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Linfoma intravascular tratado con anticuerpos monoclonales anti CD20: Descripción de un caso clínico/ Intravascular lymphoma treated with anti CD20 monoclonal antibodies: Report of one case  

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Full Text Available Abstract in english We report a 78 year old male with prostatism, that was subjected to a prostate biopsy. The pathological study showed a microvascular lymphocytic infiltration. Four months later, the patients presentd with reduced alertness, cough, dyspnea, fever and elevation of lactic dehydrogenase and erythrocyte sedimentation rate. Chest and abdominal CAT scans, bone marrow aspirate, protein electrophoresis and prostate specific antigen were normal. A re-evaluation of prostate biopsy s (more) howed an intravascular lymphoid infiltration, positive for CD45 and CD20, compatible with the diagnosis of intravascular lymphoma. Chemotherapy was started, but it was not tolerated by the patient and the response was partial. Therefore, treatment with monoclonal antibodies anti CD20 (Rituximab) was started. The tumor had a complete and prolonged (24 months) remission after the treatment

Alfaro L, Jorge; Espinoza N, Arturo; Manríquez A, María; Moyano, Leonor; González G, Néstor; Larrondo L, Milton; Figueroa M, Gastón

2004-11-01

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Linfoma intravascular tratado con anticuerpos monoclonales anti CD20: Descripción de un caso clínico Intravascular lymphoma treated with anti CD20 monoclonal antibodies: Report of one case  

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Full Text Available We report a 78 year old male with prostatism, that was subjected to a prostate biopsy. The pathological study showed a microvascular lymphocytic infiltration. Four months later, the patients presentd with reduced alertness, cough, dyspnea, fever and elevation of lactic dehydrogenase and erythrocyte sedimentation rate. Chest and abdominal CAT scans, bone marrow aspirate, protein electrophoresis and prostate specific antigen were normal. A re-evaluation of prostate biopsy showed an intravascular lymphoid infiltration, positive for CD45 and CD20, compatible with the diagnosis of intravascular lymphoma. Chemotherapy was started, but it was not tolerated by the patient and the response was partial. Therefore, treatment with monoclonal antibodies anti CD20 (Rituximab) was started. The tumor had a complete and prolonged (24 months) remission after the treatment

Jorge Alfaro L; Arturo Espinoza N; María Manríquez A; Leonor Moyano; Néstor González G; Milton Larrondo L; Gastón Figueroa M

2004-01-01

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COMPROMISO SISTÉMICO POR LINFOMA INTRAVASCULAR DE CÉLULA GRANDE COMPROMISSO SISTÉMICO POR LINFOMA INTRAVASCULAR DE CÉLULA GRANDE SYSTEMIC COMPROMISE FROM LARGE CELL INTRAVASCULAR LYMPHOMA  

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Full Text Available Se presenta el primer caso de linfoma intravascular de célula grande, una variante del linfoma de células B grandes difuso, diagnosticado en el Hospital Militar Central de Bogotá, en una mujer adulta mayor, quien consultó por un síndrome febril prolongado, pérdida de peso, síntomas constitucionales y quien veinte días antes del ingreso perdió fuerza progresiva, hasta la paraplejia. Se iniciaron estudios para descartar enfermedades neoplásicas, infecciosas y autoinmunes, pero falleció el día catorce de su hospitalización. El estudio post-mortem, realizado cinco horas después, mostró una lesión tumoral maligna de célula grande, limitada a los espacios vasculares de múltiples vísceras. Se planteó como diagnóstico una neoplasia de origen linfoide, que se confirmó posteriormente mediante pruebas inmunohistoquímicas.Apresenta-se o primeiro caso de linfoma intravascular de célula grande, uma variante do linfoma de células B grandes difuso, diagnosticado no Hospital Militar Central de Bogotá, numa mulher adulta maior, quem conferiu por uma síndrome febril prolongado, perda de peso, sintomas constitucionais e quem vinte dias antes do rendimento perdeu força progressiva, até a paraplegia. Iniciaram-se estudos para descartar doenças neoplásicas, infecciosas e auto-imunes, mas faleceu o dia quatorze de sua hospitalização. O estudo post-mortem, realizado cinco horas depois, mostrou uma lesão tumoral maligna de célula grande, limitada aos espaços vasculares de múltiples vísceras. Propôs-se como diagnóstico uma neoplasia de origem linfóide, que se confirmou posteriormente mediante provas inmunohistoquímicas.This is the first case of intravascular large cell lymphoma diagnosed at the Hospital Militar de Bogota, in an adult female who presented with chronic fever, weight loss, constitutional symptoms and progressive motor deterioration for the previous 20 days to the point of paraplegia. A work up was carried out to rule out neoplastic diseases, infections or autoimmune diseases, but she died on the fourteen hospital day. The autopsy, performed 5 hours post mortem, showed an intravascular large cell malignancy, limited to the vascular spaces of multiple organs. The lymphomatous origin was confirmed posteriorly by immunochemical tests.

JOSÉ J. ARIAS A.; LAURA ESCOBAR; MARÍA HELENA ASTORQUIZA

2008-01-01

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COMPROMISO SISTÉMICO POR LINFOMA INTRAVASCULAR DE CÉLULA GRANDE/ SYSTEMIC COMPROMISE FROM LARGE CELL INTRAVASCULAR LYMPHOMA/ COMPROMISSO SISTÉMICO POR LINFOMA INTRAVASCULAR DE CÉLULA GRANDE  

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Full Text Available Abstract in portuguese Apresenta-se o primeiro caso de linfoma intravascular de célula grande, uma variante do linfoma de células B grandes difuso, diagnosticado no Hospital Militar Central de Bogotá, numa mulher adulta maior, quem conferiu por uma síndrome febril prolongado, perda de peso, sintomas constitucionais e quem vinte dias antes do rendimento perdeu força progressiva, até a paraplegia. Iniciaram-se estudos para descartar doenças neoplásicas, infecciosas e auto-imunes, mas fale (more) ceu o dia quatorze de sua hospitalização. O estudo post-mortem, realizado cinco horas depois, mostrou uma lesão tumoral maligna de célula grande, limitada aos espaços vasculares de múltiples vísceras. Propôs-se como diagnóstico uma neoplasia de origem linfóide, que se confirmou posteriormente mediante provas inmunohistoquímicas. Abstract in spanish Se presenta el primer caso de linfoma intravascular de célula grande, una variante del linfoma de células B grandes difuso, diagnosticado en el Hospital Militar Central de Bogotá, en una mujer adulta mayor, quien consultó por un síndrome febril prolongado, pérdida de peso, síntomas constitucionales y quien veinte días antes del ingreso perdió fuerza progresiva, hasta la paraplejia. Se iniciaron estudios para descartar enfermedades neoplásicas, infecciosas y auto (more) inmunes, pero falleció el día catorce de su hospitalización. El estudio post-mortem, realizado cinco horas después, mostró una lesión tumoral maligna de célula grande, limitada a los espacios vasculares de múltiples vísceras. Se planteó como diagnóstico una neoplasia de origen linfoide, que se confirmó posteriormente mediante pruebas inmunohistoquímicas. Abstract in english This is the first case of intravascular large cell lymphoma diagnosed at the Hospital Militar de Bogota, in an adult female who presented with chronic fever, weight loss, constitutional symptoms and progressive motor deterioration for the previous 20 days to the point of paraplegia. A work up was carried out to rule out neoplastic diseases, infections or autoimmune diseases, but she died on the fourteen hospital day. The autopsy, performed 5 hours post mortem, showed an i (more) ntravascular large cell malignancy, limited to the vascular spaces of multiple organs. The lymphomatous origin was confirmed posteriorly by immunochemical tests.

ARIAS A., JOSÉ J.; ESCOBAR, LAURA; ASTORQUIZA, MARÍA HELENA

2008-07-01

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Linfoma B intravascular: comprometimento bilateral da suprarrenal em paciente adulta jovem Intravascular large B cell lymphoma: impairment of bilateral adrenal in young woman  

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Full Text Available O linfoma B intravascular de grandes células (IVLBCL) é uma doença rara caracterizada pela proliferação neoplásica de células linfoides no interior de capilares. Relatamos um caso de IVLBCL em paciente jovem do sexo feminino com comprometimento bilateral da glândula suprarrenal. O exame imuno-histoquímico confirmou o IVLBCL. A afinidade entre órgãos endócrinos e células linfoides é uma hipótese levantada para explicar a correlação verificada entre o IVLBCL e o comprometimento da glândula suprarrenal. Além disso, a associação entre o IVLBCL e a sintomatologia descrita parece refletir um padrão que poderá auxiliar em um diagnóstico mais eficaz.The Intravascular Large B-cell Lymphoma (IVLBCL) is a rare disease characterized by neoplastic proliferation of lymphoid cells within capillaries. We report a case of IVLBCL in a young female patient with bilateral involvement of the adrenal gland. Immunohistochemical examination confirmed IVLBCL. The relationship between endocrine organs and lymphoid cells is a hypothesis to explain the correlation observed between IVLBCL and the involvement of the adrenal gland. Moreover, the association between IVLBCL and the described symptomatology seems to reflect a pattern that may assist in a more effective diagnosis.

Marília Sena de Felipe; Chrystian Junqueira Alves; Rogerio Estevam Farias

2010-01-01

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Linfoma intravascular do pulmão: A propósito de um caso clínico com boa resposta à terapêutica/ Intravascular pulmonary lymphoma with good response to treatment. A case report  

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Full Text Available Abstract in portuguese O linfoma intravascular é uma forma muito rara de linfoma não Hodgkin de células grandes B. Caracteriza-se pela proliferação celular tumoral de linfócitos limitada aos pequenos vasos, particularmente nos capilares. Apresentamos o caso de uma doente de 54 anos, não fumadora, que foi admitida no nosso hospital para investigação de um quadro com quatro meses de evolução de febre, sudorese nocturna, emagrecimento não quantificado e dispneia progressiva. Ao exame o (more) bjectivo apresentava-se febril, taquicárdica e polipneica. Analiticamente, destacava-se anemia, leucocitose e LDH elevada. Gasometria arterial - FiO2 1 l/m: PaO2-63,6 mm Hg. A telerradiografia de tórax revelava infiltado intersticial difuso. Foram excluídas todas as causas de febre de origem indeterminada. O diagnóstico foi realizado por biópsia pulmonar cirúrgica e foi prescrita terapêutica citostática combinada e rituximab com boa resposta clínica. Relatamos o caso pela dificuldade diagnóstica e pela boa resposta à terapêutica. Abstract in english Intravascular lymphoma is a very rare form of large B cell non-Hodgkin?s lymphoma, characterised by the presence of lymphoma cells in the lumina of small vessels only, particulary in the capillaries. We report a 54 year-old female non-smoker, admitted to hospital for further examination of a four month long clinical condition involving high fever, night sweats, unqualified weight loss and progressive dyspnea. Patient?s temperature was 38.5 ºC, pulse 100/min and respira (more) tory 22 cycles/min. Patient?s haemoglobin was 9.4g/dL, she had leukocytosis, elevated LDH and arterial blood gas analysis with moderate hypoxaemia (FiO2 1l/m: PaO2-63.6 mm Hg). Chest X-ray revealed diffuse interstitial changes. All the possible causes of unknown origin fever were excluded. Diagnosis was made through lung biopsy and treatment with combined chemotherapy and rituximab was prescribed leading to a 48 hours clinical remission. We present this case to show how difficult this diagnosis can be and how a good response to therapy is possible.

Felizardo, M; Mendes, A C; Fernandes, A; Campos, P; Magalhães, V; Correia, I; Pignatelli, A; Ferreira, C; Sotto-Mayor, R; Almeida, A Bugalho de

2008-12-01

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High grade primary adrenal intravascular large B-cell lymphoma manifesting as Addison disease/ Linfoma intravascular de alto grado de células B grandes y origen suprarrenal que se manifiesta en forma de enfermedad de Addison  

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Full Text Available Abstract in spanish Publicamos el caso poco frecuente de un varón de 68 años de edad que debutó con insuficiencia adrenal y fue diagnosticado de linfoma de alto grado de células B grandes ubicado principalmente en las glándulas suprarrenales. Al paciente le administraron quimioterapia adicional, pero falleció 7 meses después de infección pulmonar. El linfoma intravascular debe sospecharse en los pacientes con masas suprarrenales bilaterales que presenten insuficiencia adrenal rápidamente progresiva. Abstract in english We report a rare case of a 68 aged male who presented with adrenal failure and was diagnosed of high grade large B-cell lymphoma primarily arising in the adrenal glands. The patient was administrated with additional chemotherapy but he passed away 7 months later due to infection in the lungs. Intravascular lymphoma should be suspected in patients with bilateral adrenal masses who present with rapidly progressive adrenal insufficiency.

Venizelos, J.; Tamiolakis, D.; Lambropoulou, M.; Alexiadis, G.; Petrakis, G.; Papadopoulos, N.

2007-08-01

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High grade primary adrenal intravascular large B-cell lymphoma manifesting as Addison disease Linfoma intravascular de alto grado de células B grandes y origen suprarrenal que se manifiesta en forma de enfermedad de Addison  

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Full Text Available We report a rare case of a 68 aged male who presented with adrenal failure and was diagnosed of high grade large B-cell lymphoma primarily arising in the adrenal glands. The patient was administrated with additional chemotherapy but he passed away 7 months later due to infection in the lungs. Intravascular lymphoma should be suspected in patients with bilateral adrenal masses who present with rapidly progressive adrenal insufficiency.Publicamos el caso poco frecuente de un varón de 68 años de edad que debutó con insuficiencia adrenal y fue diagnosticado de linfoma de alto grado de células B grandes ubicado principalmente en las glándulas suprarrenales. Al paciente le administraron quimioterapia adicional, pero falleció 7 meses después de infección pulmonar. El linfoma intravascular debe sospecharse en los pacientes con masas suprarrenales bilaterales que presenten insuficiencia adrenal rápidamente progresiva.

J. Venizelos; D. Tamiolakis; M. Lambropoulou; G. Alexiadis; G. Petrakis; N. Papadopoulos

2007-01-01

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Primary lymphoma of the liver treated by extended hepatectomy and chemotherapy: a case report/ Linfoma primário do fígado tratado por hepatectomia ampliada e quimioterapia: relato de caso  

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Full Text Available Abstract in portuguese O linfoma primário do fígado é uma entidade extremamente rara. Os autores relatam um caso de linfoma não-Hodgkin de células B grandes anaplásicas (positivo para CD-20 e Lambda) em um paciente do sexo masculino de 33 anos. O tumor estava localizado no lobo hepático direito e foi tratado por hepatectomia direita ampliada e quimioterapia pós-operatória com ciclofosfamida, adriamicina, vincristina e prednisone. Vinte quatro meses de seguimento o paciente encontra-se sem recidiva tumoral. Abstract in english Primary lymphoma of the liver is an extremely rare entity. A case of anaplastic large B-cell (both CD-20 and lambda positive) non-Hodgkin's lymphoma that was confined to the liver in a 33-year-old man is reported. The patient was treated with an extended right hepatectomy and combination chemotherapy: cyclophosphamide, adriamycin, vincristine, and prednisone. The patient was disease free 24 months after the procedure.

Chaib, Eleazar; Leite, Katia Ramos Moreira; Saad, Willian Abrão; Gama-Rodrigues, Joaquim

2002-09-01

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Primary lymphoma of the liver treated by extended hepatectomy and chemotherapy: a case report Linfoma primário do fígado tratado por hepatectomia ampliada e quimioterapia: relato de caso  

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Full Text Available Primary lymphoma of the liver is an extremely rare entity. A case of anaplastic large B-cell (both CD-20 and lambda positive) non-Hodgkin's lymphoma that was confined to the liver in a 33-year-old man is reported. The patient was treated with an extended right hepatectomy and combination chemotherapy: cyclophosphamide, adriamycin, vincristine, and prednisone. The patient was disease free 24 months after the procedure.O linfoma primário do fígado é uma entidade extremamente rara. Os autores relatam um caso de linfoma não-Hodgkin de células B grandes anaplásicas (positivo para CD-20 e Lambda) em um paciente do sexo masculino de 33 anos. O tumor estava localizado no lobo hepático direito e foi tratado por hepatectomia direita ampliada e quimioterapia pós-operatória com ciclofosfamida, adriamicina, vincristina e prednisone. Vinte quatro meses de seguimento o paciente encontra-se sem recidiva tumoral.

Eleazar Chaib; Katia Ramos Moreira Leite; Willian Abrão Saad; Joaquim Gama-Rodrigues

2002-01-01

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Linfoma no Hodgkin secundario a inmunosupresión por transplate renal tratado con quimioterapia  

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Full Text Available OBJETIVO: Los síndromes linfoproliferativos posterior a trasplante renal incluyen un grupo de enfermedades linfoides que por definición se presentan después del mismo en un órgano sólido o en la médula ósea y están en relación con la terapia inmunosupresora administrada. La probabilidad de desarrollar una neoplasia maligna en un receptor de trasplante renal seguido a lo largo de 17 años, es de un 14 % para cánceres no cutáneos, de un 47 % en los carcinomas de piel y un 55 % para cualquier tipo de cáncer. MÉTODO: En este trabajo se describe un caso poco común de un paciente de 40 años con insuficiencia renal crónica secundario a hipertensión arterial en hemodiálisis, quien se le realizó trasplante renal de cadáver en el 2007, presentando alteración de función renal con masa palpable en fosa ilíaca derecha, en tratamiento con inmunosupresores. RESULTADOS: El examen histopatológico de la biopsia reportó: desorden linfoproliferativo posterior a trasplante con inmunohistoquímica positivo para CD20, CD79 en células linfoides B y CD45 en células linfoides T. Estudios de extensión metástasis en mediastino concluyéndose como: linfoma no Hodgkin inmunofenotipo B CD20+ estadio IV extra nodal renal con metástasis en mediastino superior mayo/2009 IPI score alto riesgo secundario a trasplante renal. Recibió tratamiento con R-CHOP obteniéndose respuesta oncológica completa, demostrado por CT-PET, actualmente libre de enfermedad, en controles nefrológicos. CONCLUSIÓN: Se debe vigilar cualquier alteración clínica, ya que un rechazo de trasplante se puede confundir con una patología oncológica.OBJECTIVE: The posterior transplant lymph syndrome proliferative disorders include a group of renal lymphoid diseases by definition are present after a solid organ transplant or in bone marrow and are related to immunosuppressive therapy administered. The likelihood of developing a malignancy renal transplant recipient followed over the 17 years is 14 % for the non-skin cancers, 47 % in the carcinomas of the skin and 55 % for any type of cancer. METHOD: In this work we describes a rare case of a 40 year old patient with chronic renal failure secondary to arterial hypertension in hemodialysis, who underwent cadaveric renal transplant in 2007, the patient presented impaired renal function with palpable mass in right iliac fosse, in treatment with immune suppressants. RESULTS: The histopathology examination of the biopsy reported, posterior transplant with lymphoproliferative disorder with immunohistochemistry positive for CD20, CD79 on B lymphoid cells and CD45 on T lymphoid cells, the extension studies concluding that the mediastinal metastases were: Non-Hodgkin’s lymphoma immunophenotyping B extranodal CD20 + stage IV renal with metastases in the superior mediastinum IPI score May/2009 classified how secondary to high risk renal transplantation. The patient was treated with R-CHOP we obtained a oncology complete response, as demonstrated by CT-PET, and currently free of disease, in nephrology controls. CONCLUSION: It should monitor any clinical manifestation in the treatment of this kind of patients and served as a rejection of transplant can be confused with metastatic brain tumor.

Ámbar Guzmán; Hugo Ruíz; Oneida Parra; Carmen Umbría; Angelo Garofalo; Luisa González; Karen Kubicek

2011-01-01

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Linfoma no Hodgkin secundario a inmunosupresión por transplate renal tratado con quimioterapia  

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Full Text Available Abstract in spanish OBJETIVO: Los síndromes linfoproliferativos posterior a trasplante renal incluyen un grupo de enfermedades linfoides que por definición se presentan después del mismo en un órgano sólido o en la médula ósea y están en relación con la terapia inmunosupresora administrada. La probabilidad de desarrollar una neoplasia maligna en un receptor de trasplante renal seguido a lo largo de 17 años, es de un 14 % para cánceres no cutáneos, de un 47 % en los carcinomas de (more) piel y un 55 % para cualquier tipo de cáncer. MÉTODO: En este trabajo se describe un caso poco común de un paciente de 40 años con insuficiencia renal crónica secundario a hipertensión arterial en hemodiálisis, quien se le realizó trasplante renal de cadáver en el 2007, presentando alteración de función renal con masa palpable en fosa ilíaca derecha, en tratamiento con inmunosupresores. RESULTADOS: El examen histopatológico de la biopsia reportó: desorden linfoproliferativo posterior a trasplante con inmunohistoquímica positivo para CD20, CD79 en células linfoides B y CD45 en células linfoides T. Estudios de extensión metástasis en mediastino concluyéndose como: linfoma no Hodgkin inmunofenotipo B CD20+ estadio IV extra nodal renal con metástasis en mediastino superior mayo/2009 IPI score alto riesgo secundario a trasplante renal. Recibió tratamiento con R-CHOP obteniéndose respuesta oncológica completa, demostrado por CT-PET, actualmente libre de enfermedad, en controles nefrológicos. CONCLUSIÓN: Se debe vigilar cualquier alteración clínica, ya que un rechazo de trasplante se puede confundir con una patología oncológica. Abstract in english OBJECTIVE: The posterior transplant lymph syndrome proliferative disorders include a group of renal lymphoid diseases by definition are present after a solid organ transplant or in bone marrow and are related to immunosuppressive therapy administered. The likelihood of developing a malignancy renal transplant recipient followed over the 17 years is 14 % for the non-skin cancers, 47 % in the carcinomas of the skin and 55 % for any type of cancer. METHOD: In this work we de (more) scribes a rare case of a 40 year old patient with chronic renal failure secondary to arterial hypertension in hemodialysis, who underwent cadaveric renal transplant in 2007, the patient presented impaired renal function with palpable mass in right iliac fosse, in treatment with immune suppressants. RESULTS: The histopathology examination of the biopsy reported, posterior transplant with lymphoproliferative disorder with immunohistochemistry positive for CD20, CD79 on B lymphoid cells and CD45 on T lymphoid cells, the extension studies concluding that the mediastinal metastases were: Non-Hodgkin?s lymphoma immunophenotyping B extranodal CD20 + stage IV renal with metastases in the superior mediastinum IPI score May/2009 classified how secondary to high risk renal transplantation. The patient was treated with R-CHOP we obtained a oncology complete response, as demonstrated by CT-PET, and currently free of disease, in nephrology controls. CONCLUSION: It should monitor any clinical manifestation in the treatment of this kind of patients and served as a rejection of transplant can be confused with metastatic brain tumor.

Guzmán, Ámbar; Ruíz, Hugo; Parra, Oneida; Umbría, Carmen; Garofalo, Angelo; González, Luisa; Kubicek, Karen

2011-03-01

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Advanced Hodgkin's lymphoma: results in 216 patients treated with ABVD in Brazil Linfoma de Hodgkin em estádio avançado: resultados do tratamento em 216 pacientes tratados com ABVD no Brasil  

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Full Text Available The outcome of Hodgkin's lymphoma (HL) has markedly improved over the last few decades, placing HL among the human cancers with highest cure rates. However, data about treatment outcomes in developing countries are scarce. From 1996 to 2005, 370 consecutive patients with HL treated in three public institutions in Rio de Janeiro were identified. A total of 216 patients who presented with advanced stage (IIB-IV) HL were selected for the present analysis. Patients with advanced disease were treated with ABVD, complemented or not by radiation therapy. The median follow-up time of survivors was 6.3 years (1-11.8). Fifteen patients died during first-line treatment. The complete remission rate was 80%. The 5-year progression-free survival (PFS) and the 5-year overall survival (OS) probabilities were 69% and 83%, respectively. The 5-year PFS in low-risk and high-risk patients were 81% and 62% (p=0.003), respectively. The 5-year OS in low-risk and high-risk International Prognostic Score patients were 89% and 78% (p=0.02), respectively. The present study provides a representative estimate of current treatment results for advanced HL in public institutions in an urban area in Brazil. It is clear that full treatment can be given to most patients, although those with very low socio-economic status might require special attention and support. Since Brazil is a large country, with substantial interregional heterogeneity, a nationwide registry of HL patients is currently being implemented.Os resultados do tratamento do linfoma de Hodgkin (LH) melhoraram substancialmente ao longo das últimas décadas e tornaram o LH uma das neoplasias humanas com maior chance de cura. Entretanto, os dados sobre tratamento em países em desenvolvimento são escassos. Entre 1996 e 2005, 370 pacientes consecutivos com LH tratados em três instituições públicas no Rio de Janeiro foram identificados. Destes, 216 em estádio avançado (IIB-IV) foram selecionados para esta análise. Os pacientes foram tratados com o protocolo ABVD (doxorrubicina, bleomicina, vinblastina e dacarbazina). A mediana do tempo de seguimento dos sobreviventes foi de 6,3 anos (1-11,8). Quinze pacientes morreram durante o tratamento de primeira linha. A probabilidade de sobrevida livre de progressão (SLP) em cinco anos e a probabilidade de sobrevida global (SG) em cinco anos foram de 69% e 83%, respectivamente. A SLP nos grupos de baixo risco e de alto risco, de acordo com o "International Prognostic Score", foi de 81% e 62% (p=0,003), respectivamente. A SG em cinco anos nos grupos de baixo risco e de alto risco foi de 89% e 78% (p=0,02), respectivamente. O presente estudo apresenta uma estimativa representativa dos resultados atuais do tratamento do LH avançado em instituições públicas no Brasil. Fica claro que o tratamento completo pode ser oferecido à grande maioria dos pacientes, embora aqueles com baixo status socioeconômico possam exigir atenção especial. Em vista das dimensões continentais do Brasil, com substancial heterogeneidade interregional, um registro nacional de pacientes com LH está sendo implementado.

Luciana Britto; Irene Biasoli; Denize Azambuja; Adriana Scheliga; Andrea Soares; Munya Gandour; Tatiana Hofmeister; Thiago Vieites; Cristiane Milito; Wolmar Pulcheri; José Carlos Morais; Nelson Spector

2010-01-01

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Advanced Hodgkin's lymphoma: results in 216 patients treated with ABVD in Brazil/ Linfoma de Hodgkin em estádio avançado: resultados do tratamento em 216 pacientes tratados com ABVD no Brasil  

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Full Text Available Abstract in portuguese Os resultados do tratamento do linfoma de Hodgkin (LH) melhoraram substancialmente ao longo das últimas décadas e tornaram o LH uma das neoplasias humanas com maior chance de cura. Entretanto, os dados sobre tratamento em países em desenvolvimento são escassos. Entre 1996 e 2005, 370 pacientes consecutivos com LH tratados em três instituições públicas no Rio de Janeiro foram identificados. Destes, 216 em estádio avançado (IIB-IV) foram selecionados para esta an? (more) ?lise. Os pacientes foram tratados com o protocolo ABVD (doxorrubicina, bleomicina, vinblastina e dacarbazina). A mediana do tempo de seguimento dos sobreviventes foi de 6,3 anos (1-11,8). Quinze pacientes morreram durante o tratamento de primeira linha. A probabilidade de sobrevida livre de progressão (SLP) em cinco anos e a probabilidade de sobrevida global (SG) em cinco anos foram de 69% e 83%, respectivamente. A SLP nos grupos de baixo risco e de alto risco, de acordo com o "International Prognostic Score", foi de 81% e 62% (p=0,003), respectivamente. A SG em cinco anos nos grupos de baixo risco e de alto risco foi de 89% e 78% (p=0,02), respectivamente. O presente estudo apresenta uma estimativa representativa dos resultados atuais do tratamento do LH avançado em instituições públicas no Brasil. Fica claro que o tratamento completo pode ser oferecido à grande maioria dos pacientes, embora aqueles com baixo status socioeconômico possam exigir atenção especial. Em vista das dimensões continentais do Brasil, com substancial heterogeneidade interregional, um registro nacional de pacientes com LH está sendo implementado. Abstract in english The outcome of Hodgkin's lymphoma (HL) has markedly improved over the last few decades, placing HL among the human cancers with highest cure rates. However, data about treatment outcomes in developing countries are scarce. From 1996 to 2005, 370 consecutive patients with HL treated in three public institutions in Rio de Janeiro were identified. A total of 216 patients who presented with advanced stage (IIB-IV) HL were selected for the present analysis. Patients with advan (more) ced disease were treated with ABVD, complemented or not by radiation therapy. The median follow-up time of survivors was 6.3 years (1-11.8). Fifteen patients died during first-line treatment. The complete remission rate was 80%. The 5-year progression-free survival (PFS) and the 5-year overall survival (OS) probabilities were 69% and 83%, respectively. The 5-year PFS in low-risk and high-risk patients were 81% and 62% (p=0.003), respectively. The 5-year OS in low-risk and high-risk International Prognostic Score patients were 89% and 78% (p=0.02), respectively. The present study provides a representative estimate of current treatment results for advanced HL in public institutions in an urban area in Brazil. It is clear that full treatment can be given to most patients, although those with very low socio-economic status might require special attention and support. Since Brazil is a large country, with substantial interregional heterogeneity, a nationwide registry of HL patients is currently being implemented.

Britto, Luciana; Biasoli, Irene; Azambuja, Denize; Scheliga, Adriana; Soares, Andrea; Gandour, Munya; Hofmeister, Tatiana; Vieites, Thiago; Milito, Cristiane; Pulcheri, Wolmar; Morais, José Carlos; Spector, Nelson

2010-01-01

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Linfoma no Hodgkin  

Science.gov (United States)

Información acerca del linfoma no Hodgkin, lo cual incluye temas como tratamiento, prevención, genética, causas, exámenes selectivos de detección, estudios clínicos y estadísticas del Instituto Nacional del Cáncer.

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LINFOMA PRIMARIO DE LA MAMA  

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Full Text Available Se presenta un caso clínico de Linfoma primario de la mama, patología de muy baja ocurrencia (0,1% de los cánceres de mama), en una mujer de 71 años, diagnosticado y tratado en la Unidad de Patología Mamaria del Servicio de Obstetricia y Ginecología del Hospital Clínico San Borja Arriarán en enero del 2002A case report of Primary Lymphoma of the Breast, a very unusual breast pathology, that occur in approximately 0.1% of all breast cancer, is presented because of an outstanding clinical case, in a 71 years old woman, diagnosed and managed at the Breast Pathology Unit of the Gynecology Service of "San Borja Arriarán Hospital" in January of 2002

Jaime Letzkus B.; Octavio Peralta M.; Galina Ivanova; Jorge Gamboa G.; Alejandro Belmar S.; Cesar del Castillo S.; Mónica Campos M.; Paulina Peñaloza; Valeria Cornejo C.; Eugenio Vinés V.

2002-01-01

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Estudo prospectivo e randomizado de pacientes tratados com e sem stents revestidos com carbeto de silício amorfo para a prevenção da reestenose coronariana. Avaliação ultra-sonográfica/ Randomized intravascular ultrasound comparison between endoprostheses with and without amorphous silicon-carbide  

Scientific Electronic Library Online (English)

Full Text Available Abstract in portuguese OBJETIVO: A reestenose intra-stent é a maior limitação das intervenções coronárias percutâneas. O carbeto de silício amorfo (SiC-a), substância antitrombótica e antiinflamatória capaz de reduzir a deposição de fibrina, plaquetas e leucócitos sobre o stent, apresenta potencial de prevenir a hiperplasia neo-intimal e a reestenose. MÉTODOS: Estudo prospectivo, randomizado e tipo rótulo aberto comparando pacientes com doença coronariana tratados com e sem ste (more) nts revestidos com o SiC-a, utilizando a angiografia quantitativa e o ultra-som intracoronário. Foram incluídos 100 pacientes (50 em cada grupo) a fim de mensurar o volume de hiperplasia neo-intimal intra-stent/extremidades. Como os stents comparados apresentavam extensões diferentes, o volume de hiperplasia foi analisado em valores absolutos (por paciente) e relativos (por milímetro de extensão do stent). Avaliaram-se ainda os eventos cardíacos maiores e os resultados da angiografia quantitativa. RESULTADOS: Os grupos apresentaram características de base semelhantes. Todos os pacientes foram tratados com sucesso. No 6° mês de evolução foram reestudados 94% dos casos dos dois grupos, obtendo-se ultra-som em 92%. O volume de hiperplasia neo-intimal absoluto foi significativamente maior nos tratados com os stents revestidos (51.2 DP 18.8 mm³ vs 41.9 DP 16.4 mm³; p=0.014), porém o relativo foi semelhante (2.9 DP 1.0 mm³/mm stent vs 2.5 DP 0.9 mm³/mm stent; p=0.108). A obstrução volumétrica da luz também foi similar (36.4 DP 11.1% vs 37.9 DP 10.9%; p=0.505). O diâmetro mínimo da luz (1.9 DP 0.7 mm vs 1.8 DO 0.6 mm; p=0.552), a reestenose (19.1% vs 17%; p>0.999) e a revascularização do vaso-alvo (16% vs 14%; p>0.999) não diferiram. CONCLUSÃO: Os stents revestidos apresentaram resultados clínicos, angiográficos e ultra-sonográficos similares aos controles. Abstract in english OBJECTIVE: In-stent restenosis remains a major limitation following coronary stent implantation. Amorphous silicon-carbide (a-SiC) coating has been shown to improve stent biocompatibility, therefore, reducing local inflammation and thrombus generation. Due to the latter, a-SiC coating might have an impact on the prevention of neointimal hyperplasia (NIH) and restenosis. METHODS: This prospective, randomized, open-label trial compared a-SiC-coated (group A) versus uncoated (more) (group B) stent implantation in de novo lesions. We included 100 patients (50 patients in each group) and the primary end-point was in-stent volume of NIH measured by intravascular ultrasound. RESULTS: All patients underwent successful stent deployment. Although absolute NIH volume was greater in A (51.2 mm³ SD 18.8 mm³ versus 41.9 mm³ SD 16.4 mm³; P = 0.014), relative (divided per mm of stent length) NIH volume was similar (2.9 mm³/mm stent SD 1.0 mm³/mm stent versus 2.5 mm³/mm stent SD 0.9 mm³/mm stent; P = 0.108). Late loss, restenosis, and major adverse cardiac events (MACE) were similar. CONCLUSION: A-SiC-coated stents did not reduce either NIH or MACE at long-term follow-up.

Tanajura, Luiz Fernando Leite; Sousa, J. Eduardo M. R.; Sousa, Amanda G. M. R.; Abizaid, Alexandre; Paula, João Eduardo T.; Albertal, Mariano; Feres, Fausto; Mattos, Luiz Alberto P.; Staico, Rodolfo; Pinto, Ibraim M.F.

2004-12-01

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Linfoma renal primario/ Primary renal lymphoma  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish OBJETIVO: Presentar un caso de linfoma renal primario. MATERIAL Y MÉTODOS: Estudiamos el caso clínico de un paciente en el que se descubrió una masa renal, con el diagnóstico anatomopatológico de linfoma renal primario. RESULTADOS: Se trata de un paciente de 78 años de edad que acudió a nuestra consulta por dolor en fosa renal derecha. Al realizar varias pruebas complementarias se llegó al diagnóstico de masa renal derecha, cuyo estudio anatomopatológico tras pu (more) nción-biopsia reveló un linfoma difuso de células B, siendo tratado con ciclos de quimioterapia sistémica según la pauta CHOP. CONCLUSIONES: El linfoma renal primario es una entidad rara y cuestionada por muchos autores. En la práctica clínica se presenta de modo similar al resto de tumores renales, por lo que su diagnóstico debe ser histológico. El tratamiento de elección es la quimioterapia sistémica con la combinación CHOP. Abstract in english OBJECTIVE: To describe a case of primary renal lymphoma. MATERIAL AND METHODS: We presents a patient with a right renal mass which histological analysis revealed a non-Hodgkin Lymphoma. RESULTS: A 78-year-old male patient with right flank pain mass was referred to our Service. He was diagnosed of renal mass by imaging studies. Inmunohistochemical investigations revealed a B-cell-type lymphoma. He received combination chemotherapy with CHOP. CONCLUSIONS: Primary renal lymp (more) homa is a rare disease whose existence has been questioned, because the kidney does not normally contain lymphoid tissue. Its clinical presentation is like any other renal tumor and its definitive diagnosis is by histology. Elective treatment is chemotherapy (CHOP).

Torrecilla García-Ripoll, J.R.; Pascual Samaniego, M.; Martín Blanco, S.; Rivera Ferro, J.; Peral Martínez, J.I.; Fernández del Busto, E.

2003-08-01

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Linfomas orbitarios: Presentación de nueve casos Orbital lymphomas: Presentation of nine cases  

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Full Text Available Objetivo: Describir nueve casos de linfomas orbitarios. Métodos: Revisión de historias clínicas de nueve pacientes diagnosticados de linfoma orbitario y consulta de la bibliografía relacionada con esta patología. Resultados: Se presenta una serie compuesta por cinco mujeres y cuatro varones con linfoma en la región orbitaria. En nuestros casos, la mayoría de los pacientes presentaron linfoma extraorbitario concurrente en el momento en el que el proceso orbitario fue detectado por primera vez (siete de los nueve pacientes). Tres de los pacientes presentaron linfoma MALT, dos linfomas foliculares, dos linfomas no Hodgkin de células B grandes, un linfoma de células B de bajo grado y un linfoma de células del manto. Ocho pacientes se mantienen vivos y uno ha fallecido a consecuencia de su linfoma en el momento de escribir este artículo. Conclusiones: Se ha observado un incremento de la incidencia de los linfomas no Hodgkin orbitarios durante las últimas tres décadas. El tipo más común en la región orbitaria es el linfoma MALT. La forma de presentación clínica que encontramos en nuestra serie es similar a la que se presenta en otros estudios. Dado que los linfomas son los tumores malignos más frecuentes en la órbita, habitualmente tienen también localización extraorbitaria, y pueden ser tratados con éxito en muchos casos, es importante que el oftalmólogo tenga presente esta patología.Purpose: To report nine cases of orbital lymphomas. Methods: We reviewed the clinical records of nine patients diagnosed with orbital lymphoma and performed a literature search related to this condition. Results: We present a series of five women and four males with orbital lymphoma involving the orbital region. In our cases, most patients presented concurrent extraorbital lymphoma when the orbital disease was first noticed (seven out of nine patients). We found three MALT lymphomas, two follicular lymphomas, two non-Hodgkin large B cell lymphomas, one low grade B cell lymphoma, and one mantle cell lymphoma. Eight patients were alive and one had died as a consequence of his lymphoma at the time this report was written. Conclusions: An increase in the incidence of non-Hodgkin orbital lymphomas has been observed over the last three decades. The most common type in the orbital region is the MALT lymphoma. The clinical features observed in our series are similar to those reported in the literature. Since lymphomas are the most frequent malignant tumours in the orbit, usually with extraorbital involvement, and can be successfully treated in many cases, it is important for the ophthalmologist to be aware of this condition.

C. Rey-Porca; M. Pérez-Encinas; F. González

2008-01-01

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Linfoma no Hodgkin primario de esófago: Reporte de un caso  

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Full Text Available Abstract in spanish El Linfoma esofágico primario es un tumor muy raro, representa menos del 1% de los tumores esofágicos. Se reporta el caso un paciente con linfoma no Hodgkin localizado en esófago medio e inferior, que consulta por disfagia, siendo diagnosticado y tratado exitosamente con quimioterapia, con sobrevida de 12 meses, hasta la actualidad asintomático y sin evidencia de tumor. Abstract in english SUMMARY Primary esophageal lymphoma is a very rare tumor; represents less than 1 % of all esophageal tumors. We report a case of a patient with no-Hodgkin lymphoma involving the medial and lower esophagus, presenting with dysphagia, he was treated successfully with chemotherapy, with an over all survival of 12 months. He is at the moment, asymptomatic and without evidence of tumor.

Martín, P; Chiquillo, A; Peraza, S; Castro, D; Silva, O; Vivas, J; Calderón, M

2006-12-01

 
 
 
 
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Linfoma de Burkitt/ Burkitt lymphoma  

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Full Text Available Abstract in spanish El linfoma de Burkitt es un tipo de linfoma no Hodgkin, no frecuente en Cuba, pues es endémico de África Central. Diagnosticar uno en nuestro país siempre es significativo, por lo que conocerlo es importante. Abstract in english The Burkitt lymphoma is a type of non-Hodgkin lymphoma infrequent in Cuba since it is endemic of Central Africa. The diagnosis of one in our country always is significant, thus it is important to know it.

Sierra Arego, Fernando; López Rodríguez, Carlos Michel

2012-03-01

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Linfoma de Burkitt Burkitt lymphoma  

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Full Text Available El linfoma de Burkitt es un tipo de linfoma no Hodgkin, no frecuente en Cuba, pues es endémico de África Central. Diagnosticar uno en nuestro país siempre es significativo, por lo que conocerlo es importante.The Burkitt lymphoma is a type of non-Hodgkin lymphoma infrequent in Cuba since it is endemic of Central Africa. The diagnosis of one in our country always is significant, thus it is important to know it.

Fernando Sierra Arego; Carlos Michel López Rodríguez

2012-01-01

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Primary Non-Hodgkins lymphoma of the parotid gland Linfomas malignos primários nas glandulas salivares  

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Full Text Available Primary malignant lymphomas in the salivary glands are relatively rare. Clinical presentation is not characteristic and the disease is often overlooked resulting in diagnosis and treatment delays. AIM: To stress the importance of the diagnostic process and combined management, we present a series of eight patients with malignant lymphoma of the parotid who were diagnosed only after surgery and managed with radiation and chemotherapy. METHODS: Retrospective series of patients with primary malignant lymphoma of the parotid gland managed with radiotherapy and diagnostic surgical partial resection. RESULTS: After treatment completion we achieved a loco-regional control rate of 87.5%. Toxicity was charted according to the Common Toxicity Criteria and it was seen in six patients (75%). Six patients are still alive without evidence of recurrent disease in their last follow-up. CONCLUSION: Our study confirms that primary early stage Non-Hodgkin Lymphoma of the parotid gland is a disease with an excellent prognosis and a good local control rate, with minimal morbidity.Linfomas primários das glândulas salivares são relativamente raros. Sua apresentação clínica não écaracterística e, frequentemente, a doença passa despercebida, resultando em atrasos no diagnóstico e tratamento. OBJETIVO: Enfatizar a importância do diagnóstico e tratamento combinado. Apresentamos uma casuística de oito pacientes com linfoma maligno da parótida, que foram diagnosticados somente após a cirurgia e tratados com radio e quimioterapia. MÉTODOS: Estudo retrospectivo de pacientes com linfoma maligno primário da glândula parótida, tratados com radioterapia e ressecção cirúrgica parcial diagnóstica. RESULTADOS: Após a conclusão do tratamento, atingimos uma taxa de controle loco-regional de 87,5%. A toxicidade foi classificada de acordo com os Critérios Comuns de Toxicidade e afetou seis pacientes (75%). Seis pacientes ainda estão vivos, sem evidência de doença na mais recente consulta de acompanhamento. CONCLUSÃO: Nosso estudo confirma que o Linfoma primário Não-Hodgkin em estágios iniciais da glândula parótida é uma doença com excelente prognóstico e boa taxa de controle local, com mínima morbidade.

Francesco Dispenza; Giuseppe Cicero; Gianluca Mortellaro; Donatella Marchese; Gautham Kulamarva; Carlo Dispenza

2011-01-01

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Linfoma MALT en diferentes localizaciones MALT lymphoma in different locations  

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Full Text Available Se describen 3 casos de pacientes con linfoma MALT, diagnosticados, tratados y seguidos en la consulta de hematología del Hospital Provincial Docente Clinicoquirúrgico "Saturnino Lora" de Santiago de Cuba, a la cual fueron remitidos por gastroenterólogos, otorrinolaringólogos y maxilofaciales de la mencionada institución. Uno de los afectados presentaba una masa tumoral gástrica y en nasofaringe, aparecida en diferentes momentos; otro un tumor linfoide en el paladar duro, que recurrió en ganglios infradiafragmáticos; y un tercero un nódulo linfoide en la glándula salival parótida unilateral, con recidiva en ganglios regionales después de haber sido extirpado. Todos experimentaron una buena respuesta clínica al inicio del tratamiento convencional, pero en 2 de ellos se confirmaron reapariciones no locales del proceso morboso.Three cases of patients with MALT lymphoma are described, who were diagnosed, treated and followed up at the hematology department of "Saturnino Lora" Teaching Provincial Hospital in Santiago de Cuba, to which they were referred by gastroenterologists, otolaryngologists and maxillofacial specialists of that institution. One of those patients presented with a nasopharyngeal and gastric mass, which appeared at different times; another patient had lymphoid tumor of the hard palate, which recurred in infradiaphragmatic lymph nodes; and a third one had a lymphoid node in the unilateral salivary parotid gland with recurrence in regional nodes after having been removed. All experienced a good clinical response at the beginning of conventional treatment, but in 2 of them non-local recurrences of the disease process were confirmed.

Ana Dolores Izquierdo Calzado; Juan Carlos Espinosa Expósito; José Jardón Caballero; Jesús Díaz Fondén; Frida Yarina González Núñez

2012-01-01

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Linfoma MALT en diferentes localizaciones/ MALT lymphoma in different locations  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Se describen 3 casos de pacientes con linfoma MALT, diagnosticados, tratados y seguidos en la consulta de hematología del Hospital Provincial Docente Clinicoquirúrgico "Saturnino Lora" de Santiago de Cuba, a la cual fueron remitidos por gastroenterólogos, otorrinolaringólogos y maxilofaciales de la mencionada institución. Uno de los afectados presentaba una masa tumoral gástrica y en nasofaringe, aparecida en diferentes momentos; otro un tumor linfoide en el paladar (more) duro, que recurrió en ganglios infradiafragmáticos; y un tercero un nódulo linfoide en la glándula salival parótida unilateral, con recidiva en ganglios regionales después de haber sido extirpado. Todos experimentaron una buena respuesta clínica al inicio del tratamiento convencional, pero en 2 de ellos se confirmaron reapariciones no locales del proceso morboso. Abstract in english Three cases of patients with MALT lymphoma are described, who were diagnosed, treated and followed up at the hematology department of "Saturnino Lora" Teaching Provincial Hospital in Santiago de Cuba, to which they were referred by gastroenterologists, otolaryngologists and maxillofacial specialists of that institution. One of those patients presented with a nasopharyngeal and gastric mass, which appeared at different times; another patient had lymphoid tumor of the hard (more) palate, which recurred in infradiaphragmatic lymph nodes; and a third one had a lymphoid node in the unilateral salivary parotid gland with recurrence in regional nodes after having been removed. All experienced a good clinical response at the beginning of conventional treatment, but in 2 of them non-local recurrences of the disease process were confirmed.

Izquierdo Calzado, Ana Dolores; Espinosa Expósito, Juan Carlos; Jardón Caballero, José; Díaz Fondén, Jesús; González Núñez, Frida Yarina

2012-03-01

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Linfoma não Hodgkin simulando hanseníase virchowiana  

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Full Text Available Os autores relatam caso de linfoma não Hodgkin em paciente do sexo feminino, de 28 anos, ressaltando o diagnóstico diferencial com formas multibacilares de hanseníase. Além de achados clínicos passíveis de confusão, a histologia mostrava, de modo não usual, infiltrado inflamatório mononuclear perineural e perianexial.

Rocha Vanessa Barreto; Carvalho Saôny Victor de; Araújo Marcelo Grossi; Guedes Antônio Carlos Martins

2003-01-01

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Primary Non-Hodgkins lymphoma of the parotid gland/ Linfomas malignos primários nas glandulas salivares  

Scientific Electronic Library Online (English)

Full Text Available Abstract in portuguese Linfomas primários das glândulas salivares são relativamente raros. Sua apresentação clínica não écaracterística e, frequentemente, a doença passa despercebida, resultando em atrasos no diagnóstico e tratamento. OBJETIVO: Enfatizar a importância do diagnóstico e tratamento combinado. Apresentamos uma casuística de oito pacientes com linfoma maligno da parótida, que foram diagnosticados somente após a cirurgia e tratados com radio e quimioterapia. MÉTODOS: (more) Estudo retrospectivo de pacientes com linfoma maligno primário da glândula parótida, tratados com radioterapia e ressecção cirúrgica parcial diagnóstica. RESULTADOS: Após a conclusão do tratamento, atingimos uma taxa de controle loco-regional de 87,5%. A toxicidade foi classificada de acordo com os Critérios Comuns de Toxicidade e afetou seis pacientes (75%). Seis pacientes ainda estão vivos, sem evidência de doença na mais recente consulta de acompanhamento. CONCLUSÃO: Nosso estudo confirma que o Linfoma primário Não-Hodgkin em estágios iniciais da glândula parótida é uma doença com excelente prognóstico e boa taxa de controle local, com mínima morbidade. Abstract in english Primary malignant lymphomas in the salivary glands are relatively rare. Clinical presentation is not characteristic and the disease is often overlooked resulting in diagnosis and treatment delays. AIM: To stress the importance of the diagnostic process and combined management, we present a series of eight patients with malignant lymphoma of the parotid who were diagnosed only after surgery and managed with radiation and chemotherapy. METHODS: Retrospective series of patie (more) nts with primary malignant lymphoma of the parotid gland managed with radiotherapy and diagnostic surgical partial resection. RESULTS: After treatment completion we achieved a loco-regional control rate of 87.5%. Toxicity was charted according to the Common Toxicity Criteria and it was seen in six patients (75%). Six patients are still alive without evidence of recurrent disease in their last follow-up. CONCLUSION: Our study confirms that primary early stage Non-Hodgkin Lymphoma of the parotid gland is a disease with an excellent prognosis and a good local control rate, with minimal morbidity.

Dispenza, Francesco; Cicero, Giuseppe; Mortellaro, Gianluca; Marchese, Donatella; Kulamarva, Gautham; Dispenza, Carlo

2011-10-01

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Linfoma hepático primario: Evolución favorable con quimioterapia combinada con rituximab Primary hepatic lymphoma: favorable outcome with chemotherapy plus rituximab  

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Full Text Available Comunicamos el caso de una paciente con un linfoma hepático primario tratado con éxito con quimioterapia combinada con rituximab. Utilizando los "encabezamientos estándar para búsquedas bibliográficas informatizadas" (Medical Subject Heading) revisamos los casos publicados hasta la fecha de esta infrecuente entidad.This article describes the case of a patient with a non-Hodgkin primary hepatic lymphoma who was successfully treated with chemotherapy combined with rituximab. Using the Medical Subject Headings the published reports of this rare entity were reviewed.

I. Serrano-Navarro; J. F. Rodríguez-López; R. Navas-Espejo; M. A. Pérez-Jacoiste; M. A. Martínez-González; C. Grande; S. Prieto

2008-01-01

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Linfoma hepático primario: Evolución favorable con quimioterapia combinada con rituximab/ Primary hepatic lymphoma: favorable outcome with chemotherapy plus rituximab  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Comunicamos el caso de una paciente con un linfoma hepático primario tratado con éxito con quimioterapia combinada con rituximab. Utilizando los "encabezamientos estándar para búsquedas bibliográficas informatizadas" (Medical Subject Heading) revisamos los casos publicados hasta la fecha de esta infrecuente entidad. Abstract in english This article describes the case of a patient with a non-Hodgkin primary hepatic lymphoma who was successfully treated with chemotherapy combined with rituximab. Using the Medical Subject Headings the published reports of this rare entity were reviewed.

Serrano-Navarro, I.; Rodríguez-López, J. F.; Navas-Espejo, R.; Pérez-Jacoiste, M. A.; Martínez-González, M. A.; Grande, C.; Prieto, S.

2008-11-01

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[Intravascular vegetating hemangioendothelioma  

UK PubMed Central (United Kingdom)

In 1928, P. Masson described in hemorrhoids a peculiar lesions which he called "intravascular vegetating hemangioendothelioma". The possibility of cutaneous location of this lesion was demonstrated only in 1967. Rare if isolated, the intravascular vegetating hemangioendothelioma is often associated with other vascular lesions such as polyps, hemorrhoids, etc. Always benign, this tumor may be misdiagnosed as an angiosarcoma by inexperienced pathologists. In this article, three additional cases are described, the histological differences with an angiosarcoma are stressed and the pathogenesis of this lesion is discussed.

Civatte J; Castro G; Chemaly P; Fois C

1986-01-01

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LINFOMA NO HODGKIN PRIMARIO DE LA MAMA  

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Full Text Available El linfoma no Hodgkin primario de la mama es una patología poco frecuente, constituye menos del 0,5% de todos los tumores mamarios malignos. Debido a que carecen de características propias, tanto clínicas, mamográficas y ultrasonográficas, resulta muy difícil establecer el diagnóstico preoperatorio, confundiéndose con el carcinoma mamario, incluso en el análisis histológico contemporáneo. Presentamos el caso de un linfoma no Hodgkin primario de la mama en una paciente de 57 añosPrimary non-Hodgkin lymphoma of the breast is a rare entity. They represent less than 0.5% of all breast cancer malignancies. No features at clinical presentation distinguish patients with lymphoma from those with carcinoma of the breast. There are both mammographic and sonographic difficulties to establish the preoperative diagnosis. Contemporary frozen sections can be mistaken with breast carcinoma. In this article we present a case of a primary non-Hodgkin lymphoma of the breast in a 57 years old women

Mario Pardo G; Nelson Burgos S

2003-01-01

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Mucormicosis yeyunal en paciente con linfoma de Hodgkin Jejunal mucormycosis in a patient with Hodgkin's lymphoma  

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Full Text Available Comunicamos un caso de mucormicosis intestinal en un hombre de 46 años de edad, diagnosticado de enfermedad de Hodgkin clásica, estadio IV-B. Durante la primera fase de la quimioterapia, sufrió una hemorragia digestiva masiva secundaria a una úlcera yeyunal por zigomicosis tipo mucor, diagnosticada por biopsia endoscópica. El paciente fue tratado con antifúngicos y resección quirúrgica del intestino afectado. En la cirugía, se apreció una doble perforación yeyunal cubierta. El estudio anatomopatológico de la pieza confirmó el diagnóstico previo. Tras un año de seguimiento, el paciente está recuperado y su linfoma de Hodgkin en remisión completa. Tras una extensa revisión de la literatura, según nuestro conocimiento, este es el segundo caso publicado en la literatura de mucormicosis intestinal en un paciente con linfoma de Hodgkin.We report a case of intestinal mucormycosis in a 46-year-old male diagnosed with classical Hodgkin's disease, IV-B stage. During the first phase of chemotherapy he had a massive digestive bleeding event secondary to a jejunal ulcer, and zygomicosis mucor-type was diagnosed by endoscopic biopsy. The patient was treated with antifungal drugs and surgical resection of the intestine involved. At surgery a double covered perforation of the jejunum was seen. Pathological examination confirmed the previous diagnosis. After one year of follow-up the patient is doing well, and his lymphoma is on remission. To our best knowledge this is the second case of intestinal mucormycosis in a patient with Hodgkin's lymphoma reported in the medical literature.

B. Madrigal; J. J. Arenal; A. Torres; M. J. Peñarrubia; A. Vara; M. Ruiz; A. Hernández; P. Enríquez

2008-01-01

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Linfoma primario de cavidades/ Primary effusion lymphoma  

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Full Text Available Abstract in spanish El linfoma primario de cavidades es un linfoma no Hodgkin de fenotipo B raro, de alto grado, asociado con el virus herpes humano 8 (VHH-8), y la mayoría de los casos se dan en el seno de una infección por VIH (SIDA). El pronóstico es pobre, con una mediana de supervivencia menor a los 6 meses. Presentamos el caso de un varón de 65 años, con una hepatopatía crónica de origen incierto, anemia hemolítica crónica y ascitis. La biopsia del peritoneo evidenció un linfoma primario de cavidades. El paciente falleció dos meses después. Abstract in english Primary effusion lymphoma is a rare high-grade B-cell non-Hodgkin's lymphoma associated with human herpesvirus 8 (HHV-8) infection, and is mostly observed in the course of HIV infection (AIDS). The prognosis is poor, with reported median survival time shorter than 6 months. We present a case of a 65-year-old man, with prior unknown origin chronic hepatopathy, chronic hemolytic anaemia, and ascitis. El biopsy of peritoneum showed a primary effusion lymphoma. The patient died two month later.

Khosravi Shahi, P.; Sabin Domínguez, P.; Pérez Manga, G.

2006-09-01

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Intravascular lesions of the hand  

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Full Text Available Abstract Introduction Intravascular lesions of the hand comprise reactive and neoplastic entities. The clinical diagnosis of such lesions is often difficult, and usually requires pathologic examination. We present the largest series to date of intravascular lesions affecting the hand. Methods A retrospective review of intravascular (arterial and venous) lesions involving the hand was conducted. Data regarding clinicopathologic findings were analyzed. Results We identified 10 patients with intravascular lesions of their hands including thromboemboli (n = 3), reactive intravascular conditions such as papillary endothelial hyperplasia or Masson's tumor (n = 2) and fasciitis (n = 1), as well as vascular neoplasms including pyogenic granuloma (n = 2) and angioleiomyoma (n = 2). Conclusion Blood vessel injury and/or venous thrombosis may predispose to several intravascular lesions of the hand. Recognition of reactive entities from neoplastic conditions is important.

Pantanowitz Liron; Duke Wayne H

2008-01-01

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Coagulación intravascular diseminada/ Disseminated intravascular coagulation  

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Full Text Available Abstract in spanish La coagulación intravascular diseminada (CID) es una entidad clínica frecuente que se presenta como fenómeno secundario a diversas enfermedades entre las cuales se destacan las infecciones graves, las neoplasias y las catástrofes obstétricas. Se caracteriza por una activación difusa y simultánea de los sistemas endógenos de la coagulación y la fibrinólisis. El depósito de pequeños trombos en la circulación conduce finalmente a disfunción orgánica múltiple (more) y en algunos casos a la muerte. Las manifestaciones clínicas pueden incluir fenómenos trombóticos y hemorrágicos. Se ha propuesto un puntaje de fácil aplicación para simplificar el diagnóstico de la entidad. El tratamiento incluye el control específico de la causa subyacente que favorece la aparición de la CID, el soporte con hemoderivados en pacientes con manifestaciones de sangrado y la anticoagulación terapéutica en pacientes con trombosis mayores. El desarrollo de CID es un factor pronóstico adverso que aumenta significativamente la tasa de mortalidad. En este artículo de revisión se incluyen los siguientes aspectos de la CID: historia, epidemiología, clasificación, entidades asociadas, fisiopatología, clínica, diagnóstico, tratamiento y pronóstico. Abstract in english Disseminated intravascular coagulation (DIC) is a frequent clinical entity that presents as a secondary phenomenon associated with some diseases, including, among others, severe infections, neoplastic disorders and obstetric catastrophes. It is characterized by a diffuse and simultaneous activation of the clotting and fibrinolytic systems. The deposit of small thrombi in the circulation eventually leads to dysfunction of multiple organs, and in some cases to death. Clinic (more) al findings include thrombotic as well as hemorrhagic manifestations. A simple scoring system has been proposed to aid in the diagnosis of this entity. Treatment includes the specific management of the underlying cause that triggered the DIC, support with blood products in patients with bleeding manifestations and therapeutic anticoagulation in patients with thrombotic events. The development of DIC is an adverse prognostic factor that significantly increases mortality. In this review article the following aspects of CID are included: history, epidemiology, classification, associated diseases, physiopathology, clinical presentation, diagnosis, treatment and prognosis.

Arango Barrientos, Marcos

2010-12-01

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Linfoma del manto/ Mantle cell lymphoma  

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Full Text Available Abstract in spanish El linfoma del manto representa el 7% de los linfomas no Hodgkin del adulto. Se trata de una neoplasia de células B monomorfas de talla pequeña o mediana con núcleo irregular. Las células tumorales expresan fuertemente IgM e IgD, así como los antígenos de clase B. La proteína nuclear ciclina D1 está presente en todos los casos, y es el "gold estándar" para el diagnóstico. La traslocación t(11;14) (q13;q32) en la mayoría de los casos da lugar a un reordenamient (more) o del locus BCL-1 y una sobreexpresión del gen de ciclina D1. La mayoría de los pacientes presentan estadios avanzados. El linfoma del manto es una neoplasia incurable, pero puede ser tratada con diferentes esquemas de quimioterapia (R-Hyper-CVAD, R-CHOP, bortezomib) y los pacientes jóvenes podrían ser sometidos a quimioterapia de alta dosis y trasplante de médula ósea autólogo o alogénico. Abstract in english Mantle cell lymphoma accounts for approximately 7% of adult Non-Hodgkin Lymphomas. It is a neoplasm of monomorphous small to medium-sized B cells with irregular nuclei. The tumor cells express strong IgM and IgD, and B-cell-associated antigens. Nuclear cyclin D1 protein is present in all cases and is the gold standard for the diagnosis. The t(11;14) (q13;q32) in the majority of the cases results in rearrangement of the BCL-1 locus and overexpression of the cyclin D1 gene. (more) Most patients present with disseminated disease. Mantle cell lymphoma is an incurable neoplasm, but it may be treated with different chemotherapy regimen (R-Hyper-CVAD, R-CHOP, bortezomib) and young patients should be considered for high-dose therapy and autologous or allogeneic bone marrow transplantation.

Khosravi Shahi, P.; del Castillo Rueda, A.; Pérez Manga, G.

2007-03-01

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Linfoma não Hodgkin gástrico Gastric non-Hodgkin Lymphoma  

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Full Text Available Os linfomas extralinfonodais representam aproximadamente 1/3 de todos os linfomas não Hodgkin (LNH) e, embora possam ter início em qualquer tecido, mais frequentemente acometem o trato gastrointestinal, sendo o estômago o órgão responsável pela grande maioria dos casos. Os linfomas primários gástricos são comumente LNH, sendo representados em mais de 95% dos casos pelo linfoma difuso de grandes células B e pelo linfoma MALT (mucosa associated lymphoid tissue). De evolução indolente, o linfoma MALT destaca-se por ser um modelo de câncer secundário à estimulação antigênica crônica exercida por uma bactéria denominada Helicobacter pylori (HP). No outro polo, situa-se o linfoma difuso de células B (LDGCB), que, de patogênese duvidosa, pode tratar-se de uma transformação de LNH MALT ou ainda se caracterizar por um linfoma "de novo". Neste estudo, revisamos a literatura, enfatizando aspectos importantes à prática clínica destes linfomas.Extranodal lymphomas account for about 30% of all non-Hodgkin lymphomas (NHL), and although they can originate in any tissue, the gastrointestinal tract is the most commonly affected structure with the stomach being the most common subtype. Diffuse Large B cell lymphoma (DLBCL) and MALT (mucosa associated lymphoid tissue) lymphoma account for more than 95% of the cases of gastric lymphoma. The indolent development of MALT lymphoma stands out as it is a type of cancer subject to chronic antigen stimulation by the Helicobacter pylori bacteria. Conversely, diffuse large B cell lymphomas, whose pathogenesis is uncertain, can be a transformation from MALT NHL or perhaps a new type of lymphoma. In this study we carried out a review of the literature, stressing the key aspects of these lymphomas in the clinical practice.

Renata O. Costa; Abrahão E. Hallack Neto; Dalton A. F. Chamone; Vera Lúcia Aldred; Luis F. Pracchia; Juliana Pereira

2010-01-01

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Linfoma não Hodgkin gástrico/ Gastric non-Hodgkin Lymphoma  

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Full Text Available Abstract in portuguese Os linfomas extralinfonodais representam aproximadamente 1/3 de todos os linfomas não Hodgkin (LNH) e, embora possam ter início em qualquer tecido, mais frequentemente acometem o trato gastrointestinal, sendo o estômago o órgão responsável pela grande maioria dos casos. Os linfomas primários gástricos são comumente LNH, sendo representados em mais de 95% dos casos pelo linfoma difuso de grandes células B e pelo linfoma MALT (mucosa associated lymphoid tissue). D (more) e evolução indolente, o linfoma MALT destaca-se por ser um modelo de câncer secundário à estimulação antigênica crônica exercida por uma bactéria denominada Helicobacter pylori (HP). No outro polo, situa-se o linfoma difuso de células B (LDGCB), que, de patogênese duvidosa, pode tratar-se de uma transformação de LNH MALT ou ainda se caracterizar por um linfoma "de novo". Neste estudo, revisamos a literatura, enfatizando aspectos importantes à prática clínica destes linfomas. Abstract in english Extranodal lymphomas account for about 30% of all non-Hodgkin lymphomas (NHL), and although they can originate in any tissue, the gastrointestinal tract is the most commonly affected structure with the stomach being the most common subtype. Diffuse Large B cell lymphoma (DLBCL) and MALT (mucosa associated lymphoid tissue) lymphoma account for more than 95% of the cases of gastric lymphoma. The indolent development of MALT lymphoma stands out as it is a type of cancer subj (more) ect to chronic antigen stimulation by the Helicobacter pylori bacteria. Conversely, diffuse large B cell lymphomas, whose pathogenesis is uncertain, can be a transformation from MALT NHL or perhaps a new type of lymphoma. In this study we carried out a review of the literature, stressing the key aspects of these lymphomas in the clinical practice.

Costa, Renata O.; Hallack Neto, Abrahão E.; Chamone, Dalton A. F.; Aldred, Vera Lúcia; Pracchia, Luis F.; Pereira, Juliana

2010-02-01

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Complicaciones neurológicas en pacientes con linfomas  

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Full Text Available Se realizó un estudio descriptivo prospectivo en 270 pacientes con diagnóstico de linfoma ingresados en el Servicio de Hematología del Hospital Clinicoquirúrgico "Hermanos Ameijeiras" de Ciudad de La Habana, Cuba, en el período comprendido del 1ro de marzo de 1996 al 31 de diciembre de 1998, para conocer las complicaciones neurológicas. Se detectaron 26 pacientes con complicaciones neurológicas. De 188 enfermos con linfomas no-Hodgkin, el 12,2 % presentó manifestaciones neurológicas. En estos pacientes, la infiltración leptomeníngea fue la complicación neurológica más frecuente. En los 82 pacientes con enfermedad de Hodgkin, solamente 3,6 % tuvieron alteraciones neurológicas y la infección por Herpes zoster fue la más común. Se observó el mayor porcentaje de pacientes con síntomas y signos atribuibles a compresión de la médula espinal y a la alteración de pares craneales, la cefalea como el síntoma más común y el déficit motor, el signo más frecuente. Se comprobó que los pacientes con linfoma no Hodgkin de alto grado de malignidad presentaron el mayor porcentaje de complicaciones neurológicas (28,7 %) y el tiempo promedio entre el diagnóstico del linfoma y el diagnóstico de la complicación neurológica fue menor en estos enfermos (5,5 meses). El tiempo de supervivencia después del diagnóstico de las manifestaciones neurológicas en la mayoría de los pacientes fue inferior a un año. De los 14 pacientes fallecidos, la complicación neurológica fue la principal causa directa de la muerteA prospective and descriptive study was carried out in 270 patients diagnosed of lymphoma, admitted in Hematology Service of "Hermanos Ameijeiras" Clinical Surgical Hospital in Havana City, Cuba, from March 1, 1996 to December 31, 1998, to assess neurologic complications. 26 patients presenting with neurologic complications were detected. From 188 sick persons with non-Hodgkin's lymphoma, 12,2 % had neurologic manifestations. In these patients, leptomeninges infiltration was the more frequent neurologic complication. In 82 patients with Hodgkin's disease, only 3,6 % had neurologic alteration and Herpes zoster infection was the commonest one. We found higher percent of patients with syndromes attributable to spinal cord compression and to craneal pars disturbance, headache was commonest and motor deficit the more frequent one. It was confirmed that patients carriers of high grade malinancy non-Hodgkin' s lymphoma, had the great percentage of neurologic complications (28,7 %), and average time between diagnosis of lymphoma and that of neurologic complications was shorter in these patients was (5,5 months). Survival after diagnosis of neurologic manifestations in most patients was under l year. In 14 patients deceaced, neurologic complication was main direct cause of death

Nelson Gómez Viera; Marisol Monteagudo Torres; Raúl de Castro Arenas; Dania Ruiz García

2000-01-01

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Linfoma angiocéntrico centrofacial/ Centrofacial angiocentric lymphoma  

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Full Text Available Abstract in spanish El linfoma angiocéntrico centrofacial es una neoplasia linfoide rara, con un diagnóstico a menudo difícil, debido al cuadro clínico inespecífico y a que muchas veces son necesarias varias biopsias para llegar a un diagnóstico correcto. Se trata de un linfoma no Hodgkin(LNH) agresivo, de localización preferente en el tracto respiratorio superior (sobre todo en cavidad nasal), y con un pronóstico ominoso, ya que la supervivencia media es de 12-18 meses aproximadamen (more) te(1). Predomina en orientales y sudamericanos, entre los 50-60 años de edad, y con ligera preferencia por el sexo masculino (2:1). Se presenta el caso de una paciente ecuatoriana que acude a nuestro servicio con edema hemifacial, rinorrea achocolatada y obstrucción respiratoria nasal de 1 mes de evolución, sin respuesta al tratamiento antibiótico y antiinflamatorio, que tras realizar varias pruebas diagnósticas se evidenció histológicamente la presencia de un linfoma T extranodal de tipo nasal (también llamado linfoma de células T angiocéntrico). Abstract in english The centrofacial angiocentric lymphoma is a rare lymphoid neoplasm, with an often-difficult diagnosis due to the non-specific clinical picture. On many occasions it is necessary to perform various biopsies to reach the correct diagnosis. This lymphoma is an aggressive Non-Hodgkin?s (NHL) type, which is normally found in the upper respiratory tract (predominantly in the nasal cavity), and has an ominous prognosis, as the average survival rate is between 12 and 18 months ( (more) 1). It is predominantly found in subjects of oriental and South American extraction, who are between the ages of 50 and 60 years and with a slight tendency towards males (2:1). This is the case study of a female Ecuadorian patient who was referred to our department with a hemifacial edema, chocolate-like rhinorrhea and nasal respiratory obstruction, which had been treated with antibiotics and anti-inflammatories for a month without success. After performing a number of diagnostic tests, it was found histologically that the patient had an extranodal T-cell lymphoma of the nasal type (also known as T-cell angiocentric lymphoma).Key words: Centrofacial angiocentric lymphoma, T-cell nasal lymphoma, lethal midline granuloma.

Peral Cagigal, Beatriz; Galdeano Arenas, María; Crespo Pinilla, Juan Ignacio; García Cantera, José Miguel; Sánchez Cuéllar, Luis Antonio; Verrier Hernández, Alberto

2005-02-01

 
 
 
 
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Complicaciones neurológicas en pacientes con linfomas  

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Full Text Available Abstract in spanish Se realizó un estudio descriptivo prospectivo en 270 pacientes con diagnóstico de linfoma ingresados en el Servicio de Hematología del Hospital Clinicoquirúrgico "Hermanos Ameijeiras" de Ciudad de La Habana, Cuba, en el período comprendido del 1ro de marzo de 1996 al 31 de diciembre de 1998, para conocer las complicaciones neurológicas. Se detectaron 26 pacientes con complicaciones neurológicas. De 188 enfermos con linfomas no-Hodgkin, el 12,2 % presentó manifesta (more) ciones neurológicas. En estos pacientes, la infiltración leptomeníngea fue la complicación neurológica más frecuente. En los 82 pacientes con enfermedad de Hodgkin, solamente 3,6 % tuvieron alteraciones neurológicas y la infección por Herpes zoster fue la más común. Se observó el mayor porcentaje de pacientes con síntomas y signos atribuibles a compresión de la médula espinal y a la alteración de pares craneales, la cefalea como el síntoma más común y el déficit motor, el signo más frecuente. Se comprobó que los pacientes con linfoma no Hodgkin de alto grado de malignidad presentaron el mayor porcentaje de complicaciones neurológicas (28,7 %) y el tiempo promedio entre el diagnóstico del linfoma y el diagnóstico de la complicación neurológica fue menor en estos enfermos (5,5 meses). El tiempo de supervivencia después del diagnóstico de las manifestaciones neurológicas en la mayoría de los pacientes fue inferior a un año. De los 14 pacientes fallecidos, la complicación neurológica fue la principal causa directa de la muerte Abstract in english A prospective and descriptive study was carried out in 270 patients diagnosed of lymphoma, admitted in Hematology Service of "Hermanos Ameijeiras" Clinical Surgical Hospital in Havana City, Cuba, from March 1, 1996 to December 31, 1998, to assess neurologic complications. 26 patients presenting with neurologic complications were detected. From 188 sick persons with non-Hodgkin's lymphoma, 12,2 % had neurologic manifestations. In these patients, leptomeninges infiltration (more) was the more frequent neurologic complication. In 82 patients with Hodgkin's disease, only 3,6 % had neurologic alteration and Herpes zoster infection was the commonest one. We found higher percent of patients with syndromes attributable to spinal cord compression and to craneal pars disturbance, headache was commonest and motor deficit the more frequent one. It was confirmed that patients carriers of high grade malinancy non-Hodgkin' s lymphoma, had the great percentage of neurologic complications (28,7 %), and average time between diagnosis of lymphoma and that of neurologic complications was shorter in these patients was (5,5 months). Survival after diagnosis of neurologic manifestations in most patients was under l year. In 14 patients deceaced, neurologic complication was main direct cause of death

Gómez Viera, Nelson; Monteagudo Torres, Marisol; de Castro Arenas, Raúl; Ruiz García, Dania

2000-06-01

42

Transfusión intrauterina intravascular  

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Full Text Available Objetivo: Evaluar los resultados de 90 transfusiones intrauterinas intravasculares realizadas en 45 fetos afectados por aloinmunización Rh. Método: Descripción del procedimiento de transfusiones intrauterinas intravasculares y presentación de la evaluación y seguimiento prospectivo de 90 transfusiones llevadas a cabo entre el período 1995- 2002. Ambiente: Unidad de Alto Riesgo del Servicio de Prenatal de la Maternidad “Concepción Palacios”. Caracas. Resultados: La edad promedio de las pacientes fue 25,8 años; se realizaron en promedio 2 transfusiones por paciente, con un mínimo de 1 y un máximo de 4; la mayoría de las pacientes tenían antecedentes de importancia como mortinato anterior e historia de enfermedad hemolítica; la principal indicación para realizar la el procedimiento fue la lectura de densidad óptica seguida por el hidrops fetal; la edad promedio para realizar la primera transfusión fue de 25,6 semanas con un mínimo de 20 semanas; los valores de hemoglobina fetal previa a la primera oscilaron entre 2 y 11,3 g/dL ascendiendo posterior a la transfusión a valores entre 5 y 15,3 g/dL; la sobrevida total fue de 69 % y al analizar sólo los fetos sin hidrops la sobrevida ascendió a 84,37 %. Conclusiones: La prevención con el uso de inmunoglobulina anti Rh D es definitivamente el mejor protocolo para evitar la anemia fetal por aloinmunización Rh, cuando se produce la enfermedad hemolítica intrauterina el mejor tratamiento es la reposición de sangre a través del cordón umbilical. En nuestro trabajo confirmamos que se debe adquirir una amplia experiencia en el manejo de las transfusiones intrauterinas para de esta forma prolongar la vida intrauterina y así alcanzar mayor madurez y probabilidad de sobrevida neonatal con menores riesgos y complicaciones.Objective: To present the results of 90 intrauterine intravascular transfusions performed in 45 Rh isoinmunized fetuses. Method: Description of the intrauterine intravascular transfusion´s procedure and presentation of evaluation and prospective floow up of 90 transfusions practiced from 1995 to 2002. Setting: High Risk Unit of Prenatal Service at Maternidad Concepción Palacios. Caracas. Results: The mean age of patients was 25.8 years; the number of transfusions ranged from one to tour (the mean was two); most patients had important records of fetal death and hemolytic disease; transfusion was mainly prescribed after optical density values followed by fetal hydrops. Gestational age for the first procedure was 25.6 weeks with a minimum of 20 weeks; fetal haemoglobin values prior to the first transfusion ranged between 2-11.3 g/dL increasing to 5-15.3 g/dL post transfusion. Total survival was 69 % and increased to 84.37 % in the nonhydropic group. Conclusion: Prevention using antiRhD inmunoglobulin is definitively the best protocol when avoiding fetal anaemia due to Rh isoimmunization. When intrauterine hemolytic disease occurs, blood transfusion through umbilical cord seems to be the best option. In our experience, we confirmed that the accumulation of experience in intrauterine intravascular transfusion is needed in order to extend intrauterine life and so achieve a higher neonatal outcome along with less risk and complications.

Freddy González Arias; Iván Paravisini; Jazmín Morales; Nelly Vásquez de Martínez

2006-01-01

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LINFOMA NO HODGKIN PRIMARIO DE LA MAMA  

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Full Text Available Abstract in spanish El linfoma no Hodgkin primario de la mama es una patología poco frecuente, constituye menos del 0,5% de todos los tumores mamarios malignos. Debido a que carecen de características propias, tanto clínicas, mamográficas y ultrasonográficas, resulta muy difícil establecer el diagnóstico preoperatorio, confundiéndose con el carcinoma mamario, incluso en el análisis histológico contemporáneo. Presentamos el caso de un linfoma no Hodgkin primario de la mama en una paciente de 57 años Abstract in english Primary non-Hodgkin lymphoma of the breast is a rare entity. They represent less than 0.5% of all breast cancer malignancies. No features at clinical presentation distinguish patients with lymphoma from those with carcinoma of the breast. There are both mammographic and sonographic difficulties to establish the preoperative diagnosis. Contemporary frozen sections can be mistaken with breast carcinoma. In this article we present a case of a primary non-Hodgkin lymphoma of the breast in a 57 years old women

Pardo G, Mario; Burgos S, Nelson

2003-01-01

44

Manifestaciones pulmonares en pacientes con linfomas  

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Full Text Available Abstract in spanish Se realizó un estudio descriptivo en 88 pacientes con linfomas (25 con enfermedad de Hodgkin y 63 con linfoma no Hodgkin) atendidos en el Hospital Clinicoquirúrgico "Hermanos Ameijeiras" desde abril de 1997 hasta diciembre de 1998, para identificar las manifestaciones pulmonares. Se estudiaron los síntomas y signos del aparato respiratorio y los resultados de la radiografía del tórax en todos los pacientes. En 79 de ellos se realizaron pruebas funcionales respiratori (more) as. Predominaron los pacientes asintomáticos (69/88; 78,4 %) (p Abstract in english A descriptive study was conducted in 88 patients with lymphomas (25 Hodgkin?s disease and 63 non-Hodgkin?s lymphoma) seen at "Hermanos Ameijeiras" Clinical and Surgical Hospital from April 1997 to December 1998. Its objective was to identify the pulmonary manifestations. Symptoms and signs of the respiratory system and chest Rx results were analyzed in all the patients. Seventy-nine of them underwent respiratory function testing. Asymptomatic patients prevailed (69/88 f (more) or 78,4 %) (p

de la Campa, Jesús Diego; Carnot Uría, José; Muñío Perurena, Jorge; de Castro Arenas, Raúl; Pérez Román, Guillermo; Suárez González, Lisbett

2002-04-01

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Tejido linfoide y linfomas gástricos Lymphoid tissue and gastric lymphomas  

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Full Text Available En este artículo hemos realizado una amplia revisión de los linfomas primarios gástricos, su clasificación y aspectos clínico-patológicos más importantes, haciendo énfasis especial en los linfomas MALT o asociados a las mucosas y su relación con la infección por Helicobacter pylori.In this review we describe various aspects of the primary gastric lymphomas, the classification, and the most important clinico-pathological aspects, with emphasis in mucosa associated lymphoma (MALT) and the Helicobacter pylori infection.

Rocío del Pilar López P; Rafael Enrique Andrade P

2010-01-01

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Linfoma Nasossinusal de Células T Natural Killer: Relato de Caso  

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Full Text Available Introdução: O linfoma nasal primário é um tumor extranodal raro e representa 0,44% de todos os linfomas extranodais nessa localização. O linfoma nasal primário deriva da linhagem T em torno de 75% dos casos. Objetivo: Descrever um caso de Linfoma nasossinusal de células T Natural Killer, atendido no Hospital das Clínicas da Universidade Federal de Goiás. Relato do Caso: Paciente de 48 anos, sexo feminino, apresentando tumefação difusa na hemiface esquerda, de consistência firme-elástica e dolorosa a compressão digital. Tomografia dos seios da face identificou um velamento maxilar total à esquerda e de algumas células etmoidais posteriores. Com a hipótese diagnóstica de uma afecção tumoral, optou-se por remoção cirúrgica via transmaxilar, sendo encaminhado o material para biopsia. O exame histopatológico diagnosticou um tumor altamente necrótico padrão angiocêntrico, população linfoide polimórfica e atípica (Linfoma T/NK), diante do diagnóstico a paciente foi submetida à quimioterapia com regressão total do edema facial. Comentários Finais: O otorrinolaringologista deve estar atento para a existência dos linfomas entre as doenças nasossinusais, pois o diagnóstico precoce melhora a sobrevida na medida em que previne metástases, crescimento e destruição local.

Castro, Victor Labres da Silva; Ferreira, João Batista; Guimarães, Valeriana de Castro; Nery, Gustavo Vasconcelos; Aires, Tiago Fernando Côrrea; Alves, Wilder

2011-01-01

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Mucormicosis yeyunal en paciente con linfoma de Hodgkin/ Jejunal mucormycosis in a patient with Hodgkin's lymphoma  

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Full Text Available Abstract in spanish Comunicamos un caso de mucormicosis intestinal en un hombre de 46 años de edad, diagnosticado de enfermedad de Hodgkin clásica, estadio IV-B. Durante la primera fase de la quimioterapia, sufrió una hemorragia digestiva masiva secundaria a una úlcera yeyunal por zigomicosis tipo mucor, diagnosticada por biopsia endoscópica. El paciente fue tratado con antifúngicos y resección quirúrgica del intestino afectado. En la cirugía, se apreció una doble perforación yeyu (more) nal cubierta. El estudio anatomopatológico de la pieza confirmó el diagnóstico previo. Tras un año de seguimiento, el paciente está recuperado y su linfoma de Hodgkin en remisión completa. Tras una extensa revisión de la literatura, según nuestro conocimiento, este es el segundo caso publicado en la literatura de mucormicosis intestinal en un paciente con linfoma de Hodgkin. Abstract in english We report a case of intestinal mucormycosis in a 46-year-old male diagnosed with classical Hodgkin's disease, IV-B stage. During the first phase of chemotherapy he had a massive digestive bleeding event secondary to a jejunal ulcer, and zygomicosis mucor-type was diagnosed by endoscopic biopsy. The patient was treated with antifungal drugs and surgical resection of the intestine involved. At surgery a double covered perforation of the jejunum was seen. Pathological examin (more) ation confirmed the previous diagnosis. After one year of follow-up the patient is doing well, and his lymphoma is on remission. To our best knowledge this is the second case of intestinal mucormycosis in a patient with Hodgkin's lymphoma reported in the medical literature.

Madrigal, B.; Arenal, J. J.; Torres, A.; Peñarrubia, M. J.; Vara, A.; Ruiz, M.; Hernández, A.; Enríquez, P.

2008-08-01

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Dosimetry in intravascular brachytherapy  

International Nuclear Information System (INIS)

[en] Among the cardiovascular diseases responsible for deaths in the adult population in almost all countries of the world, the most common is acute myocardial infarction, which generally occurs because of the occlusion of one or more coronary arteries. Several diagnostic techniques and therapies are being tested for the treatment of coronary artery disease. Balloon angioplasty has been a popular treatment which is less invasive than traditional surgeries involving revascularization of the myocardium, thus promising a better quality of life for patients. Unfortunately, the rate of restenosis (re-closing of the vessel) after balloon angioplasty is high (approximately 30-50% within the first year after treatment).Recently, the idea of delivering high radiation doses to coronary arteries to avoid or delay restenosis has been suggested. Known as intravascular brachytherapy, the technique has been used with several radiation sources, and researchers have obtained success in decreasing the rate of restenosis in some patient populations. In order to study the radiation dosimetry in the patient and radiological protection for the attending staff for this therapy, radiation dose distributions for monoenergetic electrons and photons (at nine discrete energies) were calculated for blood vessels of diameter 0.15, o,30 and 0.45 cm with balloon and wire sources using the radiation transport code MCNP4B. Specific calculations were carried out for several candidate radionuclides as well. Two s tent sources (metallic prosthesis that put inside of patient's artery through angioplasty) employing 32 P are also simulated. Advantages and disadvantages of the various radionuclides and source geometries are discussed. The dosimetry developed here will aid in the realization of the benefits obtained in patients for this promising new technology. (author)

2000-01-01

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Primary testicular non-Hodgkin's lymphoma: a review article/ Linfoma primário do testículo: um artigo de revisão  

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Full Text Available Abstract in portuguese O linfoma primário do testículo (LPT) foi descrito como uma entidade clínica pela primeira vez em 1866. É uma doença rara e corresponde a 1% de todos os linfomas não-Hodgkin, 2% de todos os linfomas extranodais e 5% de todos as neoplasias testiculares. É o tumor testicular mais comum em homens entre 60 e 80 anos de idade. LPT é único em sua elevada incidência de envolvimento bilateral (8-38%), sendo o tumor testicular bilateral mais comum. Tem uma predileção p (more) or disseminação para regiões extranodais não-contíguas, especialmente para o sistema nervoso central (SNC). Estágios avançados da doença são usualmente tratados com quimioterapia à base de doxorubicina. Para os estágios mais precoces, as opiniões são divergentes quanto à quimioterapia associada à orquiectomia. A alta prevalência de disseminação, especialmente para o SNC, sugere o uso de quimioterapia intratecal como profilaxia. Estudos prospectivos multicêntricos incluindo um grande número de pacientes poderiam resolver a questão com relação ao manejo deste subtipo de linfoma não-Hodgkin. Abstract in english Primary testicular non-Hodgkin's lymphoma was first described as a clinical entity in 1866. It is a rare disease and accounts for 1% of all non-Hodgkin's lymphoma, 2% of all extranodal lymphomas and 5% of all testicular neoplasms. It is the most common testicular tumor in males between sixty and eighty years of age. Testicular non-Hodgkin's lymphoma is unique in its high incidence of bilateral involvement (8-38%), and it is also the most common bilateral testicular tumor. (more) Testicular non-Hodgkin's lymphoma has a predilection for spreading to non-contiguous extranodal sites, especially the central nervous system. Advanced-stage disease is usually managed with doxorubicin-based chemotherapy. For early-stage disease, opinion is divided regarding systemic chemotherapy following orchidectomy. The high incidence of spreading, especially to the central nervous system, leads to advocacy of the use of central nervous system prophylaxis with intrathecal chemotherapy. Prospective multicenter trials incorporating a large number of patients may lead to better guidelines for optimal management of this subtype of non-Hodgkin's lymphoma.

Bhatia, Komal; Vaid, Ashok Kumar; Gupta, Sachin; Doval, Dinesh Chandra; Talwar, Vineet

2007-09-01

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Manifestaciones pulmonares en pacientes con linfomas  

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Full Text Available Se realizó un estudio descriptivo en 88 pacientes con linfomas (25 con enfermedad de Hodgkin y 63 con linfoma no Hodgkin) atendidos en el Hospital Clinicoquirúrgico "Hermanos Ameijeiras" desde abril de 1997 hasta diciembre de 1998, para identificar las manifestaciones pulmonares. Se estudiaron los síntomas y signos del aparato respiratorio y los resultados de la radiografía del tórax en todos los pacientes. En 79 de ellos se realizaron pruebas funcionales respiratorias. Predominaron los pacientes asintomáticos (69/88; 78,4 %) (p A descriptive study was conducted in 88 patients with lymphomas (25 Hodgkin’s disease and 63 non-Hodgkin’s lymphoma) seen at "Hermanos Ameijeiras" Clinical and Surgical Hospital from April 1997 to December 1998. Its objective was to identify the pulmonary manifestations. Symptoms and signs of the respiratory system and chest Rx results were analyzed in all the patients. Seventy-nine of them underwent respiratory function testing. Asymptomatic patients prevailed (69/88 for 78,4 %) (p < 0,01); the most frequent respiratory symptom was cough (6/25 for 24 % in Hodgkin’s disease and 10/63 for 15,8 % in non-Hodgkin’s lymphomas). A high number of patients did not present alterations when they were applied a respiratory physical exam (73/88 for 82,9 %) (p < 0,01); the reduction of vesicular breath sounds was the most frequent disturbance (15/88 for 17 %). It was observed that chest radiology was normal in more than half of the cases (53/88 for 60.2%) (p = 0,025) and mediastinal adenopathies were the most frequent disorders (30/88 for 34 %). Alterations in X-rays were mostly found in Hodgkin’s disease (18/25 for 72 %) that non-Hodgkin´s lymphoma (17/63, 27 %). The respiratory function tests were normal in 74.7 % of the cases (59/79) (p < 0,01) whereas slight restrictive ventilatory disorder was more detected (9/79 for 11,4 %). Data revealed that in the group of studied patients, the frequency of pulmonary manifestations is similar to the one reported by other authors and that there are neither pathognomonic respiratory symptoms nor signs for each type of lymphoma.

Jesús Diego de la Campa; José Carnot Uría; Jorge Muñío Perurena; Raúl de Castro Arenas; Guillermo Pérez Román; Lisbett Suárez González

2002-01-01

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ENFERMEDAD RENAL POLIQUISTICA ASOCIADA A LINFOMA EXTRANODAL EN UN CANINO  

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Full Text Available Objetivo: Presentar el caso de un paciente canino, con enfermedad renal poliquística, asociada alinfoma extranodal. Materiales y métodos: Se estudió el caso de un paciente canino de raza SiberianHusky de 7 años de edad, al que se le encontraron múltiples nódulos renales bilaterales, condiagnóstico histopatológico de linfoma extranodal. Resultados: Se expone el caso clínico de unpaciente canino de raza Siberian Husky, que es presentado a consulta dermatológica por exhibirlesiones alopécicas multifocales. Una vez realizado el examen físico sistemático se evidenció demanera incidental nefromegalia. Los exámenes paraclínicos e histopatológicos aplicadosdemostraron la presencia de enfermedad renal poliquística asociada a linfoma extranodal, comoconsecuencia se presento falla renal crónica. Conclusiones: El linfoma extranodal renal es unaentidad patológica de rara presentación, clínicamente cursa con signos muy similares a otrasalteraciones tumorales, su diagnóstico suele ser histopatológico.

Diego Echeverry B; Ximena Barbosa S; Edwin Buriticá G

2006-01-01

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Linfoma T-NK extranasal y extranodal en hipofaringe: un tipo de linfoma poco frecuente en nuestro medio  

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Full Text Available Varón de 81 años que presenta una lesión en la hipofaringe de crecimiento rápido. Se le diagnostica de linfoma T de tipo “Natural Killer” (NK), un tipo de linfoma raro en esta localización. Con el estudio inmunhistoquímico pudo caracterizarse este linfoma. Fallece en el transcurso del primer ciclo de tratamiento quimioterápico. Se le realiza estudio necrópsico para evaluar la rápida evolución del tumor, su extensión y la causa de la muerte. La autopsia sigue mostrándose una herramienta básica y fundamental para el estudio de ciertas entidades raras en su frecuencia o localización. En este caso además, debido a su rápida evolución, la autopsia fue fundamental para demostrar la persistencia de enfermedad y su extensión a otros órganos no identificados en vida, como la médula ósea, con implicaciones en el estadiaje de la enfermedad.

M. Mayorga Fernández; C. González-Vela; S. Hermana Ramirez; J.F. Val Bernal; F. Mazorra Macho

2006-01-01

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Primary lymphoma of the colon Linfoma primario de colon  

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Full Text Available Background: primary colorectal lymphoma is a very rare disease, representing less than 0.5 % of all primary colorectal neoplasms. The gastrointestinal tract is the most frequently involved site of all extranodal lymphomas, the most common type of that is non-Hodgkin's lymphoma. Early diagnosis is often difficult because of unspecific symptoms. Therapeutic approaches have classically included radical resection, chemotherapy and radiotherapy. Materials and methods: we present our experience in the management of primary colorectal lymphomas over a 17-year period (1994-20011). Results: in this period 7 cases of primary colorectal lymphoma were diagnosed in our institution. Abdominal pain and change in bowel habit were the most frequent symptoms. Five patients underwent emergency surgery because of bleeding or bowel obstruction. All primary intestinal lymphomas studied were of the B-cell phenotype. Patients were followed up for a median of 59 months (range 1-180). Three of them are alive with no evidence of recurrence. Conclusion: combination treatment with chemotherapy and surgery can obtain good remission rate. Surgery can resolve complications such bleeding or intestinal perforation that are implicated in lymphoma mortality.Introducción: el linfoma primario de colon y recto es una patología poco prevalente, representa tan solo el 0,5 % de todas las neoplasias primarias de colon y recto. El tracto gastrointestinal es el lugar donde asientan la gran mayoría de los linfomas extranodales, siendo el más frecuente el tipo linfoma no-Hodking. El diagnóstico precoz es siempre difícil debido a que la sintomatología es muy poco específica. Los algoritmos terapéuticos han incluido clásicamente la resección radical, el tratamiento con quimioterapia y con radioterapia. Materiales y métodos: presentamos nuestra experiencia en el manejo de los linfomas primarios de colon en un periodo de 17 años (1994-2011). Resultados: en dicho periodo en nuestro centro fueron diagnosticaron 7 casos de linfoma primario de colon. El dolor abdominal y los cambios en el ritmo deposicional fueron los síntomas más frecuentes. Cinco pacientes requirieron tratamiento quirúrgico urgente debido a hemorragia digestiva u obstrucción intestinal. El estudio anatomopatológico reveló que todos los linfomas tenían el fenotipo de tipo B. Los pacientes tuvieron un seguimiento medio de 59 meses (rango 1-180). Tres de ellos siguen vivos sin evidencia de recidiva. Conclusión: el tratamiento combinado con quimioterapia y cirugía puede obtener buenos resultados de remisión. La cirugía puede resolver complicaciones como la hemorragia o la perforación intestinal, ambas directamente relacionadas con la mortalidad por linfoma.

Marta Pascual; Blanca Sánchez-González; Mar García; Miguel Pera; Luis Grande

2013-01-01

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Primary lymphoma of the colon/ Linfoma primario de colon  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Introducción: el linfoma primario de colon y recto es una patología poco prevalente, representa tan solo el 0,5 % de todas las neoplasias primarias de colon y recto. El tracto gastrointestinal es el lugar donde asientan la gran mayoría de los linfomas extranodales, siendo el más frecuente el tipo linfoma no-Hodking. El diagnóstico precoz es siempre difícil debido a que la sintomatología es muy poco específica. Los algoritmos terapéuticos han incluido clásicament (more) e la resección radical, el tratamiento con quimioterapia y con radioterapia. Materiales y métodos: presentamos nuestra experiencia en el manejo de los linfomas primarios de colon en un periodo de 17 años (1994-2011). Resultados: en dicho periodo en nuestro centro fueron diagnosticaron 7 casos de linfoma primario de colon. El dolor abdominal y los cambios en el ritmo deposicional fueron los síntomas más frecuentes. Cinco pacientes requirieron tratamiento quirúrgico urgente debido a hemorragia digestiva u obstrucción intestinal. El estudio anatomopatológico reveló que todos los linfomas tenían el fenotipo de tipo B. Los pacientes tuvieron un seguimiento medio de 59 meses (rango 1-180). Tres de ellos siguen vivos sin evidencia de recidiva. Conclusión: el tratamiento combinado con quimioterapia y cirugía puede obtener buenos resultados de remisión. La cirugía puede resolver complicaciones como la hemorragia o la perforación intestinal, ambas directamente relacionadas con la mortalidad por linfoma. Abstract in english Background: primary colorectal lymphoma is a very rare disease, representing less than 0.5 % of all primary colorectal neoplasms. The gastrointestinal tract is the most frequently involved site of all extranodal lymphomas, the most common type of that is non-Hodgkin's lymphoma. Early diagnosis is often difficult because of unspecific symptoms. Therapeutic approaches have classically included radical resection, chemotherapy and radiotherapy. Materials and methods: we prese (more) nt our experience in the management of primary colorectal lymphomas over a 17-year period (1994-20011). Results: in this period 7 cases of primary colorectal lymphoma were diagnosed in our institution. Abdominal pain and change in bowel habit were the most frequent symptoms. Five patients underwent emergency surgery because of bleeding or bowel obstruction. All primary intestinal lymphomas studied were of the B-cell phenotype. Patients were followed up for a median of 59 months (range 1-180). Three of them are alive with no evidence of recurrence. Conclusion: combination treatment with chemotherapy and surgery can obtain good remission rate. Surgery can resolve complications such bleeding or intestinal perforation that are implicated in lymphoma mortality.

Pascual, Marta; Sánchez-González, Blanca; García, Mar; Pera, Miguel; Grande, Luis

2013-02-01

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Hiperplasia papilar endotelial intravascular Intravascular papillary endothelial hyperplasia  

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Full Text Available La hiperplasia endotelial papilar intravascular (PEH), también conocida como hemangioendotelioma vegetante intravascular o pseudoangiosarcoma de Masson, es una lesión vascular benigna inusual, no neoplásica, que consiste en una rara proliferación endotelial reactiva, comúnmente localizada en la piel y en los tejidos subcutáneos. Es importante remarcar los aspectos que distinguen esta entidad de otras lesiones neoplásicas para evitar tratamientos inapropiados: se diferencia del angiosarcoma por su circunscripción, la localización en un vaso, su asociación con trombosis y su arquitectura papilar sin atipia citológica significativa o áreas de crecimiento sólido. El tratamiento consiste en la completa resección de la lesión incluyendo amplios márgenes para evitar la recurrencia.The intravascular papillary endothelial hyperplasia (PEH), also known as hémangioendothéliome végétant intra-vasculaire or Masson's pseudoangiosarcoma, is an unusual benign, non-neoplastic, vascular lesion, with rare non-neoplasic reactive endothelial proliferation most commonly located in the skin or subcutaneous tissues. It is important to remark the features that can distinguish this entity from other neoplasms to avoid inappropriate treatment. Pathological characteristics that distinguish PEH from angiosarcoma could be reduced to circumscription of the lesion, location in a vessel or association with thrombus and papillary architecture without significant cytologic atypia or areas of solid growth. Treatment consists of complete resection of the tumor, including wide enough margins to avoid recurrence.

R. Fernández García-Guilarte; J. Enríquez de Salamanca Celada; I. Comenero

2009-01-01

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Hiperplasia papilar endotelial intravascular/ Intravascular papillary endothelial hyperplasia  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish La hiperplasia endotelial papilar intravascular (PEH), también conocida como hemangioendotelioma vegetante intravascular o pseudoangiosarcoma de Masson, es una lesión vascular benigna inusual, no neoplásica, que consiste en una rara proliferación endotelial reactiva, comúnmente localizada en la piel y en los tejidos subcutáneos. Es importante remarcar los aspectos que distinguen esta entidad de otras lesiones neoplásicas para evitar tratamientos inapropiados: se di (more) ferencia del angiosarcoma por su circunscripción, la localización en un vaso, su asociación con trombosis y su arquitectura papilar sin atipia citológica significativa o áreas de crecimiento sólido. El tratamiento consiste en la completa resección de la lesión incluyendo amplios márgenes para evitar la recurrencia. Abstract in english The intravascular papillary endothelial hyperplasia (PEH), also known as hémangioendothéliome végétant intra-vasculaire or Masson's pseudoangiosarcoma, is an unusual benign, non-neoplastic, vascular lesion, with rare non-neoplasic reactive endothelial proliferation most commonly located in the skin or subcutaneous tissues. It is important to remark the features that can distinguish this entity from other neoplasms to avoid inappropriate treatment. Pathological charact (more) eristics that distinguish PEH from angiosarcoma could be reduced to circumscription of the lesion, location in a vessel or association with thrombus and papillary architecture without significant cytologic atypia or areas of solid growth. Treatment consists of complete resection of the tumor, including wide enough margins to avoid recurrence.

Fernández García-Guilarte, R.; Enríquez de Salamanca Celada, J.; Comenero, I.

2009-06-01

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LINFOMA T DE TIPO ANGIOINMUNOBLASTICO: ESTUDIO CLÍNICO-PATOLÓGICO DEL GRUPO DE ESTUDIO DE LINFOMAS DE JUJUY (GELJ)  

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Full Text Available ABSTRACTJujuy have a high incidence of lymphomas and among these a high number of T-cell lymphomas is observed. However the Angioimmunoblastic T-cell Lymphoma once a best characterized T-cell lymphomas, was not studied in Jujuy in both, incidence and clinicopathologic features. These lymphoma present a characteristic clinical findings and a distinctive histopathological picture with T-cell immunophenotype that permit a clear differentiation from other peripheral T-cell lymphomas.Angioimmunoblastic Peripheral T-cell lymphoma represent the 9,1% of our cases of lymphomas, registered between 1985 and July 2004, when we consider nodal and extranodal cases, but represent 18% among the nodal lymphomas. All the cases studied presenting the distinctive histopathologic picture, with effacement of the lymph node architecture, absence of germinal centers, polymorphic cytology, marked increase of arborizing vessel PAS-positive and accumulations of Follicular Dendritic Reticular Cells, CD21+. Clinically we observed generalized lymphadenopaty, skin lesions, pulmonary manifestations, systemic symptoms and aggressive behavior.RESUMEN:Jujuy es una zona de alta incidencia de linfomas y entre ellos se registra un elevado número de linfomas de células T. Pese a esto el linfoma T tipo linfadenopatía Angioinmunoblastica, uno de los mejor caracterizados linfomas de células T, no ha sido estudiado, tanto en su incidencia, como en sus caracteres clínico-patológicos. Estos linfomas presentan un cuadro clínico característico y un distintivo cuadro histopatológico e inmunofenotípico, que permiten su diferenciación de otros tipos de linfomas T.Este linfoma representa el 9,1% de los casos registrados en nuestro hospital entre 1985 y julio de 2004, cuando se consideran casos ganglionares y extraganglionres y el 18% de los casos ganglionares. Presentan el característico cuadro histopatológico con borramiento de la histoarquitectura ganglionar linfática, citología polimorfa, marcado incremento de vénulas postcapilares y mantos de células reticulares dendríticas positivas para CD21. Clínicamente se observó poliadenopatía generalizada, lesiones cutáneas, manifestaciones pulmonares, fenómenos alérgicos, síntomas sistémicos, estadio avanzado de enfermedad y una agresiva evolución clínica

Ana Laura Raynaud; Viviana Gloria Hope; Gabriela Lamas Hernández; Rebeca Mérida; Eugenia Fandiño; Ana Paula Gaite; Liliana Quispe; Graciela Berlingieri; Ana Carolina Ituarte; Ana Laura Raynaud

2005-01-01

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Processos linfoproliferativos da pele: parte 2 - linfomas cutâneos de células T e de células NK  

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Full Text Available Os linfomas cutâneos de células T/NK constituem um grupo de doenças linfoproliferativas extranodais atualmente classificadas e subdivididas de acordo com o comportamento clínico segundo consenso da Organização Mundial de Saúde e da Organização Européia para Pesquisa e Tratamento do Câncer. Os linfomas cutâneos de células T/NK de comportamento clínico indolente compreendem a micose fungóide clássica, a micose fungóide foliculotrópica, a reticulose pagetóide, a cútis laxa granulomatosa, o linfoma cutâneo primário de grande célula anaplásica, a papulose linfomatóide, o linfoma subcutâneo de célula T paniculite-símile e o linfoma cutâneo primário de pequena e média célula T CD4+ pleomórfica. Os linfomas cutâneos de células T/NK de comportamento agressivo incluem a síndrome de Sézary, o linfoma extranodal de célula T/NK, tipo nasal, o linfoma cutâneo primário agressivo de célula T CD8+ epidermotrópica, o linfoma cutâneo de célula T gd e o linfoma cutâneo primário de célula T periférica, não especificado. O linfoma-leucemia de células T do adulto e a neoplasia hematodémica CD4+CD56+, embora considerados linfomas sistêmicos, são aqui abordados por apresentarem-se inicialmente na pele em significativo número de pacientes. O diagnóstico desses processos é realizado pelo exame histopatológico complementado pela análise do fenótipo das células neoplásicas, imprescindível no processo classificatório. O estadiamento para a avaliação da extensão anatômica da doença considera além do envolvimento cutâneo, o estado clínico e histológico dos linfonodos e das vísceras. Avaliação hematológica é fundamental na caracterização da síndrome de Sézary. Os tratamentos preconizados incluem terapêuticas dirigidas exclusivamente à pele, modificadores da resposta biológica e quimioterapia sistêmica.

Sanches Jr José Antonio; Moricz Claudia Zavaloni M. de; Festa Neto Cyro

2006-01-01

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Linfoma de Hodgkin: aspectos atuais Hodgkin lymphoma: current issues  

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Full Text Available A par dos extraordinários avanços obtidos no tratamento do linfoma de Hodgkin, diversos desafios persistem na compreensão da biologia da doença, e na determinação de alternativas que maximizem a eficácia terapêutica e minimizem as toxicidades imediatas e tardias. O objetivo deste artigo é apresentar informações recentes que têm relevância imediata para aqueles que cuidam de pacientes com linfoma de Hodgkin (LH).Knowing the extraordinary advances obtained in the treatment of Hodgkin's lymphoma, several challenges persist related to the biology of the disease and to the determination of alternatives that maximize the therapeutic efficacy and minimize immediate and long-term toxicity. The aim of this article is to present recent information that has immediate relevance for those who care for patients with Hodgkin's lymphoma.

Nelson Spector

2009-01-01

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COMPROMISO MUSCULAR POR LINFOMA NO HODGKIN: CASO CLÍNICO Y REVISIÓN DEL TEMA/ MUSCLE INFILTRATION BY NON-HODGKIN LYMPHOMA: A CASE AND BIBLIOGRAPHIC REVIEW  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Se presenta un caso clínico de paciente con linfoma no Hodgkin tratado; en control tomográfico habitual se le solicitó PET-CT para complementar su estudio, que demuestra un foco metabólicamente activo en el espesor de músculo aductor izquierdo sin traducción tomográfica evidente. La lesión fue estudiada con ultrasonografia de partes blandas y biopsia dirigida, que resultó positiva para infiltración secundaria por linfoma. Este caso demuestra la utilidad de las t (more) écnicas complementarias en el manejo de estos pacientes, en especial la utilidad del PET-CT en el estudio de sitios inhabituales de diseminación. En este examen existe la posibilidad de identificar con precisión la localización de las lesiones mediante la TC complementaria, lo que permite efectuar posteriormente el estudio dirigido. Abstract in english A case report of a patient with treated Non-Hodgkin Lymphoma is presented. In his usual tomographic control patient was requested a PET-CT scan to supplement prior study that showed a metabo-lically active focus on the left adductor muscle without evident tomographic correlation. Lesion underwent both a soft tissue ultrasound study and a directed biopsy, the latter being positive for secondary infiltration by lymphoma. This case has demonstrated the usefulness of applying (more) complementary techniques in the management of these lesions, mainly of PET-CT scans in the study of unusual sites of spread. This combined medical imaging technique allows accurate lesion localization, which in turn permits performance of a subsequent directed study.

Avaria P, Pablo; Ortega M, Claudia; Pruzzo C, Rossana; Pizarro G, Alejandra; Amaral P, Horacio

2010-01-01

 
 
 
 
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COMPROMISO MUSCULAR POR LINFOMA NO HODGKIN: CASO CLÍNICO Y REVISIÓN DEL TEMA MUSCLE INFILTRATION BY NON-HODGKIN LYMPHOMA: A CASE AND BIBLIOGRAPHIC REVIEW  

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Full Text Available Se presenta un caso clínico de paciente con linfoma no Hodgkin tratado; en control tomográfico habitual se le solicitó PET-CT para complementar su estudio, que demuestra un foco metabólicamente activo en el espesor de músculo aductor izquierdo sin traducción tomográfica evidente. La lesión fue estudiada con ultrasonografia de partes blandas y biopsia dirigida, que resultó positiva para infiltración secundaria por linfoma. Este caso demuestra la utilidad de las técnicas complementarias en el manejo de estos pacientes, en especial la utilidad del PET-CT en el estudio de sitios inhabituales de diseminación. En este examen existe la posibilidad de identificar con precisión la localización de las lesiones mediante la TC complementaria, lo que permite efectuar posteriormente el estudio dirigido.A case report of a patient with treated Non-Hodgkin Lymphoma is presented. In his usual tomographic control patient was requested a PET-CT scan to supplement prior study that showed a metabo-lically active focus on the left adductor muscle without evident tomographic correlation. Lesion underwent both a soft tissue ultrasound study and a directed biopsy, the latter being positive for secondary infiltration by lymphoma. This case has demonstrated the usefulness of applying complementary techniques in the management of these lesions, mainly of PET-CT scans in the study of unusual sites of spread. This combined medical imaging technique allows accurate lesion localization, which in turn permits performance of a subsequent directed study.

Pablo Avaria P; Claudia Ortega M; Rossana Pruzzo C; Alejandra Pizarro G; Horacio Amaral P

2010-01-01

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Linfoma no Hodgkin testicular con compromiso de tejidos blandos  

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Full Text Available El compromiso testicular por linfoma es una manifestación extranodal de la enfermedad, manifestación inicial de una enfermedad nodal oculta o manifestación tardía de linfoma nodal diseminado. Corresponde al 5% de todos los tumores testiculares y es la neoplasia mas común del testículo en los pacientes mayores de 50 anos. [1]., sin embargo el linfoma primario de testículo es extremadamente raro [5]. corresponde al 1% de los LNH [3]. La mayoría de los linfomas testiculares son LNH B difuso de célula grande [4] con tendencia a presentar metástasis extra ganglionares, incluyendo piel, SNC, anillo de Waldeyer, testículo contra lateral, pulmones, siendo extremadamente inusual a músculo.[3] [6].Se presentan las imágenes con 18 F-FDG PET/CT de un paciente con LNH B difuso de célula grande de alta agresividad con metástasis a músculos de las pantorrillas.Palabras Claves:SummaryTesticular involvement by lymphoma may be a manifestation of primary extra nodal disease, initial manifestation of clinically occult nodal disease or a later manifestation of disseminated nodal lymphoma . Occur in 5% of all testis tumors and it is the most common testis cancer in patients older of 50 years. [1]. However the primary testis lymphoma is very uncommon [5]. correspond to1% of LNH [3].Most testicular lymphomas are diffuse large B-cell lymphomas [4] with tendency of widespread to extra nodal places, including skin, SNC, Waldeyer,s ring, contra lateral testis, lungs, and is very unusual to find muscle’s metastases.[3] [6].In this article we describe F-18 FDG PET/CT images of metastases to the muscles in a case of diffuse large B-cell lymphoma of high agressivity.

Bernal. P.; Duarte. M.; Ucros. G.

2008-01-01

63

[Intravascular sonography: initial clinical results  

UK PubMed Central (United Kingdom)

Intravascular ultrasound is a new diagnostic modality which, for the first time, provides high resolution images of the vessel wall. 91 intraluminal ultrasound studies were performed in 50 patients during the course of 55 diagnostic and therapeutic catheterizations. A F-6 ultrasound catheter (20 MHz) was used. The method is an easily and rapidly performed addition to angiography. Changes in vessel walls (arteriosclerosis, dissection, tumour infiltration) can be readily diagnosed and their extent can be accurately described. The ability to determine luminal cross sectional area is particularly helpful for planning and performing therapeutic interventions.

Düber C; Klose KJ; Erbel R; Schmiedt W; Thelen M

1991-02-01

64

Síndrome de vena cava superior: Una emergencia oncológica en niños con linfoma. Revisión de 5 casos Superior Vena Cava Syndrome: an oncologic emergency in children with lymphoma  

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Full Text Available Introducción: Un niño con cáncer puede presentar durante su enfermedad una emergencia, ya sea como manifestación inicial, en la fase de diagnóstico, durante la evolución o en el periodo terminal. Objetivo: Presentar nuestra experiencia en el manejo del síndrome de Vena Cava Superior en niños con linfoma. Pacientes y Método: Revisión retrospectiva de 44 fichas clínicas de menores de 15 años con linfoma tratados entre enero de 1989 y diciembre de 1999 en la Unidad de Hematología/Oncología Infantil del Hospital Clínico Regional de Valdivia. Resultados: 5 casos presentaron síndrome de Vena Cava Superior: Linfoma de Hodgkin 2. Linfoma no Hodgkin 3. El síndrome de Vena Cava Superior fue la manifestación inicial en 4. En la emergencia todos los pacientes recibieron corticoides y radioterapia. Tres pacientes se encuentran vivos y en remisión completa. Conclusiones: El síndrome de Vena Cava Superior, es poco frecuente en niños con patología tumoral, sin embargo, por constituir una emergencia médica requiere tratamiento inmediato, necesitándose claras pautas de manejoIntroduction: A child with cancer may have an oncologic emergency during one of the following situations: A) Primary manifestation of the disease. B) Diagnostic phase. C) During clinical evolution of the disease. D) Terminal stage. Objective: To review our experience in the management of patients with lymphoma presenting with Superior Vena Cava Syndrome (SVCS). Method: Retrospective analysis of clinical data of 44 patients younger than 15 years-old affected with lymphoma and treated at the Hemathology/Oncology Unit of the Clinical Hospital from Valdivia, between 1989 and 1999. Results: 5 patients presented SVCS; 2 of them had Hodgkin lymphoma and 3 had no-Hodgkin lymphoma. The SVCS was the first clinical manifestation in 4 of them. During the emergency, all patients were treated with steroids and radiotherapy, observing 3 of them still alive and free of disease. Conclusions: The SVCS is a rare complication in pediatric tumoral disease. It constitutes an oncologic emergency that we ought to know in terms of diagnosis and treatment

Miriam Davis G.; Paola Zolezzi R.; Nilda Zumelzu D.

2005-01-01

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Síndrome de vena cava superior: Una emergencia oncológica en niños con linfoma. Revisión de 5 casos/ Superior Vena Cava Syndrome: an oncologic emergency in children with lymphoma  

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Full Text Available Abstract in spanish Introducción: Un niño con cáncer puede presentar durante su enfermedad una emergencia, ya sea como manifestación inicial, en la fase de diagnóstico, durante la evolución o en el periodo terminal. Objetivo: Presentar nuestra experiencia en el manejo del síndrome de Vena Cava Superior en niños con linfoma. Pacientes y Método: Revisión retrospectiva de 44 fichas clínicas de menores de 15 años con linfoma tratados entre enero de 1989 y diciembre de 1999 en la Unid (more) ad de Hematología/Oncología Infantil del Hospital Clínico Regional de Valdivia. Resultados: 5 casos presentaron síndrome de Vena Cava Superior: Linfoma de Hodgkin 2. Linfoma no Hodgkin 3. El síndrome de Vena Cava Superior fue la manifestación inicial en 4. En la emergencia todos los pacientes recibieron corticoides y radioterapia. Tres pacientes se encuentran vivos y en remisión completa. Conclusiones: El síndrome de Vena Cava Superior, es poco frecuente en niños con patología tumoral, sin embargo, por constituir una emergencia médica requiere tratamiento inmediato, necesitándose claras pautas de manejo Abstract in english Introduction: A child with cancer may have an oncologic emergency during one of the following situations: A) Primary manifestation of the disease. B) Diagnostic phase. C) During clinical evolution of the disease. D) Terminal stage. Objective: To review our experience in the management of patients with lymphoma presenting with Superior Vena Cava Syndrome (SVCS). Method: Retrospective analysis of clinical data of 44 patients younger than 15 years-old affected with lymphoma (more) and treated at the Hemathology/Oncology Unit of the Clinical Hospital from Valdivia, between 1989 and 1999. Results: 5 patients presented SVCS; 2 of them had Hodgkin lymphoma and 3 had no-Hodgkin lymphoma. The SVCS was the first clinical manifestation in 4 of them. During the emergency, all patients were treated with steroids and radiotherapy, observing 3 of them still alive and free of disease. Conclusions: The SVCS is a rare complication in pediatric tumoral disease. It constitutes an oncologic emergency that we ought to know in terms of diagnosis and treatment

Davis G., Miriam; Zolezzi R., Paola; Zumelzu D., Nilda

2005-10-01

66

INTRAVASCULAR BLOOD PUMP AND CATHETER  

UK PubMed Central (United Kingdom)

An intravascular system (10, 160) for pumping blood from a chamber of a h eart and through an associated blood vessel coupled in fluid communication t herewith. The system (10, 160) includes a pump device (12, 162) configured t o be inserted into a blood vessel. The system further includes a catheter (1 4, 166) having a proximal end coupled to the pump device (12, 162) and a dis tal end configured to collect blood within or exiting from the chamber. The catheter (14, 166) further includes a pre-formed shape corresponding to the vessel to at least assist with stabilization and positioning of the pump dev ice (12, 162) in the vessel.

MARSEILLE OLIVER; FARNAN ROBERT C

67

Dosimetric model for intravascular brachytherapy  

International Nuclear Information System (INIS)

Full text: Intravascular brachytherapy has been shown to be a prophylaxis for restenosis. Adventitial macrophages, which are extremely radiosensitive, initiate neointima formation. A model of the dose levels of the treatment range is developed, assuming that the adventitia is the target tissue. If the adventitia receives a dose of less than 10 Gy, it is assumed the treatment will be ineffective. If the dose to any part of the wall is above 30 Gy, it is assumed that the treatment could be detrimental. Hence the treatment range is between 10 and 30 Gy, with 20 Gy being the optimum dosage to the adventitia. An algorithm using numerical integration of published dose kernels calculates the dose at any point surrounding a beta (32P) line source of finite length. Dose profiles were obtained to demonstrate edge effects. For long lesions, the source is often stepped along the artery. Dose changes due to separation or overlapping of sources during source stepping procedures were also determined. Isodose curves were superimposed on intravascular ultrasound images to demonstrate dose levels. For an exposure time of 60 seconds with a 200mCi source, the optimum dose of 20 Gy occurs at a distance 1.94mm from the centre of the source. The upper limit of the treatment dose range (30 Gy) occurs at 1.59mm. The lower limit of the treatment dose range (10 Gy) occurs at 2.7mm. Significant perturbations to the treatment dose range can be caused by non-centering of the source, edge effects and separation or overlapping of sources in stepping procedures. Despite these concerns, many successful procedures have been reported and this implies that the model is over simplified and requires modifications. Copyright (2000) Australasian College of Physical Scientists and Engineers in Medicine

2000-01-01

68

Apresentação cutânea inicial de linfomas na infância/ Initial cutaneous manifestation of lymphomas in children  

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Full Text Available Abstract in portuguese Os linfomas cutâneos compreendem um grupo heterogêneo de desordens linfoproliferativas que envolvem a pele e são classificados como um subgrupo dos linfomas não Hodgkin. No período de 1981 a 2007, 100 casos de linfomas em crianças foram admitidos no Serviço de Hematologia, do Hospital das Clínicas da Universidade Federal de Minas Gerais, sendo que nove apresentaram manifestação cutânea inicial. Três pacientes foram classificados como linfoma cutâneo primário (more) e seis como sistêmicos. Sete pacientes apresentaram linfoma de células T, um, linfoma linfoblástico B e um, imunofenótipo indefinido. Nenhum óbito ocorreu nos pacientes com linfoma cutâneo primário Abstract in english Cutaneous lymphomas comprise a heterogeneous group of lymphoproliferative disorders with skin involvement and are classified as a subgroup of non-Hodgkin lymphomas. From 1981 to 2007, 100 children with non-Hodgkin lymphomas were admitted to the Hematology Unit of the Federal University of Minas Gerais Teaching Hospital. In nine of these children, the skin was involved at the onset of the disease. Three patients were classified as having primary cutaneous lymphoma, while i (more) n six the disease was systemic with cutaneous involvement. In seven patients, the immunophenotype was T-cell, in one it was B-cell, and in the remaining case the immunophenotype was indefinable. No deaths occurred in any of the children with primary cutaneous lymphoma

Oliveira, Maria Christina Lopes Araujo de; Pereira, Luciana Baptista; Rodrigues, Priscila Cezarino; Sampaio, Keyla Cunha; Oliveira, Benigna Maria de; Viana, Marcos Borato

2011-08-01

69

Leucemia / linfoma T del adulto: Primer caso en Cuba  

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Full Text Available Abstract in spanish Se presentó el caso de una paciente con diagnóstico de linfoma no Hodgkin de histología agresiva, en el año 1990, que por los hallazgos clínicos y resultados de los exámenes complementarios realizados se sospechó la posibilidad de una leucemia / linfoma tipo T del adulto (LLTA) relacionada con la infección por el virus linfotrópico de células T humanas tipo I (conocido como HTLV-I), lo cual fue confirmado por los resultados de los estudios virológicos. Se obser (more) vó comportamiento evolutivo y respuesta terapéutica tórpidos. Falleció en los primeros 4 meses de efectuado el diagnóstico, lo que corroboró lo publicado en la literatura médica sobre este tema. Este es el primer caso diagnosticado en Cuba de una leucemia / linfoma tipo T del adulto (LLTA) relacionada con la infección por el virus linfotrópico de células T humanas tipo I (HTLV-I) Abstract in english The case of a female patient with diagnosis of non Hodgkin lymphoma of aggressive histology in 1990 was presented .According to the clinical findings and to the results of the complementary tests made, it was suspected the possibility of adult T-cell leukemia/lymphoma (ATLL) related to human T lymphotropic virus type I (HTLV-1) infection, which was confirmed by the results of the virological studies. It was observed a torpid evolutive behavior and therapeutic response. Th (more) e patient died during the first 4 months of the diagnosis, which corroborated what is published in medical literature on this topic.This is the first case diagnosed in Cuba of an adult T-cell leukemia/lymphoma associated with HTLV-1.

Muñío Perurena, Jorge E.; Díaz Torres, Héctor M.; Carnot Uria, José; de Castro Arenas, Raúl; Navea Leyva, Leonor; Rodríguez Reyes, Inocente

2003-06-01

70

Leucemia / linfoma T del adulto: Primer caso en Cuba  

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Full Text Available Se presentó el caso de una paciente con diagnóstico de linfoma no Hodgkin de histología agresiva, en el año 1990, que por los hallazgos clínicos y resultados de los exámenes complementarios realizados se sospechó la posibilidad de una leucemia / linfoma tipo T del adulto (LLTA) relacionada con la infección por el virus linfotrópico de células T humanas tipo I (conocido como HTLV-I), lo cual fue confirmado por los resultados de los estudios virológicos. Se observó comportamiento evolutivo y respuesta terapéutica tórpidos. Falleció en los primeros 4 meses de efectuado el diagnóstico, lo que corroboró lo publicado en la literatura médica sobre este tema. Este es el primer caso diagnosticado en Cuba de una leucemia / linfoma tipo T del adulto (LLTA) relacionada con la infección por el virus linfotrópico de células T humanas tipo I (HTLV-I)The case of a female patient with diagnosis of non Hodgkin lymphoma of aggressive histology in 1990 was presented .According to the clinical findings and to the results of the complementary tests made, it was suspected the possibility of adult T-cell leukemia/lymphoma (ATLL) related to human T lymphotropic virus type I (HTLV-1) infection, which was confirmed by the results of the virological studies. It was observed a torpid evolutive behavior and therapeutic response. The patient died during the first 4 months of the diagnosis, which corroborated what is published in medical literature on this topic.This is the first case diagnosed in Cuba of an adult T-cell leukemia/lymphoma associated with HTLV-1.

Jorge E. Muñío Perurena; Héctor M. Díaz Torres; José Carnot Uria; Raúl de Castro Arenas; Leonor Navea Leyva; Inocente Rodríguez Reyes

2003-01-01

71

Reactive angioendotheliomatosis: is it 'intravascular histiocytosis'?  

Science.gov (United States)

We report the case of a 68-year-old female with reactive angioendotheliomatosis (RAE). This case highlights the benign course of this condition and suggests that this entity might be an intravascular histiocytosis. PMID:15752295

Mensing, C H; Krengel, S; Tronnier, M; Wolff, H H

2005-03-01

72

Reactive angioendotheliomatosis: is it 'intravascular histiocytosis'?  

UK PubMed Central (United Kingdom)

We report the case of a 68-year-old female with reactive angioendotheliomatosis (RAE). This case highlights the benign course of this condition and suggests that this entity might be an intravascular histiocytosis.

Mensing CH; Krengel S; Tronnier M; Wolff HH

2005-03-01

73

Intravascular metastatic melanoma: a difficult diagnosis.  

Science.gov (United States)

Melanoma is a common cancer with the potential for widespread metastasis; however intravascular metastasis is extremely rare. We report an unusual case of a patient with metastatic melanoma in whom (18) F-fluorodeoxyglucose positron emission tomography-computed tomography (FDG PET-CT) demonstrated an intravascular melanoma metastasis in the superior vena cava (SVC), successfully treated with external beam radiotherapy. To our knowledge, this is the first reported case where FDG PET-CT was used to make this diagnosis. PMID:23425235

Ghattas, Samer; Howle, Julie; Wang, Wei; Kefford, Richard; Gruenewald, Simon

2013-02-21

74

Lymphogranuloma venereum and non-Hodgkin lymphoma: a case report/ Linfogranuloma venéreo e linfoma não Hodgkin: um relato de caso  

Scientific Electronic Library Online (English)

Full Text Available Abstract in portuguese Linfogranuloma venéreo (LGV) é uma doença sexualmente transmissível e de ocorrência pouco frequente. Relatamos um caso de um adolescente com 17 anos de idade que apresentou uma lesão ulcerativa vegetante a cerca de dois meses na região inguinal direita. Foi diagnosticado como LGV e o paciente foi tratado com eritromicina. Três meses após o tratamento o paciente apresentou uma nova lesão ulcerativa, muito semelhante à anterior, na região supraclavicular direita (more) . O diagnóstico desta lesão foi de linfoma difuso de células B do tipo não-Hodgkin. Ambas as patologias não são comuns na Cidade do Rio de Janeiro, Brasil e um médico não deve negligenciar a possibilidade da ocorrência de uma doença sexualmente transmissível (DST). Abstract in english Lymphogranuloma venereum (LGV) is an uncommon, contagious, sexually transmitted disease (STD). We report a case of a 17-year-old teenager who presented with a 2-month-old ulcerous vegetant lesion in the right inguinal region. The patient was diagnosed with LGV and received erythromycin treatment. Three months after treatment, he presented with a new ulcerous lesion, very similar to the previous one, in the right supraclavicular region. He was diagnosed with a diffuse larg (more) e B-cell non-Hodgkin lymphoma. Both diseases are rare in Rio de Janeiro City, Brazil, and physicians should not neglect the possibility of STDs in such cases.

Passos, Mauro Romero Leal; Arze, Wilma Nancy Campos; Passos, Felipe Dinau Leal; Faria, Priscilla Frauches Madureira de; Varella, Renata Queiroz; Passos, Mariana Dinau Leal; Ferreira, Dennis de Carvalho

2012-06-01

75

Diffuse large B-cell lymphoma of the oral cavity Linfoma difuso de células B grandes de la cavidad bucal  

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Full Text Available The authors report a case of diffuse large B-cell lymphoma (DLBL) of the oral cavity. The patient was a 73-year-old white man who first presented at the Division of Stomatology with a large nodular mass in the hard palate and a nodular lesion in the upper lip, which were diagnosed as DLBL. The patient was treated with eight cycles of CHOP chemotherapy (cyclophosphamide, doxorubicin, vincristine and prednisone), but the disease recurred 22 months after the end of the therapy. Both primary sites hard palate and upper lip were involved again and the patient was resubmitted to chemotherapy.Se reporta un caso de linfoma difuso de células B grandes (DLBL) de la cavidad bucal. Se trata de un paciente masculino, blanco, de 73 años de edad, que se presentó a la División de Estomatología, con una masa nodular difusa en el paladar duro y una lesión nodular en el labio superior, diagnosticadas como DLBL. El paciente fue tratado con ocho ciclos de quimioterapia CHOP (ciclofosfamida, doxorrubicina, vincristina, prednisona), pero se constató recidiva de la enfermedad en ambos sitios primarios, en el paladar duro y en el labio superior a los 22 meses después del término de la terapia. El paciente fue sometido de nuevo a la quimioterapia.

Marcelo Carlos Bortoluzzi; Jonas Dantas Batista; Karen Cherubini; Fernanda Gonçalves Salum; Maria Antonia Figueiredo

2010-01-01

76

Lymphogranuloma venereum and non-Hodgkin lymphoma: a case report Linfogranuloma venéreo e linfoma não Hodgkin: um relato de caso  

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Full Text Available Lymphogranuloma venereum (LGV) is an uncommon, contagious, sexually transmitted disease (STD). We report a case of a 17-year-old teenager who presented with a 2-month-old ulcerous vegetant lesion in the right inguinal region. The patient was diagnosed with LGV and received erythromycin treatment. Three months after treatment, he presented with a new ulcerous lesion, very similar to the previous one, in the right supraclavicular region. He was diagnosed with a diffuse large B-cell non-Hodgkin lymphoma. Both diseases are rare in Rio de Janeiro City, Brazil, and physicians should not neglect the possibility of STDs in such cases.Linfogranuloma venéreo (LGV) é uma doença sexualmente transmissível e de ocorrência pouco frequente. Relatamos um caso de um adolescente com 17 anos de idade que apresentou uma lesão ulcerativa vegetante a cerca de dois meses na região inguinal direita. Foi diagnosticado como LGV e o paciente foi tratado com eritromicina. Três meses após o tratamento o paciente apresentou uma nova lesão ulcerativa, muito semelhante à anterior, na região supraclavicular direita. O diagnóstico desta lesão foi de linfoma difuso de células B do tipo não-Hodgkin. Ambas as patologias não são comuns na Cidade do Rio de Janeiro, Brasil e um médico não deve negligenciar a possibilidade da ocorrência de uma doença sexualmente transmissível (DST).

Mauro Romero Leal Passos; Wilma Nancy Campos Arze; Felipe Dinau Leal Passos; Priscilla Frauches Madureira de Faria; Renata Queiroz Varella; Mariana Dinau Leal Passos; Dennis de Carvalho Ferreira

2012-01-01

77

Diffuse large B-cell lymphoma of the oral cavity/ Linfoma difuso de células B grandes de la cavidad bucal  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Se reporta un caso de linfoma difuso de células B grandes (DLBL) de la cavidad bucal. Se trata de un paciente masculino, blanco, de 73 años de edad, que se presentó a la División de Estomatología, con una masa nodular difusa en el paladar duro y una lesión nodular en el labio superior, diagnosticadas como DLBL. El paciente fue tratado con ocho ciclos de quimioterapia CHOP (ciclofosfamida, doxorrubicina, vincristina, prednisona), pero se constató recidiva de la enfe (more) rmedad en ambos sitios primarios, en el paladar duro y en el labio superior a los 22 meses después del término de la terapia. El paciente fue sometido de nuevo a la quimioterapia. Abstract in english The authors report a case of diffuse large B-cell lymphoma (DLBL) of the oral cavity. The patient was a 73-year-old white man who first presented at the Division of Stomatology with a large nodular mass in the hard palate and a nodular lesion in the upper lip, which were diagnosed as DLBL. The patient was treated with eight cycles of CHOP chemotherapy (cyclophosphamide, doxorubicin, vincristine and prednisone), but the disease recurred 22 months after the end of the therapy. Both primary sites hard palate and upper lip were involved again and the patient was resubmitted to chemotherapy.

Carlos Bortoluzzi, Marcelo; Dantas Batista, Jonas; Cherubini, Karen; Gonçalves Salum, Fernanda; Figueiredo, Maria Antonia

2010-09-01

78

Pain in an osseous lymphoma. A case presentation. Dolor en el linfoma oseo. Presentación de un caso.  

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Full Text Available This is a 79 year-old, white, male patient suffering from osseous lymphoma, a less frequent illness, came to the university Hospital Dr. Gustavo Aldereguía Lima¨ in Cienfuegos city, Cuba complaining of intercostal pain in the left hemithorax. This pain was not relieved with the regular medical treatment, that´s why the anesthesia service doctors gave assistance. Costal osteolysis at level D7, D8 and D9 were shown in a thorax X ray. He was treated with analgesic through peridural via such as morphine, local anesthetic. Betametasone was used as anti-inflammatory having positive results. The use of ethylic alcohol as agents contributed to the patient´s improvement and to get back to his normal life. Se presenta el caso de un paciente del hospital provincial clínico quirúrgico universitario ¨Dr. Gustavo Aldereguía Lima¨ de Cienfuegos, portador de una enfermedad muy poco frecuente (linfoma óseo), de 79 años de edad, masculino, de raza blanca, que refería dolor intercostal en hemitórax izquierdo, el cual no cedía ante el tratamiento médico habitual, por lo que es atendido por anestesiología. En el rayos X de tórax se apreció osteolisis costal a nivel de D7, D8 y D9. En forma frecuente fue tratado con analgésicos por vía peridural: morfina, anestésicos locales y como antiinflamatorio la betametasona con resultados satisfactorios. El uso de agentes como el alcohol etílico, contribuyó a mejorar su cuadro y a que se incorporara a sus labores habituales.

José Julio Ojeda González; Evangelina Dávila Cabo de Villa; Alexis Guillén Sánchez

79

Pain in an osseous lymphoma. A case presentation. Dolor en el linfoma oseo. Presentación de un caso.  

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Full Text Available This is a 79 year-old, white, male patient suffering from osseous lymphoma, a less frequent illness, came to the university Hospital Dr. Gustavo Aldereguía Lima¨ in Cienfuegos city, Cuba complaining of intercostal pain in the left hemithorax. This pain was not relieved with the regular medical treatment, that´s why the anesthesia service doctors gave assistance. Costal osteolysis at level D7, D8 and D9 were shown in a thorax X ray. He was treated with analgesic through peridural via such as morphine, local anesthetic. Betametasone was used as anti-inflammatory having positive results. The use of ethylic alcohol as agents contributed to the patient´s improvement and to get back to his normal life.  Se presenta el caso de un paciente del hospital provincial clínico quirúrgico universitario ¨Dr. Gustavo Aldereguía Lima¨ de Cienfuegos, portador de una enfermedad muy poco frecuente (linfoma óseo), de 79 años de edad, masculino, de raza blanca, que refería dolor intercostal en hemitórax izquierdo, el cual no cedía ante el tratamiento médico habitual, por lo que es atendido por anestesiología. En el rayos X de tórax se apreció osteolisis costal a nivel de D7, D8 y D9. En forma frecuente fue tratado con analgésicos por vía peridural: morfina, anestésicos locales y como antiinflamatorio la betametasona con resultados satisfactorios. El uso de agentes como el alcohol etílico, contribuyó a mejorar su cuadro y a que se incorporara a sus labores habituales.

José Julio Ojeda González; Evangelina Dávila Cabo de Villa; Alexis Guillén Sánchez

2003-01-01

80

Linfoma Prostático y Revisión de la Literatura/ Prostatic Lymphoma and review of the literature  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish El linfoma prostático es una patología excepcional que suele diagnosticarse como consecuencia de su sintomatomatología prostática o como consecuencia de su invasión por un linfoma extraprostático. Presentamos un caso de un paciente afecto por un linfoma prostático y realizamos una revisión de la literatura, para establecer las pautas diagnósticas y terapéuticas. Abstract in english Prostatic Lymphoma is an exceptional pathology, that usually is diagnosed because its prostatic symthomatology or as consequence of its invasion by an extraprostatic lymphoma. We present a case of a patient affected by a prostatic lymphoma and we perform a review of the literature in order to establish the diagnostic and therapeutic steps.

Rioja Zuazu, Jorge; Iglesias, Rebeca; Rosell Costa, David; Rincón Mayans, Anibal; Brugarolas i Roselló, Xavier; Panizo Santos, Ángel; Berián Polo, José María

2009-06-01

 
 
 
 
81

É possível diferenciar derrames pleurais linfocíticos secundários a tuberculose ou linfoma através de variáveis clínicas e laboratoriais? Differentiating between tuberculosis-related and lymphoma-related lymphocytic pleural effusions by measuring clinical and laboratory variables: Is it possible?  

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Full Text Available OBJETIVO: Descrever características clínicas e laboratoriais em pacientes com derrames pleurais linfocíticos secundários a tuberculose ou linfoma, a fim de identificar as variáveis que possam contribuir no diagnóstico diferencial dessas doenças. MÉTODOS: Estudo retrospectivo com 159 pacientes adultos HIV negativos com derrame pleural linfocítico secundário a tuberculose ou linfoma (130 e 29 pacientes, respectivamente) tratados no Ambulatório da Pleura, Instituto do Coração, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo (SP), entre outubro de 2008 e março de 2010. RESULTADOS: A média de idade e de duração dos sintomas foi menor no grupo tuberculose que no grupo linfoma. Os níveis pleurais de proteínas, albumina, colesterol, amilase e adenosina desaminase (ADA), assim como os níveis séricos de proteínas, albumina e amilase, foram maiores no grupo tuberculose, enquanto os níveis séricos de colesterol e triglicérides foram maiores no grupo linfoma. As contagens de leucócitos e linfócitos no líquido pleural foram maiores no grupo tuberculose. Células malignas estavam ausentes no grupo tuberculose, entretanto, linfócitos atípicos foram observados em 4 desses pacientes. No grupo linfoma, a citologia para células neoplásicas foi positiva, suspeita e negativa em 51,8%, 24,1% e 24,1% dos pacientes, respectivamente. A imunofenotipagem do líquido pleural foi conclusiva na maioria dos pacientes com linfoma. CONCLUSÕES: Nossos resultados demonstram semelhanças clínicas e laboratoriais entre os pacientes com tuberculose ou linfoma. Embora os níveis de proteínas e ADA no líquido pleural tendam a ser mais elevados no grupo tuberculose que no grupo linfoma, mesmo essas variáveis mostraram uma sobreposição. Entretanto, nenhum paciente com tuberculose apresentou níveis de ADA no líquido pleural inferiores ao ponto de corte (40 U/L).OBJECTIVE: To describe clinical and laboratory characteristics in patients with tuberculosis-related or lymphoma-related lymphocytic pleural effusions, in order to identify the variables that might contribute to differentiating between these diseases. METHODS: This was a retrospective study involving 159 adult HIV-negative patients with tuberculosis-related or lymphoma-related lymphocytic effusions (130 and 29 patients, respectively), treated between October of 2008 and March of 2010 at the Pleural Diseases Outpatient Clinic of the University of São Paulo School of Medicine Hospital das Clínicas Heart Institute, in the city of São Paulo, Brazil. RESULTS: Mean age and the mean duration of symptoms were lower in the tuberculosis group than in the lymphoma group. The levels of proteins, albumin, cholesterol, amylase, and adenosine deaminase (ADA) in pleural fluid, as well as the serum levels of proteins, albumin, and amylase, were higher in the tuberculosis group, whereas serum cholesterol and triglycerides were higher in the lymphoma group. Pleural fluid leukocyte and lymphocyte counts were higher in the tuberculosis group. Of the tuberculosis group patients, none showed malignant cells; however, 4 showed atypical lymphocytes. Among the lymphoma group patients, cytology for neoplastic cells was positive, suspicious, and negative in 51.8%, 24.1%, and 24.1%, respectively. Immunophenotyping of pleural fluid was conclusive in most of the lymphoma patients. CONCLUSIONS: Our results demonstrate clinical and laboratory similarities among the patients with tuberculosis or lymphoma. Although protein and ADA levels in pleural fluid tended to be higher in the tuberculosis group than in the lymphoma group, even these variables showed an overlap. However, none of the tuberculosis group patients had pleural fluid ADA levels below the 40-U/L cut-off point.

Leila Antonangelo; Francisco Suso Vargas; Eduardo Henrique Genofre; Caroline Maris Neves de Oliveira; Lisete Ribeiro Teixeira; Roberta Karla Barbosa de Sales

2012-01-01

82

É possível diferenciar derrames pleurais linfocíticos secundários a tuberculose ou linfoma através de variáveis clínicas e laboratoriais?/ Differentiating between tuberculosis-related and lymphoma-related lymphocytic pleural effusions by measuring clinical and laboratory variables: Is it possible?  

Scientific Electronic Library Online (English)

Full Text Available Abstract in portuguese OBJETIVO: Descrever características clínicas e laboratoriais em pacientes com derrames pleurais linfocíticos secundários a tuberculose ou linfoma, a fim de identificar as variáveis que possam contribuir no diagnóstico diferencial dessas doenças. MÉTODOS: Estudo retrospectivo com 159 pacientes adultos HIV negativos com derrame pleural linfocítico secundário a tuberculose ou linfoma (130 e 29 pacientes, respectivamente) tratados no Ambulatório da Pleura, Institut (more) o do Coração, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo (SP), entre outubro de 2008 e março de 2010. RESULTADOS: A média de idade e de duração dos sintomas foi menor no grupo tuberculose que no grupo linfoma. Os níveis pleurais de proteínas, albumina, colesterol, amilase e adenosina desaminase (ADA), assim como os níveis séricos de proteínas, albumina e amilase, foram maiores no grupo tuberculose, enquanto os níveis séricos de colesterol e triglicérides foram maiores no grupo linfoma. As contagens de leucócitos e linfócitos no líquido pleural foram maiores no grupo tuberculose. Células malignas estavam ausentes no grupo tuberculose, entretanto, linfócitos atípicos foram observados em 4 desses pacientes. No grupo linfoma, a citologia para células neoplásicas foi positiva, suspeita e negativa em 51,8%, 24,1% e 24,1% dos pacientes, respectivamente. A imunofenotipagem do líquido pleural foi conclusiva na maioria dos pacientes com linfoma. CONCLUSÕES: Nossos resultados demonstram semelhanças clínicas e laboratoriais entre os pacientes com tuberculose ou linfoma. Embora os níveis de proteínas e ADA no líquido pleural tendam a ser mais elevados no grupo tuberculose que no grupo linfoma, mesmo essas variáveis mostraram uma sobreposição. Entretanto, nenhum paciente com tuberculose apresentou níveis de ADA no líquido pleural inferiores ao ponto de corte (40 U/L). Abstract in english OBJECTIVE: To describe clinical and laboratory characteristics in patients with tuberculosis-related or lymphoma-related lymphocytic pleural effusions, in order to identify the variables that might contribute to differentiating between these diseases. METHODS: This was a retrospective study involving 159 adult HIV-negative patients with tuberculosis-related or lymphoma-related lymphocytic effusions (130 and 29 patients, respectively), treated between October of 2008 and M (more) arch of 2010 at the Pleural Diseases Outpatient Clinic of the University of São Paulo School of Medicine Hospital das Clínicas Heart Institute, in the city of São Paulo, Brazil. RESULTS: Mean age and the mean duration of symptoms were lower in the tuberculosis group than in the lymphoma group. The levels of proteins, albumin, cholesterol, amylase, and adenosine deaminase (ADA) in pleural fluid, as well as the serum levels of proteins, albumin, and amylase, were higher in the tuberculosis group, whereas serum cholesterol and triglycerides were higher in the lymphoma group. Pleural fluid leukocyte and lymphocyte counts were higher in the tuberculosis group. Of the tuberculosis group patients, none showed malignant cells; however, 4 showed atypical lymphocytes. Among the lymphoma group patients, cytology for neoplastic cells was positive, suspicious, and negative in 51.8%, 24.1%, and 24.1%, respectively. Immunophenotyping of pleural fluid was conclusive in most of the lymphoma patients. CONCLUSIONS: Our results demonstrate clinical and laboratory similarities among the patients with tuberculosis or lymphoma. Although protein and ADA levels in pleural fluid tended to be higher in the tuberculosis group than in the lymphoma group, even these variables showed an overlap. However, none of the tuberculosis group patients had pleural fluid ADA levels below the 40-U/L cut-off point.

Antonangelo, Leila; Vargas, Francisco Suso; Genofre, Eduardo Henrique; Oliveira, Caroline Maris Neves de; Teixeira, Lisete Ribeiro; Sales, Roberta Karla Barbosa de

2012-04-01

83

Dosimetric calculus in intravascular brachytherapy; Calculos dosimetricos em braquiterapia intravascular  

Energy Technology Data Exchange (ETDEWEB)

Among the cardiovascular diseases, the most common is acute myocardial infarction, which occurs because of the occlusion of one or more coronary arteries. Balloon angioplasty has been a popular treatment which is less invasive than surgeries involving revascularization of the myocardium, thus promising a better quality of life for patients. Unfortunately, the rate of restenosis (re-closing of the vessel) after balloon angioplasty is high (approximately 30-50% within the first year after treatment). Known as Intravascular Brachytherapy, the technique has been used with several radiation sources, and researchers have obtained success in decreasing the rate of restenosis. In order to study the radiation dosimetry in the patient and radiological protection for this therapy, radiation dose distributions for monoenergetic electrons and photons (at nine discrete energies) were calculated for blood vessels of diameter 0.15, 0.30 and 0.45 cm with balloon and wire sources using the radiation transport code MCNP4B. Specific calculations were carried out for several radionuclides. Two stent sources employing {sup 32}P are also simulated. Advantages and disadvantages of the radionuclides and source geometries are discussed and the dosimetry developed here will aid in the realization of the benefits obtained in patients. (author)

Campos, Laelia Pumilla Botelho; Stabin, Michael Gregory [Pernambuco Univ., Recife, PE (Brazil). Dept. de Energia Nuclear

2000-07-01

84

Diagnóstico de Linfoma no Hodgkin con infiltración intra-auricular/ No Hodgkin Linfoma diagnosis with intra-atrial infiltration  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Los tumores cardíacos, son entidades raras en la práctica médica, tienen una incidencia del 0,05%, aproximadamente el 75% es benigno y un 25% maligno. De estos el linfoma es infrecuente representando alrededor del 0,25%. Los linfomas no Hodgkin pueden ser extranodales en el 20% de los casos, así mismo el 80% de los linfomas no Hodgkin son de células B difusos, que es la forma más frecuente de presentación en adultos jóvenes; corresponden a alto grado de malignidad (more) y crecimiento rápido, pueden presentarse con infiltración primaria a diferentes órganos, con afectación cardiaca en 20 a 28% de los casos y suelen localizarse en las cavidades derechas. Los síntomas son inespecíficos, dependientes de la localización y extensión del tumor y la prueba diagnóstica en estos casos es indudablemente la biopsia ya sea del ganglio linfático o del tejido afectado. Se presenta un caso de linfoma no Hodgkin difuso, de células grandes con afectación intra-auricular derecha, en una paciente de 23 años que debutó con disnea progresiva. Se realizó un ecocardiograma transesofágico que detectó una masa tumoral intra-auricular derecha, por lo que se realizó biopsia por cateterismo venoso por vía femoral, que permitió hacer el diagnóstico histopatológico y establecer el tratamiento, con lo cual se encuentra en primera remisión completa a un año del evento Abstract in english Cardiac tumors are rare entities in clinical practice, with an incidence of 0.05%. Approximately 75% are benign and 25% malignant. Among these, Lymphomas are uncommon, representing about 0.25%. The non-Hodgkin lymphomas can occur in extranodal tissues in 20% of the cases and 80% of these non-Hodgkin lymphomas are composed of diffuse B cells. The extranodal presentation is most frequent in young adults, with a high degree of malignancy and rapid growth. It can present with (more) primary infiltration of various organs; cardiac involvement occurs in 20 to 28% of cases, usually located in the right chambers and with nonspecific symptoms, depending on the location and extent of the tumor. The diagnostic test in these cases is undoubtedly the biopsy of the lymph node or the affected tissue. We present the case of non-Hodgkin disease of diffuse large cells, with right intra-atrial involvement in a 23-year-old-female patient, who presented with progressive dyspnea. A transesophageal echocardiography was performed and an intra-atrial tumor mass was detected. A biopsy was performed, by femoral venous catheterization, allowing the establishment of the histopathological diagnosis and treatment. At a one year follow up, the patient shows complete remission

Alcocer Gamba, Marco Antonio; González, Salvador León; Castro Montes, Eliodoro; Loarca Piña, Luis Martín; Lugo Gavidia, Leslie Marisol; García Hernández, Enrique; González Galindo, Ulises; Paredes Serrano, Miguel Isaías

2012-09-01

85

Diagnóstico de Linfoma no Hodgkin con infiltración intra-auricular No Hodgkin Linfoma diagnosis with intra-atrial infiltration  

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Full Text Available Los tumores cardíacos, son entidades raras en la práctica médica, tienen una incidencia del 0,05%, aproximadamente el 75% es benigno y un 25% maligno. De estos el linfoma es infrecuente representando alrededor del 0,25%. Los linfomas no Hodgkin pueden ser extranodales en el 20% de los casos, así mismo el 80% de los linfomas no Hodgkin son de células B difusos, que es la forma más frecuente de presentación en adultos jóvenes; corresponden a alto grado de malignidad y crecimiento rápido, pueden presentarse con infiltración primaria a diferentes órganos, con afectación cardiaca en 20 a 28% de los casos y suelen localizarse en las cavidades derechas. Los síntomas son inespecíficos, dependientes de la localización y extensión del tumor y la prueba diagnóstica en estos casos es indudablemente la biopsia ya sea del ganglio linfático o del tejido afectado. Se presenta un caso de linfoma no Hodgkin difuso, de células grandes con afectación intra-auricular derecha, en una paciente de 23 años que debutó con disnea progresiva. Se realizó un ecocardiograma transesofágico que detectó una masa tumoral intra-auricular derecha, por lo que se realizó biopsia por cateterismo venoso por vía femoral, que permitió hacer el diagnóstico histopatológico y establecer el tratamiento, con lo cual se encuentra en primera remisión completa a un año del eventoCardiac tumors are rare entities in clinical practice, with an incidence of 0.05%. Approximately 75% are benign and 25% malignant. Among these, Lymphomas are uncommon, representing about 0.25%. The non-Hodgkin lymphomas can occur in extranodal tissues in 20% of the cases and 80% of these non-Hodgkin lymphomas are composed of diffuse B cells. The extranodal presentation is most frequent in young adults, with a high degree of malignancy and rapid growth. It can present with primary infiltration of various organs; cardiac involvement occurs in 20 to 28% of cases, usually located in the right chambers and with nonspecific symptoms, depending on the location and extent of the tumor. The diagnostic test in these cases is undoubtedly the biopsy of the lymph node or the affected tissue. We present the case of non-Hodgkin disease of diffuse large cells, with right intra-atrial involvement in a 23-year-old-female patient, who presented with progressive dyspnea. A transesophageal echocardiography was performed and an intra-atrial tumor mass was detected. A biopsy was performed, by femoral venous catheterization, allowing the establishment of the histopathological diagnosis and treatment. At a one year follow up, the patient shows complete remission

Marco Antonio Alcocer Gamba; Salvador León González; Eliodoro Castro Montes; Luis Martín Loarca Piña; Leslie Marisol Lugo Gavidia; Enrique García Hernández; Ulises González Galindo; Miguel Isaías Paredes Serrano

2012-01-01

86

Contribuição da medicina nuclear para a avaliação dos linfomas  

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Full Text Available A medicina nuclear permite a caracterização funcional de tecidos, acrescentando dados à avaliação anatômica realizada por outros métodos de imagem, como a tomografia computadorizada, ressonância magnética ou ultra-som. Além do diagnóstico e estadiamento, as informações funcionais fornecidas pela medicina nuclear são particularmente úteis no seguimento e avaliação de resposta terapêutica dos pacientes com linfoma. A presença de massa residual após quimioterapia ou a infiltração de linfonodos de pequenas dimensões são exemplos de situações nas quais a avaliação isolada de características anatômicas é insuficiente. Os principais métodos utilizados são a cintilografia com gálio-67, traçador com alta afinidade por transferrina e receptores de ferro, e os estudos com flúor-deoxiglicose, emissor de pósitron que permite a caracterização do metabolismo de glicose nos tecidos. Outros traçadores, como o tálio-201, sestamibi-Tc99m e octreotide-In111, também são utilizados em menor escala na avaliação dos pacientes com linfoma. Os mecanismos de captação, principais indicações dos estudos, limitações e resultados de literatura serão revistos.

Sapienza Marcelo T.; Marone Marília M. S.; Chiattone Carlos S.

2001-01-01

87

Linfoma primario de pene/ Primary lymphoma of penis  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Se describe un caso de linfoma primario de pene en un paciente de 71 años. Se revisa la bibliografía destacando su extrema rareza y las diferentes formas clínicas de presentación. La clínica fue insidiosa, y los datos de la exploración física y los hallazgos ecográficos la hicieron indistinguible de otras neoplasias. La resonancia magnética confirmó la existencia de un proceso neoformativo de densidad homogénea en la parte distal del pene, cuya toma biópsica j (more) unto con las técnicas de inmunohistoquímica confirmó el diagnóstico de linfoma de pene. El tratamiento combinado de quimio y radioterapia permitió conservar el órgano, encontrándose el paciente a los 48 meses libre de enfermedad. Abstract in english We describe a case of primary penis lymphoma in a 71yr old man. We review the bibliography and we emphasize the peculiarity and different sorts of clinical presentation. The initial symptoms were insidious. Physical examination and ultrasound findings made it indistinguishable from other tumors. A MRI confirmed the presence of a tumoral process with a homogeneous density in the distal part of the penis whose biopsy with immune histological processing confirme us the diagn (more) osis of primary penis lymphoma. The combined treatment with chemotherapy and radiotherapy allowed preserving the sexual organ and being without disease at 48 month of follow up.

Ibarz Servio, Lluis; Arzoz Fábregas, Montserrat; Ruiz Domínguez, José M.; Batlle Massana, Montserrat; Mate Sanz, José L.; Saladié Roig, José M.

2009-08-01

88

Actualidad clínica-biológica de los linfomas T cutáneos  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Los linfomas cutáneos resultan modelos útiles para el estudio de los mecanismos patogénicos de las enfermedades linfoproliferativas dado que para el diagnóstico y el seguimiento, las muestras de tejido se obtienen a través de métodos no invasivos. Aunque los linfomas T cutáneos se desarrollan a partir de los linfocitos T residentes en la piel, otras células y diversos factores asociados al tejido linfoide participan en la linfomagénesis. La aparición de estos li (more) nfomas en la piel no excluye la presencia de células malignas en la circulación y su desarrollo en otros órganos. Actualmente, la posibilidad de detectar las lesiones en estadios tempranos y la precisión de alteraciones en el receptor de células T permite ampliar el estudio de esta enfermedad. Abstract in english The cutaneous lymphomas are useful models for studying the etiopathogenic mechanisms of the lymphoproliferative diseases, since the samples of tissue are obtained through non invasive methods for the diagnosis and follow-up. Although the cutaneous T-cell lymphomas are developed from the T lymphocytes existing in the skin, other cells and diverse factors associated with the lymphoid tissues take part in the lymphomagenesis. The appearance of these lymphomas in the skin doe (more) s not exclude the presence of malignant cells in the circulation and their development in other organs. Nowadays, the possibility of detecting the injuries in early stages and the accuracy of alterations in the T-cell receptor allows to extend the study of this disease.

Faxas García, María E.

2003-03-01

89

Dosimetry in intravascular brachytherapy; Calculos dosimetricos em braquiterapia intravascular  

Energy Technology Data Exchange (ETDEWEB)

Among the cardiovascular diseases responsible for deaths in the adult population in almost all countries of the world, the most common is acute myocardial infarction, which generally occurs because of the occlusion of one or more coronary arteries. Several diagnostic techniques and therapies are being tested for the treatment of coronary artery disease. Balloon angioplasty has been a popular treatment which is less invasive than traditional surgeries involving revascularization of the myocardium, thus promising a better quality of life for patients. Unfortunately, the rate of restenosis (re-closing of the vessel) after balloon angioplasty is high (approximately 30-50% within the first year after treatment).Recently, the idea of delivering high radiation doses to coronary arteries to avoid or delay restenosis has been suggested. Known as intravascular brachytherapy, the technique has been used with several radiation sources, and researchers have obtained success in decreasing the rate of restenosis in some patient populations. In order to study the radiation dosimetry in the patient and radiological protection for the attending staff for this therapy, radiation dose distributions for monoenergetic electrons and photons (at nine discrete energies) were calculated for blood vessels of diameter 0.15, o,30 and 0.45 cm with balloon and wire sources using the radiation transport code MCNP4B. Specific calculations were carried out for several candidate radionuclides as well. Two s tent sources (metallic prosthesis that put inside of patient's artery through angioplasty) employing {sup 32} P are also simulated. Advantages and disadvantages of the various radionuclides and source geometries are discussed. The dosimetry developed here will aid in the realization of the benefits obtained in patients for this promising new technology. (author)

Campos, Laelia Pumilla Botelho

2000-03-01

90

The issue of refractory disease in follicular and other lymphoma subtypes A refratariedade no linfoma folicular e em outros linfomas  

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Full Text Available The outcome of lymphoma has definitely improved over the last few decades which is mainly due to the introduction and development of novel and effective therapeutic approaches. Nevertheless, a small though notable group of patients may display a poor response to treatments, with a true refractoriness or a transient response followed by early relapse. The present review addresses the issue of refractory disease among patients with lymphoma, focusing on the overall incidence and the main clinical aspects associated with refractoriness.A evolução dos linfomas tem sido definitivamente melhorada ao longo das últimas décadas. Isto se deve principalmente devido à introdução e desenvolvimento de novas e efetivas abordagens terapêuticas. Apesar disto, uma pequena parcela deste notável grupo de pacientes pode apresentar uma pobre resposta aos tratamentos, com uma verdadeira refratariedade, ou com resposta transitória e precocemente uma recidiva. A presente revisão aborda este assunto da doença refratária nos pacientes com linfoma, enfocando sua incidência global e os principais aspectos clínicos associados à refratariedade.

Marco Ruella; Angela Gueli; Alessandra Risso; Irene Ricca; Daniela Gottardi; Alberto De Crescenzo; Roberto Passera; Marco Ladeto; Corrado Tarella

2009-01-01

91

Linfoma primario del sistema nervioso central en pacientes inmunocompetentes/ Primary central nervous system lymphoma in immunocompetent patients  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish El linfoma primario del sistema nervioso central ha sido informado con frecuencia en pacientes que padecen síndromes de inmuno deficiencia. Sin embargo ésta no es una condición necesaria para su presentación, dado que existen informes de la enfermedad en sujetos inmunológicamente competentes. En el presente trabajo se analizaron en forma retrospectiva, los expedientes de 22 pacientes inmunocompetentes con diagnóstico confirmado de linfoma primario encefálico, se re (more) visó la literatura mundial, con el fin de analizar objetivamente las manifestaciones clínicas, comportamiento radiológico, aspecto histopatológico, dificul tades diagnósticas y terapéuticas, así como las consideraciones pro nósticas. El promedio de edad fue de 65 años y con una relación equitativa hombre/mujer. El tiempo de evolución del cuadro clínico fue de 80.4 días y estuvo dominado por cefalea y déficit neurológico focal. En cuatro pacientes se encontraron lesiones múltiples, mientras que en el resto se trataba de lesiones únicas con localización predominante en la región periventricular de los hemisferios cerebrales. Todos los pacientes fueron manejados inicialmente con esteroides y sometidos a toma de biopsia por estereotaxia. La variedad histológica más frecuente fue la de células grandes difusas y la totalidad de los casos reaccionaron positivamente a antígenos de células B en la inmunohistoquímica. Los 22 pacientes fueron tratados con radio terapia y 10 de ellos además con quimioterapia con metotrexato. La supervivencia promedio fue de 11 meses en los pacientes radiados y de 36 meses en los que se agregó quimioterapia. Abstract in english Primary central nervous system lymphoma has been traditionally described in patients with immunodeficiency syndromes; however, there is an increasing number of immunocompetent patients with this type of tumor that have been reported recently. In this paper we have retrospectively analyzed 22 immunocompetent patients with a confirmed diagnosis of primary lymphoma of the brain. The mean age in this group was 65 years with a similar male/female ratio. The time of evolution o (more) f the clinical course was 80.4 days and it was mainly characterized by headache and focal neurological deficit. In four patients multiple lesions were observed, while the remaining presented single lesions mainly located in the periventricular area of the cerebral hemispheres. All patients were initially administered steroids and a stereotactic biopsy was performed. The majority of tumors were histologically classified as diffuse large cells and all of them showed a positive reaction to B cells antigens on immunohistochemistry. All patients were treated with radiotherapy and in 10 of them, chemotherapy with methotrexate was also indicated. The mean survival rate was 11 months among patients treated with radiotherapy alone and increased to 36 months when chemotherapy was added.

Guinto-Balanzar, Gerardo; Félix-Espinoza, Ignacio; De Anda Ponce-de -León, Salvador; Aréchiga-Ramos, Norma C; Arteaga-Larios, Víctor; Kovacs, Kalman

2005-12-01

92

Obese patient has less intravascular volume. Intravascular volume and fat free mass measured by computed tomography  

International Nuclear Information System (INIS)

It has been difficult to estimate a true patient's intravascular volume. Although about 99% of basic metabolic consumption is conducted in the non-fat tissues, the cardiac index itself does not include a fat effect and may predict inappropriate value in obese patients. This study evaluates the efficacy of the method excluding fat effect using computed tomography imaging to estimate the intra-vascular volume. Fat mass was obtained from the images of computed tomography and fat free mass was calculated by reducing the fat mass from the body weight. Intravascular volume was gained with a dilution method by the records of the cardiopulmonary bypass. Correlation between the fat free mass and the intravascular volume was assessed and statistic analysis was performed. There was a significant correlation between the fat free mass and the intra-vascular volume. Using computed tomography to calculate fat free mass, correlates well with the intravascular volume. Considering the result of this study, the Intra-vascular volume of obese patients would be low, thus the indicated Cardiac index value by Swan-Ganz catheter should be underestimated. (author)

2008-01-01

93

Oral intravascular fasciitis: a rare maxillofacial lesion.  

Science.gov (United States)

Nodular fasciitis is a benign non-neoplastic myofibroblastic proliferation, involving the head in 7% to 20% of cases. Intravascular fasciitis (IVF) is a rare variant, with a unique intravascular growth pattern. Only 4 maxillofacial cases have been previously reported. We describe a 58-year-old woman with a rapidly growing, hard, mobile buccal submucosal swelling. CT scans identified a well-defined, 1.7-cm isodense lesion, located between the mental foramen and masseter muscle, which was excised under general anesthesia. A well-defined cellular nodular mass was composed of bland spindle cells, in a densely vascularized, focally myxoid matrix, involving an arterial lumen, and extending into adjacent tissues. Mitoses were rare. Immunohistochemistry was positive for smooth muscle actin, negative for keratins, S-100, epithelial membrane antigen, caldesmon, p53 and Alk. CD31 and CD34 were positive only in the vascular component, supporting the diagnosis of intravascular fasciitis. PMID:22769420

Reiser, Vadim; Alterman, Michael; Shlomi, Benjamin; Issakov, Josephine; Dagan, Yaniv; Kleinman, Shlomi; Shuster, Amir; Kaplan, Ilana

2012-08-01

94

Oral intravascular fasciitis: a rare maxillofacial lesion.  

UK PubMed Central (United Kingdom)

Nodular fasciitis is a benign non-neoplastic myofibroblastic proliferation, involving the head in 7% to 20% of cases. Intravascular fasciitis (IVF) is a rare variant, with a unique intravascular growth pattern. Only 4 maxillofacial cases have been previously reported. We describe a 58-year-old woman with a rapidly growing, hard, mobile buccal submucosal swelling. CT scans identified a well-defined, 1.7-cm isodense lesion, located between the mental foramen and masseter muscle, which was excised under general anesthesia. A well-defined cellular nodular mass was composed of bland spindle cells, in a densely vascularized, focally myxoid matrix, involving an arterial lumen, and extending into adjacent tissues. Mitoses were rare. Immunohistochemistry was positive for smooth muscle actin, negative for keratins, S-100, epithelial membrane antigen, caldesmon, p53 and Alk. CD31 and CD34 were positive only in the vascular component, supporting the diagnosis of intravascular fasciitis.

Reiser V; Alterman M; Shlomi B; Issakov J; Dagan Y; Kleinman S; Shuster A; Kaplan I

2012-08-01

95

Transplante de células-tronco hematopoéticas em linfoma Hodgkin/ Stem cell transplantation in Hodgkin lymphoma  

Scientific Electronic Library Online (English)

Full Text Available Abstract in portuguese O linfoma Hodgkin(LH) é uma malignidade hematológica que conta com um armamentário terapêutico selecionado de acordo com o estadiamento e a classificação prognóstica de cada doente. A sobrevida dos pacientes tratados para o LH clássico vem aumentando significativamente, com taxas de cura entre 80%-85%. Entretanto, 20%-25% são refratários aos tratamentos iniciais e cerca de 30% recaem após ter alcançado resposta completa. Os pacientes considerados com falha à (more) terapia de primeira linha ainda têm uma segunda chance de cura se apresentarem quimiossensibilidade aos esquemas de salvamento, seguido por uma das modalidades de transplante de células-tronco hematopoéticas (TCTH). O TCTH autólogo representa uma estratégia atrativa para os pacientes com LH que falham ao tratamento convencional de primeira linha. Os resultados em termos de sobrevidas livre de doença e global são superiores aos esquemas de salvamento com quimioterapia convencional. Este procedimento tem finalidade curativa para 50% dos pacientes em segunda remissão quimiossensíveis e pode levar a remissões duráveis naqueles com mais de duas linhas de terapia. Atualmente, o TCTH alogênico, basicamente com condicionamento de intensidade reduzida (RIC), está indicado em pacientes com recaída precoce após o TCTH autólogo ou em pacientes bastante jovens com refratariedade a mais de duas linhas de tratamento convencional. Abstract in english Hodgkin's Lymphoma is a hematologic malignancy with a wide range of therapeutic options that must be chosen according to the stage and the prognostic classification of each patient. The overall survival of patients treated for classic Hodgkin's Lymphoma is increasing significantly, with current cure rates being between 80% and 85%. Nevertheless, 20% to 25% are refractory to the initial treatment and about 30% relapse after having reached a complete response. Patients that (more) have failed standard therapy still have a second chance of cure if they present chemosensitivity to cure schemes, followed by one type of hematopoietic stem cell transplantation (TCTH). Autologous TCTH is an attractive strategy for Hodgkin's Lymphoma patients that fail in the conventional standard therapy. The results in terms of overall survival and disease-free survival are higher than the cure schemes with conventional chemotherapy. This procedure addresses the cure in 50% of chemosensitive patients in second remission, and can lead to lasting remissions for those with more than two lines of treatment. Today, allogeneic TCTH, basically with reduced intensity conditioning (RIC) is indicated for patients with premature relapse after autologous TCTH or for young patients refractory to one or more lines of conventional treatment.

Bittencourt, Rosane I.; Fogliato, Laura; Paz, Alessandra; Souza, Mair P.; Lerner, Decio

2010-05-01

96

Transplante de células-tronco hematopoéticas em linfoma Hodgkin Stem cell transplantation in Hodgkin lymphoma  

Directory of Open Access Journals (Sweden)

Full Text Available O linfoma Hodgkin(LH) é uma malignidade hematológica que conta com um armamentário terapêutico selecionado de acordo com o estadiamento e a classificação prognóstica de cada doente. A sobrevida dos pacientes tratados para o LH clássico vem aumentando significativamente, com taxas de cura entre 80%-85%. Entretanto, 20%-25% são refratários aos tratamentos iniciais e cerca de 30% recaem após ter alcançado resposta completa. Os pacientes considerados com falha à terapia de primeira linha ainda têm uma segunda chance de cura se apresentarem quimiossensibilidade aos esquemas de salvamento, seguido por uma das modalidades de transplante de células-tronco hematopoéticas (TCTH). O TCTH autólogo representa uma estratégia atrativa para os pacientes com LH que falham ao tratamento convencional de primeira linha. Os resultados em termos de sobrevidas livre de doença e global são superiores aos esquemas de salvamento com quimioterapia convencional. Este procedimento tem finalidade curativa para 50% dos pacientes em segunda remissão quimiossensíveis e pode levar a remissões duráveis naqueles com mais de duas linhas de terapia. Atualmente, o TCTH alogênico, basicamente com condicionamento de intensidade reduzida (RIC), está indicado em pacientes com recaída precoce após o TCTH autólogo ou em pacientes bastante jovens com refratariedade a mais de duas linhas de tratamento convencional.Hodgkin's Lymphoma is a hematologic malignancy with a wide range of therapeutic options that must be chosen according to the stage and the prognostic classification of each patient. The overall survival of patients treated for classic Hodgkin's Lymphoma is increasing significantly, with current cure rates being between 80% and 85%. Nevertheless, 20% to 25% are refractory to the initial treatment and about 30% relapse after having reached a complete response. Patients that have failed standard therapy still have a second chance of cure if they present chemosensitivity to cure schemes, followed by one type of hematopoietic stem cell transplantation (TCTH). Autologous TCTH is an attractive strategy for Hodgkin's Lymphoma patients that fail in the conventional standard therapy. The results in terms of overall survival and disease-free survival are higher than the cure schemes with conventional chemotherapy. This procedure addresses the cure in 50% of chemosensitive patients in second remission, and can lead to lasting remissions for those with more than two lines of treatment. Today, allogeneic TCTH, basically with reduced intensity conditioning (RIC) is indicated for patients with premature relapse after autologous TCTH or for young patients refractory to one or more lines of conventional treatment.

Rosane I. Bittencourt; Laura Fogliato; Alessandra Paz; Mair P. Souza; Decio Lerner

2010-01-01

97

Linfoma B difuso de células grandes: factores pronósticos en la era del rituximab/ Diffuse large B cell lymphoma: prognostic factors in the rituximab era  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Introducción: la inclusión del rituximab para el tratamiento del linfoma B difuso de células grandes generó la necesidad de reevaluar los factores pronósticos que se empleaban convencionalmente, y la de explorar otros que podrían resultar útiles para establecer el pronóstico. Objetivo: describir los principales factores clínicos, hematológicos, bioquímicos e inmunohistoquímicos que han sido útiles para el pronóstico en estudios de seguimiento de pacientes co (more) n linfoma B difuso de células grandes tratados con esquemas de quimioterapia que contenían rituximab. Resultados: entre los factores con significancia para el pronóstico se encontraron el Índice Pronóstico Internacional (IPI) revisado, la infiltración de la médula ósea, la presencia de masa voluminosa, la expresión de CD5 y el porcentaje de expresión de Ki-67; en contraste, es controversial la aplicación de otros factores como el IPI convencional, la expresión de Bcl-2, Bcl-6 y el perfil inmunohistoquímico. Abstract in english Introduction: The inclusion of rituximab for treatment of diffuse large B cell lymphoma (DLBCL) generated the need to re-assess the conventionally employed prognostic factors and to explore others that could be useful for prognostic purposes. Objective: To describe the most important clinical, hematological, biochemical and immunohistochemical factors that have been useful for prognostic purposes in follow-up studies of patients with DLBCL treated with chemotherapy plus r (more) ituximab. Results: The following factors were found to have prognostic significance: the revised International Prognostic Index, bone marrow infiltration, the presence of a bulky mass, CD5 expression and the percentage of Ki-67 expression. Contrariwise, the application of other factors remains controversial: conventional IPI, Bcl-2 and Bcl-6 expression, and the immunohistochemical profile.

Guevara Arismendy, Natalia María; Jaramillo Arbeláez, Patricia Elena; Gaviria Jaramillo, Lina María

2013-07-01

98

Linfomas no hodgkinianos agresivos: ¿Después del CHOP sólo el CHOP?  

Directory of Open Access Journals (Sweden)

Full Text Available Los lactatos de deshidrogenasa agresivos incluyen a estos linfomas no hodgkianos difusos de células grandes B (incluida la variante del linfoma B primario del mediastino), los de células grandes anaplásicos T y nulos y los T periféricos. Un índice pronóstico internacional fue creado e incluye la edad, sus niveles séricos de lactato de deshidrogenasa performance status y la afectación extranodal. El esquema CHOP se considera la regla de oro de los LNH agresivos, tanto esta patología limitada como avanzada. Los pacientes con patología diseminada tienen índices de curabilidad menor de un 40 % por lo que se ensayan múltiples estrategias terapéuticas para mejorar estos resultados, dentro de éstas se ha demostrado que es posible escalar la dosis de los fármacos pilares en el esquema CHOP, hasta aproximadamente el doble del estándar con una toxicidad aceptada y mejores respuestas.The aggressive NHLs (non-Hodgkin lymphomas) comprise the diffuse large B-cell NHLs (including the variant of primary mediastinal B-cell lymphoma), the anaplastic and null large T-cell lymphomas and the peripheral T-cell lymphomas. An international prognostic index was created taking into account age, serum levels of LDH, Performance Status and extranodal affection. The CHOP scheme is considered as the gold standard of those non-Hodgkin’s lymphoma of aggressive histology, both in limited and advanced disease. Patients with disseminated disease have curability indexes under 40 %, so multiple therapeutic strategies are being tested to improve these results. It has been found that it is possible to increase the dose of the main drugs in the CHOP schemes up to approximately the double of the standard with an accepted toxicity and better responses.

Fernando Areces Delgado; Delvys Rodríguez Abreu

2003-01-01

99

Linfomas no hodgkinianos agresivos: ¿Después del CHOP sólo el CHOP?  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Los lactatos de deshidrogenasa agresivos incluyen a estos linfomas no hodgkianos difusos de células grandes B (incluida la variante del linfoma B primario del mediastino), los de células grandes anaplásicos T y nulos y los T periféricos. Un índice pronóstico internacional fue creado e incluye la edad, sus niveles séricos de lactato de deshidrogenasa performance status y la afectación extranodal. El esquema CHOP se considera la regla de oro de los LNH agresivos, ta (more) nto esta patología limitada como avanzada. Los pacientes con patología diseminada tienen índices de curabilidad menor de un 40 % por lo que se ensayan múltiples estrategias terapéuticas para mejorar estos resultados, dentro de éstas se ha demostrado que es posible escalar la dosis de los fármacos pilares en el esquema CHOP, hasta aproximadamente el doble del estándar con una toxicidad aceptada y mejores respuestas. Abstract in english The aggressive NHLs (non-Hodgkin lymphomas) comprise the diffuse large B-cell NHLs (including the variant of primary mediastinal B-cell lymphoma), the anaplastic and null large T-cell lymphomas and the peripheral T-cell lymphomas. An international prognostic index was created taking into account age, serum levels of LDH, Performance Status and extranodal affection. The CHOP scheme is considered as the gold standard of those non-Hodgkin?s lymphoma of aggressive histology, (more) both in limited and advanced disease. Patients with disseminated disease have curability indexes under 40 %, so multiple therapeutic strategies are being tested to improve these results. It has been found that it is possible to increase the dose of the main drugs in the CHOP schemes up to approximately the double of the standard with an accepted toxicity and better responses.

Areces Delgado, Fernando; Rodríguez Abreu, Delvys

2003-03-01

100

Linfoma metastásico cardíaco/ Metastatic Cardiac Lymphoma/ Metastatic Cardiac Lymphoma  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Los tumores cardíacos secundarios o metastásicos son unas 20-40 veces más comunes que los primitivos benignos y malignos. Las neoplasias que con más frecuencia producen metástasis en el corazón son los carcinomas pulmonares, los de mama, los melanomas malignos y, en una proporción menor, las leucosis y los linfomas. En esta presentación se describe el caso de una paciente femenina, de 36 años, con síntomas cardiovasculares de arritmia y síncope y evidencia ecoc (more) ardiográfica de tumor cardíaco de crecimiento acelerado. Debido al agravamiento de las manifestaciones clínicas, se inició tratamiento con esteroides sistémicos, con el que experimentó mejoría clínica en las primeras 72 horas. Esto llevó a enfocar el diagnóstico en una causa secundaria de invasión cardíaca. Los hallazgos histopatológicos de una biopsia gástrica evidenciaron la presencia de un linfoma no Hogdkin. Se inició el tratamiento citostático específico; la paciente se encuentra en remisión y con regresión total de sus síntomas cardiovasculares. En nuestra paciente llama la atención la forma de presentación de los síntomas, que estuvieron limitados a la esfera cardiovascular pese a la localización en el sistema digestivo del tumor primario. Abstract in english Secondary or metastatic cardiac tumors are 20 to 40 times more common than primary benign or malignant neoplasms. Lung and breast carcinoma, malignant melanoma, and, to a lesser degree, leukemia and lymphoma, often metastasize to the heart. We describe the case of a 36-year old female patient with arrhythmia and echocardiographic evidence of a rapidly growing heart tumor. Treatment with systemic corticosteroids was initiated due to symptoms aggravation and the patient imp (more) roved within 72 hours. A metastatic tumor was then suspected. A gastric biopsy confirmed the presence of a non-Hodgkin lymphoma. Specific cytostatic treatment was started; the patient remains in remission with complete regression of cardiovascular symptoms. Interestingly, our patient presented only cardiovascular symptoms despite the primary tumor was located in the digestive system.

Hechavarría Pouymiró, Sheila; Marrero Mederos, Roberto; Valiente Mustelier, Juan; Cabrera, Francisco

2011-04-01

 
 
 
 
101

Linfomas asociados a infección por VIH en pacientes del Hospital Clínico San Borja Arriarán / Fundación Arriarán2001-2008 Lymphomas associated with HIV infection in patients at the Hospital San Borja Arriarán /Fundación Arriarán 2001-2008, Santiago, Chile  

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Full Text Available Introducción: Los linfomas de Hodgkin (LH) y no Hodgkin (LNH) se asocian con alta frecuencia al síndrome de inmunodeficiencia humana en adultos. Objetivo: Sistematizar los aspectos clínicos e histológicos de los linfoma que afectan a pacientes con SIDA, su tratamiento y resultados globales en nuestra institución. Pacientes y Métodos: Análisis retrospectivo de pacientes con linfoma asociado a VIH entre enero de 2001 y diciembre de 2008 en el complejo hospitalario San Borja Arriarán. Resultados: Se obtuvo información de 30 pacientes con LNH y 7 LH, con una mediana de 40 años. Los tipos histológicos predominantes fueron linfoma de Burkitt (47 %), linfoma difuso de células grandes de estirpe B (37 %) y LNH de estirpe T (10%). No se diagnosticaron LNH del SNC ni linfoma de cavidades. Casi la totalidad de los pacientes (86,7%) con LNH se trataron con esquema CHOP, 57% de quienes recibieron tratamiento presentaron progresión o recaída desde remisión completa, ofreciéndoles una quimioterapia de rescate a cuatro pacientes. El 73% de los pacientes que recibieron CHOP lograron completar entre cinco y seis ciclos de quimioterapia. El uso de quimioterapia CHOP para el subgrupo de pacientes con linfoma de Burkitt alcanzó bajos porcentajes de remisión completa y mayoritariamente progresó la enfermedad, siendo esta quimioterapia, inefectiva para mejorar la sobrevida, especialmente en los pacientes de riesgo alto. Se encontraron diferencias estadísticamente significativas en sobrevida según el IPIae (índice internacional pronóstico ajustado por edad) al ingreso. Conclusión: El LNH en los pacientes con VIH tratados con los protocolos de quimioterapia PANDA persiste en nuestro medio como una enfermedad de muy mal pronóstico comparado con los resultados en la literatura internacional. La incorporación de nuevos fármacos de demostrada utilidad como rituximab y esquemas específicos de quimioterapia podrían mejorar estos resultados. El establecimiento de grupos pronósticos establecidos por IPIae puede orientar el trabajo clínico para el uso de quimioterapia ajustada a su riesgo específico y optimizado según tipo histológico.Introduction: Hodgkin lymphomas (HL) and non Hodgkin lymphomas (NHL) are frequently associated to acquired immunodeficiency syndrome in adults. Objective: To systematize the clinical features and histological characteristics of lymphomas in AIDS patients, its treatment and outcomes in our institution. Patients and Methods: Retrospective analysis of patients with HIV-associated lymphoma between January 2001 and December 2008 at the San Borja Arriarán Hospital complex. Results: Information was obtained from 30 patients with NHL and 7 with HL, with a median of 40 years. The majority of tumors were Burkitt lymphoma (47%), diffuse large cell lymphoma B-cell (37%) and NHL of T lineage (10%). There was no CNS or cavities lymphoma. Almost all patients (86.7%) with NHL were treated with CHOP chemotherapy, 57% of those receiving treatment had progression or relapse from complete remission. A rescue chemotherapy was indicated in 4 patients. 73% of patients receiving CHOP, complete 5 to 6 cycles of chemotherapy. The use of CHOP chemotherapy for the subgroup of patients with Burkitt lymphoma achieved low rates of complete remission and frequent relapse and disease progression, showing that CHOP was ineffective in improving survival, especially in high risk patients. We found statistically significant differences in survival according to IPIae (International prognostic Index age-adjusted). Conclusion: Non-Hodgkin lymphoma in HIV patients treated with chemotherapy protocols PAlNDA persists in our environment as a disease with a poor prognosis compared with findings in the international literature. The incorporation of new drugs of proven utility as rituximab and specific schemes chemotherapy could improve these results. The establishment of prognostic groups established by IPIae can guide clinical work for the use of chemotherapy tailored to their specific risk and optimized according

Álvaro Pizarro; Hernán García; Ana Riquelme; Javiera Carmona; Claudia Cortés

2013-01-01

102

Linfomas asociados a infección por VIH en pacientes del Hospital Clínico San Borja Arriarán / Fundación Arriarán2001-2008/ Lymphomas associated with HIV infection in patients at the Hospital San Borja Arriarán /Fundación Arriarán 2001-2008, Santiago, Chile  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Introducción: Los linfomas de Hodgkin (LH) y no Hodgkin (LNH) se asocian con alta frecuencia al síndrome de inmunodeficiencia humana en adultos. Objetivo: Sistematizar los aspectos clínicos e histológicos de los linfoma que afectan a pacientes con SIDA, su tratamiento y resultados globales en nuestra institución. Pacientes y Métodos: Análisis retrospectivo de pacientes con linfoma asociado a VIH entre enero de 2001 y diciembre de 2008 en el complejo hospitalario Sa (more) n Borja Arriarán. Resultados: Se obtuvo información de 30 pacientes con LNH y 7 LH, con una mediana de 40 años. Los tipos histológicos predominantes fueron linfoma de Burkitt (47 %), linfoma difuso de células grandes de estirpe B (37 %) y LNH de estirpe T (10%). No se diagnosticaron LNH del SNC ni linfoma de cavidades. Casi la totalidad de los pacientes (86,7%) con LNH se trataron con esquema CHOP, 57% de quienes recibieron tratamiento presentaron progresión o recaída desde remisión completa, ofreciéndoles una quimioterapia de rescate a cuatro pacientes. El 73% de los pacientes que recibieron CHOP lograron completar entre cinco y seis ciclos de quimioterapia. El uso de quimioterapia CHOP para el subgrupo de pacientes con linfoma de Burkitt alcanzó bajos porcentajes de remisión completa y mayoritariamente progresó la enfermedad, siendo esta quimioterapia, inefectiva para mejorar la sobrevida, especialmente en los pacientes de riesgo alto. Se encontraron diferencias estadísticamente significativas en sobrevida según el IPIae (índice internacional pronóstico ajustado por edad) al ingreso. Conclusión: El LNH en los pacientes con VIH tratados con los protocolos de quimioterapia PANDA persiste en nuestro medio como una enfermedad de muy mal pronóstico comparado con los resultados en la literatura internacional. La incorporación de nuevos fármacos de demostrada utilidad como rituximab y esquemas específicos de quimioterapia podrían mejorar estos resultados. El establecimiento de grupos pronósticos establecidos por IPIae puede orientar el trabajo clínico para el uso de quimioterapia ajustada a su riesgo específico y optimizado según tipo histológico. Abstract in english Introduction: Hodgkin lymphomas (HL) and non Hodgkin lymphomas (NHL) are frequently associated to acquired immunodeficiency syndrome in adults. Objective: To systematize the clinical features and histological characteristics of lymphomas in AIDS patients, its treatment and outcomes in our institution. Patients and Methods: Retrospective analysis of patients with HIV-associated lymphoma between January 2001 and December 2008 at the San Borja Arriarán Hospital complex. Res (more) ults: Information was obtained from 30 patients with NHL and 7 with HL, with a median of 40 years. The majority of tumors were Burkitt lymphoma (47%), diffuse large cell lymphoma B-cell (37%) and NHL of T lineage (10%). There was no CNS or cavities lymphoma. Almost all patients (86.7%) with NHL were treated with CHOP chemotherapy, 57% of those receiving treatment had progression or relapse from complete remission. A rescue chemotherapy was indicated in 4 patients. 73% of patients receiving CHOP, complete 5 to 6 cycles of chemotherapy. The use of CHOP chemotherapy for the subgroup of patients with Burkitt lymphoma achieved low rates of complete remission and frequent relapse and disease progression, showing that CHOP was ineffective in improving survival, especially in high risk patients. We found statistically significant differences in survival according to IPIae (International prognostic Index age-adjusted). Conclusion: Non-Hodgkin lymphoma in HIV patients treated with chemotherapy protocols PAlNDA persists in our environment as a disease with a poor prognosis compared with findings in the international literature. The incorporation of new drugs of proven utility as rituximab and specific schemes chemotherapy could improve these results. The establishment of prognostic groups established by IPIae can guide clinical work for the use of chemotherap

Pizarro, Álvaro; García, Hernán; Riquelme, Ana; Carmona, Javiera; Cortés, Claudia

2013-02-01

103

Interventional and intravascular MR angiography  

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Magnetic resonance imaging (MRI) has a number of characteristics which make it attractive for guidance of intravascular therapeutic procedures, including high soft tissue contrast, imaging in any arbitrary oblique plane, lack of ionizing radiation, and the ability to provide functional information, such as flow velocity and volume per unit time. For MR guidance of vascular interventions to be safe, catheters and guidewires must be visualized relative to the vascular system and surrounding tissues. A number of approaches for making instruments visible in an MR environment are presented, including both passive and active techniques. Passive techniques depend on contrast agents or susceptibility artifacts, whereas active techniques, including MR tracking, MR profiling, and active field inhomogeneity, use some form of electrical coil built into the instrument. The potential for obtaining high-resolution images of the vessel wall using coils built into a catheter is also discussed. These images provide the capability to distinguish and identify various plaque components. The additional capabilities of MRI could potentially open up new applications beyond those currently performed under X-ray fluoroscopic guidance. (orig.) [German] Die magnetresonanztomographische (MRT) Bildgebung wird durch einige Merkmale charakterisiert, die sie fuer die Ueberwachung und Steuerung intravaskulaerer Interventionen besonders attraktiv macht: hervorragender Weichteilkontrast, beliebige Schnittfuehrung im dreidimensionalen Raum, fehlende ionisierende Strahlung, die eine beliebige Wiederholung von Bildakquisitionen erlaubt, sowie die Moeglichkeit, zusaetzlich zu den morphologischen Daten mittels Phasenkontrastmethoden funktionelle Informationen zu sammeln (zum Beispiel Flussgeschwindigkeit oder Flussvolumen pro Zeiteinheit vor und nach einer Intervention). Um die Sicherheit der Durchfuehrung von vaskulaeren Interventionen mittels MRT zu gewaehrleisten, muessen die Gefaesse selbst, aber auch die Katheter und Fuehrungsdraehte in Relation zu den Gefaessen und der Umgebung gut sichtbar sein. Mit kontrastverstaerkten dreidimensionalen Akquisitionen kann das arterielle Gefaesssystem in diagnostischer Qualitaet dargestellt werden. Zur Visualisierung von intravaskulaer gefuehrten Instrumenten in der MRT koennen verschiedene Methoden eingesetzt werden. Diesen Methoden liegt entweder eine passive oder eine aktive Visualisierung zugrunde. Die passiven Techniken basieren auf einer Fuellung oder Beschichtung des Instruments mit Kontrastmitteln oder auf inhaerenten Suszeptibilitaetsartefakten durch das Herstellungsmaterial, welche das Instrument innerhalb des akquirierten Bildes mit einem hohen Kontrast zur Umgebung sichtbar werden lassen. Leider ist die Sichtbarkeit der Instrumente nicht unter allen Umstaenden gewaehrleistet. Deshalb wurden aktive Methoden entwickelt, die den Kontrast auch unter nicht optimalen Bildgebungsbedingungen gewaehrleisten. Saemtliche aktiven Techniken, wie das MR-Tracking, das MR-Profiling oder die Erzeugung einer aktiven Feldinhomogenitaet des Instruments, basieren auf dem Einbau von kleinen Spulen in das Instrument selbst. Derartige Spulen dienen nicht nur zur Ortung und Fuehrung eines Katheters oder Fuehrungsdrahts, sondern haben auf der anderen Seite auch zusaetzlich das Potential, hoch aufloesende Bilder von der Ge-faesswand zu akquirieren. Anhand dieser Bilder ist eine Cha-rakterisierung der verschiedenen Plaquekomponenten moeglich. (orig.)

Ladd, M.E.; Debatin, J.F. [Zentralinstitut fuer Roentgendiagnostik, Universitaetsklinikum Essen (Germany)

2000-06-01

104

Intravascular fasciitis of the lower lip.  

UK PubMed Central (United Kingdom)

Intravascular fasciitis is a rare, unusual variant of nodular fasciitis. It most commonly involves the head and neck, upper extremity, lower extremity, and trunk. Only 4 cases involving the oral cavity have been reported previously in the literature. Here we present an additional case with a review of the literature.

Seo BF; Kim DJ; Kim SW; Lee JH; Rhie JW; Ahn ST

2013-05-01

105

Intravascular volume after aneurysmal subarachnoid hemorrhage  

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Intravascular volume after aneurysmal subarachnoid hemorrhage A subarachnoid hemorrhage (SAH) from a ruptured cerebral aneurysm is a devastating disorder with an often poor prognosis. The occurrence of delayed cerebral ischemia (DCI) is one of the most important factors determining outcome in patien...

Hoff, R.G.

106

Frequency and colonization rate of intravascular catheters  

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Full Text Available Clinical signs are not sufficiently reliable for establishing diagnosis of intravascular catheter-related infection. Therefore, microbiological confirmation, based on the culture of the catheter tip after its removal, is necessary in diagnosing the infection. The aim of this study was to determine the frequency and the degree of microbial colonization of intravascular catheters (IVK), and the risk for the onset of sepsis, by using qualitative, semiquantitative (roll plate) and quantitative (vortexing) catheter culture techniques. During the period April 2001 December 2002, 289 intravascular catheters were cultured. A total of 284 microorganisms were isolated from 217 (75%) culture-positive catheters. The frequency of isolation of some organisms was the following coagulase-negative staphylococci (CNS) 41%, Staphylococcus aureus 19% Enterococci spp 6%, other Gram-positive microorganisms 9%, Gram-negative microorganisms 21%, and fungi 4%. In 35 catheters, cultures were polymicrobial; two microorganisms were found in 25 cultures and three were found to be in 10 cultures. There were 122 (46%) intravascular catheters which were found significantly colonized. A high rate of positivity and a high rate of S. aureus isolates and Gram-negative bacteria indicate the need of establishing the exact microbiological diagnosis of these infections, and the rigorous undertaking of adequate control and preventive measures.

Tomanovi? Branka; Mirovi? Veljko

2004-01-01

107

Disseminated intravascular coagulation and facial injury.  

UK PubMed Central (United Kingdom)

A severe case of disseminated intravascular coagulation secondary to a road traffic accident in a pregnant woman is presented. The nature of this recognised complication of pregnancy is noted, and the problems encountered when it occurs together with facial trauma, are described. The importance of awareness and recognition of this condition is emphasised.

Samman N

1984-08-01

108

Abscesso cerebelar tratado clinicamente: relato de caso  

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Full Text Available Apresentamos um caso de abscesso cerebelar secundário a otite média crônica, localizado no hemisfério cerebelar direito, em uma paciente pediátrica, que foi tratado clinicamente. Obtendo resolução sem necessidade de cirurgia. A antibioticoterapia foi escolhida segundo critérios da literatura para os agentes etiológicos mais prováveis. Discutimos a patogênese, histopatogênese, o quadro clínico, o diagnóstico e as formas de tratamento dos abscessos do sistema nervoso central.

Vialogo Josué Guimarães Granha; Sanches Maria Cristina Arrua

2001-01-01

109

Linfoma do sistema nervoso central: ensaio iconográfico/ Central nervous system lymphoma: iconographic essay  

Scientific Electronic Library Online (English)

Full Text Available Abstract in portuguese Ilustramos este ensaio iconográfico de linfoma do sistema nervoso central com imagens de ressonância magnética obtidas em nosso serviço nos últimos 13 anos e discutimos algumas das principais características radiológicas deste tipo de linfoma, primário e secundário. O linfoma sistema nervoso central é um tumor relativamente infrequente, mas alguns achados na ressonância magnética podem sugerir este diagnóstico. Abstract in english The authors illustrate the present pictorial essay about central nervous system lymphoma with magnetic resonance images obtained in their institution over the past 13 years. Some of the main radiological findings in primary and secondary presentations of this type of lymphoma are discussed. Central nervous system lymphoma is a relatively uncommon tumor, but magnetic resonance imaging findings may suggest the diagnosis.

Reis, Fabiano; Schwingel, Ricardo; Nascimento, Felipe Barjud Pereira do

2013-04-01

110

Linfoma do sistema nervoso central: ensaio iconográfico Central nervous system lymphoma: iconographic essay  

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Full Text Available Ilustramos este ensaio iconográfico de linfoma do sistema nervoso central com imagens de ressonância magnética obtidas em nosso serviço nos últimos 13 anos e discutimos algumas das principais características radiológicas deste tipo de linfoma, primário e secundário. O linfoma sistema nervoso central é um tumor relativamente infrequente, mas alguns achados na ressonância magnética podem sugerir este diagnóstico.The authors illustrate the present pictorial essay about central nervous system lymphoma with magnetic resonance images obtained in their institution over the past 13 years. Some of the main radiological findings in primary and secondary presentations of this type of lymphoma are discussed. Central nervous system lymphoma is a relatively uncommon tumor, but magnetic resonance imaging findings may suggest the diagnosis.

Fabiano Reis; Ricardo Schwingel; Felipe Barjud Pereira do Nascimento

2013-01-01

111

Classificação dos linfomas não-Hodgkin: estudo morfológico e imunoistoquímico de 145 casos  

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Full Text Available A classificação dos linfomas não-Hodgkin tem sido, ao longo dos últimos trinta anos, motivo de controvérsia. Várias classificações têm sido propostas em busca de um consenso entre patologistas e clínicos. Este trabalho teve como objetivo analisar criticamente três destas classificações através do estudo retrospectivo de 145 casos de linfomas primários de gânglio linfático selecionados do Serviço de Anatomia Patológica do Hospital Universitário Clementino Fraga Filho, entre 1979 e 1995. Os casos revistos foram classificados pelas propostas da Working Formulation, de Kiel e da Real. Testes imunoistoquímicos com os anticorpos anti-CD45, anti-CD20, anti-CD45RO e anti-CD30 foram realizados. Cento e sete casos (73,7%) apresentaram fenótipo B; 33 casos (22,7%), fenótipo T; e quatro casos foram nulos (linfoma anaplásico de grandes células). Foi possível prever o fenótipo pela morfologia em 89,4% dos casos. Os linfomas de alto grau predominaram (59,2%), sendo o linfoma centroblástico o de maior freqüência (31,7% ). Os linfomas foliculares representaram 29 casos (20%), com maior incidência dos de grandes células (31%) do que dos de pequenas células (27,5%). Quando comparadas as três classificações, observamos que determinados grupos da Working Formulation abrigam múltiplas entidades. Isto se deve ao fato de a classificação da Working Formulation ser baseada somente em achados morfológicos e, por isso, deve ter seu uso desaconselhado. Já a classificação de Kiel e a da Real devem ter o seu emprego estimulado, pois apresentam, além de uma boa análise histopatológica, um estudo imunológico que define entidades biológicas correlacionando-se, quando possível, com a célula de origem.

Milito Cristiane Bedran; Morais José Carlos; Nucci Márcio; Pulcheri Wolmar; Spector Nelson

2002-01-01

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Techniques for intravascular foreign body retrieval.  

UK PubMed Central (United Kingdom)

As endovascular therapies increase in frequency, the incidence of lost or embolized foreign bodies is increasing. The presence of an intravascular foreign body (IFB) is well recognized to have the potential to cause serious complications. IFB can embolize and impact critical sites such as the heart, with subsequent significant morbidity or mortality. Intravascular foreign bodies most commonly result from embolized central line fragments, but they can originate from many sources, both iatrogenic and noniatrogenic. The percutaneous approach in removing an IFB is widely perceived as the best way to retrieve endovascular foreign bodies. This minimally invasive approach has a high success rate with a low associated morbidity, and it avoids the complications related to open surgical approaches. We examined the characteristics, causes, and incidence of endovascular embolizations and reviewed the various described techniques that have been used to facilitate subsequent explantation of such materials.

Woodhouse JB; Uberoi R

2013-08-01

113

Intravascular probe for detection of vulnerable plaque.  

UK PubMed Central (United Kingdom)

PURPOSE: Coronary angiography defines geometry of lumen of artery. However, perhaps 70% of heart attacks occur when minimally obstructive thin capped fibroatheroma rupture, causing thrombus and arterial occlusion. We have developed an intravascular imaging detector to identify vulnerable coronary artery plaque. PROCEDURE: Detector measures beta or conversion electron emissions from plaque-binding radiotracers. Detector assembly fits into a 2-mm diameter catheter and overcomes technical constraints of size, sensitivity, and conformance to intravascular environment. RESULTS: Device was tested by stepping test point sources past detector to verify function. System resolution is 6.7 mm and sensitivity is 400 cps/microCi one mm from detector. CONCLUSION: This prototype is a first step in imaging of labeled vulnerable plaque in coronary arteries. This type of system may assist in development of targeted and cost effective therapies to lower incidence of acute coronary artery diseases (CAD) such as unstable angina, acute myocardial infarction, and sudden cardiac death.

Janecek M; Patt BE; Iwanczyk JS; MacDonald L; Yamaguchi Y; William Strauss H; Tsugita R; Ghazarossian V; Hoffman EJ

2004-05-01

114

MALT-linfoma de cérvix: reporte de caso  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Los linfomas MALT de cérvix son de muy rara presentación. Se reporta el caso de una paciente de 38 años con neoplasia linfoproliferativa detectada incidentalmente en los cortes de rutina, durante el estudio anátomo-patológico de espécimen de resección producto de histerectomía total, motivada por hallazgos ecográficos compatibles con miomatosis en cuerpo uterino. La etiología de esta neoplasia está asociada a procesos infecciosos o autoinmunes, se ha descrito alta radiosensibilidad y quimiosensibilidad a la biotera-pia contra anticuerpos CD20. Abstract in english The MALT-lymphomas of cervix are of very rare presentation. This is the case of a 38 years old patient in which this linfoproliferative disorder was detected incidentally in the routine cuts, during the anatomo-pathological study of a resection specimen product of total hysterectomy motivated by ecographic findings that were compatible with myomatosis of the uterine corpus. The etiology of these tumors is associated with infectious or autoimmune processes, and high radiosensitivity and chemosensitivity to biotherapy against antibodies CD20 (rituximab) has been described.

Benedetti P, Inés; Barrios G, Lía; Contreras B, Eusebio

2012-01-01

115

MALT-linfoma de cérvix: reporte de caso  

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Full Text Available Los linfomas MALT de cérvix son de muy rara presentación. Se reporta el caso de una paciente de 38 años con neoplasia linfoproliferativa detectada incidentalmente en los cortes de rutina, durante el estudio anátomo-patológico de espécimen de resección producto de histerectomía total, motivada por hallazgos ecográficos compatibles con miomatosis en cuerpo uterino. La etiología de esta neoplasia está asociada a procesos infecciosos o autoinmunes, se ha descrito alta radiosensibilidad y quimiosensibilidad a la biotera-pia contra anticuerpos CD20.The MALT-lymphomas of cervix are of very rare presentation. This is the case of a 38 years old patient in which this linfoproliferative disorder was detected incidentally in the routine cuts, during the anatomo-pathological study of a resection specimen product of total hysterectomy motivated by ecographic findings that were compatible with myomatosis of the uterine corpus. The etiology of these tumors is associated with infectious or autoimmune processes, and high radiosensitivity and chemosensitivity to biotherapy against antibodies CD20 (rituximab) has been described.

Inés Benedetti P; Lía Barrios G; Eusebio Contreras B

2012-01-01

116

METHODS FOR INTRAVASCULARLY-INDUCED NEUROMODULATION  

UK PubMed Central (United Kingdom)

Methods and apparatus are provided for intravascularly-induced neuromodulation using a pulsed electric field, e.g., to effectuate irreversible electroporation or electrofusion, necrosis and/or inducement of apoptosis, alteration of gene expression, changes in cytokine upregulation, etc., in target neural fibers. In some embodiments, the intravascular PEF system comprises a catheter having a pair of bipolar electrodes for delivering the PEF, with a first electrode positioned on a first side of an impedance-altering element and a second electrode positioned on an opposing side of the impedance-altering element. A length of the electrodes, as well as a separation distance between the first and second electrodes, may be specified such that, with the impedance-altering element deployed in a manner that locally increases impedance within a patient's vessel, e.g., with the impedance-altering element deployed into contact with the vessel wall at a treatment site within the patient's vasculature, a magnitude of applied voltage delivered across the bipolar electrodes necessary to achieve desired neuromodulation is reduced relative to an intravascular PEF system having similarly spaced electrodes but no (or an undeployed) impedance-altering element. In a preferred embodiment, the impedance-altering element comprises an inflatable balloon configured to locally increase impedance within a patient's vasculature. The methods and apparatus of the present invention may be used to modulate a neural fiber that contributes to renal function.

DEMARAIS DENISE; ZADNO NICOLAS; CLARK BENJAMIN J; THAI ERIK

117

Aneurismas saculares: avaliação experimental de procedimento terapeutico por via intravascular/ Saccular aneurysms: experimental evaluation of the efficacy of an intra-vascular therapeutic procedure  

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Full Text Available Abstract in portuguese Visando à avaliar a possibilidade de ocluir aneurismas saculares através da injeção intra-vascular por cateterismo super-seletivo de um adesivo tecidual, os autores injetaram Bucrylat (isobutil-2-cianoacrilato) no interior de quatorze aneurismas produzidos artificialmente em artérias carótidas de cães. Estudos angiográficos realizados imediatamente antes e depois da injeção e 1 mês após o tratamento revelaram uma oclusão progressiva e persistente dos aneurism (more) as. Os exemplares examinados histologicamente 1 mês após a injeção demonstraram a presença de uma faixa fibrosa endotelializada cruzando o colo do aneurisma, o que parece indicar o caráter permanente da oclusão dos aneurismas tratados. Em nosso estudo, a reação tecidual ao adesivo foi discreta e restrita à íntima das artérias. A aplicação clínica deste método dependerá dos avanços nas técnicas de cateterização intracraniana super-seletiva, que irão permitir um cateterismo preciso e seguro da câmara aneurismática. Abstract in english Studies were performed on adult mongrel dogs to evaluate the possibility of occluding saccular aneurysms with an intravascular injection of the tissue adhesive Bucrylat (isobutyl-2-cyanoacrylate). Fourteen surgically constructed carotid aneurysms were occluded by the injection of Bucrylat through a fluoroscopically positioned intra-arterial catheter. Angiography performed immediately before and after injection and up to 1 month following treatment revealed progressive and (more) persistent occlusion of the aneurysms. The specimens examined histologically 1 month after the injection showed an endothelialized fibrous tissue bridge crossing the neck of the aneurysm what appear to indicate a permanent occlusion of the structures treated. A similar approach to treat intracranial aneurysms will depend on advances in the field of selective intracranial catheterization that will permit safe and accurate catheterization of the aneurysm sac.

Siqueira, Mario G.; Vieira, Ivoney A.; Cilião, Elizeu A.; Guerra, Dora M. G.

1980-03-01

118

Linfoma tonsilar em crianças com assimetria tonsilar Linfoma tonsilar en niños con asimetría tonsilar Tonsillar lymphoma in children with unilateral tonsillar enlargement  

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Full Text Available OBJETIVO: Demonstrar a importância do exame físico com ênfase nas alterações das tonsilas palatinas (TP) e na anamnese direcionada para a identificação precoce de pacientes com linfoma de TP. DESCRIÇÃO DO CASO: Caso 1 - Menina de cinco anos com voz abafada, observada pela mãe, e "sensação de algo estranho na garganta" há duas semanas. Foi atendida em outro serviço no início do quadro, sendo medicada com amoxicilina, sem melhora. Apresentava aumento importante da TP direita com superfície lisa e ausência de criptas. Após cirurgia, foi confirmado o diagnóstico de linfoma não Hodgkin (LNH). Na investigação também foi identificado acometimento dos linfonodos mesentéricos pelo linfoma. Caso 2 - Menina de 11 anos procurou o pronto-socorro para investigar nódulo em TP esquerda, indolor, de crescimento progressivo há um ano, sem outras queixas. Já havia passado por consultas médicas anteriores, não tendo sido valorizada a queixa da paciente. A TP esquerda encontrava-se aumentada, ultrapassando a linha média e com nódulo no polo superior. Também foi diagnosticado LNH após exame anatomopatológico. COMENTÁRIOS: Um exame minucioso da cavidade oral e do pescoço é essencial para identificar alterações suspeitas de linfoma tonsilar. Pacientes com assimetria tonsilar e outros achados sugestivos de malignidade devem ser submetidos à tonsilectomia.OBJETIVO: Demostrar la importancia de un examen físico con énfasis en las alteraciones de las tonsilas palatinas (TP) y en la anamnesis dirigida a la identificación temprana de pacientes con linfoma de TP. DESCRIPCIÓN DEL CASO: Caso 1 - Niña de cinco años, con voz velada, observada por la madre, y «sensación de algo extraño en la garganta» hace dos semanas. Fue atendida en otro servicio en el inicio del cuadro, siendo medicada con amoxicilina, sin mejora. Presentaba aumento importante de la TP derecha con superficie lisa y ausencia de criptas. Después de la cirugía, se confirmó el diagnóstico de linfoma no Hodgkin (LNH). En la investigación también se identificó acometimiento de los nodos linfáticos mesentéricos por el linfoma. Caso 2 - Muchacha de 11 años buscó al servicio de urgencia para investigar nódulo en TP izquierda, indolora, de crecimiento progresivo hace un año, sin otras quejas. Ya había pasado por consultas médicas anteriores, no habiendo sido valorizada la queja de la paciente. La TP izquierda se encontraba aumentada, sobrepasando la línea media y con nódulo en el polo superior de esa. También se diagnosticó LNH después de examen anatomopatológico. COMENTARIOS: Un examen minucioso de la cavidad oral y del cuello es esencial para identificar alteraciones sospechosas de linfoma tonsilar. Pacientes con asimetría tonsilar y otros hallazgos sugestivos de malignidad deben ser sometidos a tonsilectomía.OBJECTIVE: To demonstrate the importance of a medical examination with emphasis on changes of the palatine tonsils (PT) and proper anamnesis to early identify patients with tonsillar lymphoma. CASE DESCRIPTION: Case 1 - 5-year-old girl with a muffled voice noted by her mother and a report of "feeling a strange sensation in the throat" for two weeks. She was previously treated in another service at the beginning of the symptoms with amoxicillin without improvement. An important increase in the right PT was noted, with smooth surface and absence of crypts. The diagnosis of non-Hodgkin lymphoma (NHL) was confirmed after surgery. On further investigation, positive mesenteric lymph nodes were noted. Case 2 - 11-year-old girl came to the emergency service to investigate a painless nodule in the left palatine tonsil with progressive growth for one year, without other complaints. She had previously undergone other medical consultations, but no importance was given to the patient's complaint. Oroscopy showed that the left PT was increased crossing the midline and with a nodule in the upper pole. Patient also had NHL. COMMENTS: A detailed examination of the oral cavity and neck is essential to identify suspic

Alexandre Caixeta Guimarães; Guilherme Machado de Carvalho; Reinaldo Jordão Gusmão

2012-01-01

119

Linfoma tonsilar em crianças com assimetria tonsilar/ Tonsillar lymphoma in children with unilateral tonsillar enlargement/ Linfoma tonsilar en niños con asimetría tonsilar  

Scientific Electronic Library Online (English)

Full Text Available Abstract in portuguese OBJETIVO: Demonstrar a importância do exame físico com ênfase nas alterações das tonsilas palatinas (TP) e na anamnese direcionada para a identificação precoce de pacientes com linfoma de TP. DESCRIÇÃO DO CASO: Caso 1 - Menina de cinco anos com voz abafada, observada pela mãe, e "sensação de algo estranho na garganta" há duas semanas. Foi atendida em outro serviço no início do quadro, sendo medicada com amoxicilina, sem melhora. Apresentava aumento importan (more) te da TP direita com superfície lisa e ausência de criptas. Após cirurgia, foi confirmado o diagnóstico de linfoma não Hodgkin (LNH). Na investigação também foi identificado acometimento dos linfonodos mesentéricos pelo linfoma. Caso 2 - Menina de 11 anos procurou o pronto-socorro para investigar nódulo em TP esquerda, indolor, de crescimento progressivo há um ano, sem outras queixas. Já havia passado por consultas médicas anteriores, não tendo sido valorizada a queixa da paciente. A TP esquerda encontrava-se aumentada, ultrapassando a linha média e com nódulo no polo superior. Também foi diagnosticado LNH após exame anatomopatológico. COMENTÁRIOS: Um exame minucioso da cavidade oral e do pescoço é essencial para identificar alterações suspeitas de linfoma tonsilar. Pacientes com assimetria tonsilar e outros achados sugestivos de malignidade devem ser submetidos à tonsilectomia. Abstract in spanish OBJETIVO: Demostrar la importancia de un examen físico con énfasis en las alteraciones de las tonsilas palatinas (TP) y en la anamnesis dirigida a la identificación temprana de pacientes con linfoma de TP. DESCRIPCIÓN DEL CASO: Caso 1 - Niña de cinco años, con voz velada, observada por la madre, y «sensación de algo extraño en la garganta» hace dos semanas. Fue atendida en otro servicio en el inicio del cuadro, siendo medicada con amoxicilina, sin mejora. Presen (more) taba aumento importante de la TP derecha con superficie lisa y ausencia de criptas. Después de la cirugía, se confirmó el diagnóstico de linfoma no Hodgkin (LNH). En la investigación también se identificó acometimiento de los nodos linfáticos mesentéricos por el linfoma. Caso 2 - Muchacha de 11 años buscó al servicio de urgencia para investigar nódulo en TP izquierda, indolora, de crecimiento progresivo hace un año, sin otras quejas. Ya había pasado por consultas médicas anteriores, no habiendo sido valorizada la queja de la paciente. La TP izquierda se encontraba aumentada, sobrepasando la línea media y con nódulo en el polo superior de esa. También se diagnosticó LNH después de examen anatomopatológico. COMENTARIOS: Un examen minucioso de la cavidad oral y del cuello es esencial para identificar alteraciones sospechosas de linfoma tonsilar. Pacientes con asimetría tonsilar y otros hallazgos sugestivos de malignidad deben ser sometidos a tonsilectomía. Abstract in english OBJECTIVE: To demonstrate the importance of a medical examination with emphasis on changes of the palatine tonsils (PT) and proper anamnesis to early identify patients with tonsillar lymphoma. CASE DESCRIPTION: Case 1 - 5-year-old girl with a muffled voice noted by her mother and a report of "feeling a strange sensation in the throat" for two weeks. She was previously treated in another service at the beginning of the symptoms with amoxicillin without improvement. An impo (more) rtant increase in the right PT was noted, with smooth surface and absence of crypts. The diagnosis of non-Hodgkin lymphoma (NHL) was confirmed after surgery. On further investigation, positive mesenteric lymph nodes were noted. Case 2 - 11-year-old girl came to the emergency service to investigate a painless nodule in the left palatine tonsil with progressive growth for one year, without other complaints. She had previously undergone other medical consultations, but no importance was given to the patient's complaint. Oroscopy showed that the left PT was increased crossing the midline and with a nodule in the upper pole. Patient also had NHL. COM

Guimarães, Alexandre Caixeta; Carvalho, Guilherme Machado de; Gusmão, Reinaldo Jordão

2012-06-01

120

Taquicardia ventricular associada com linfoma não-Hodgkin Taquicardia ventricular asociada con linfoma no Hodgkin Ventricular tachycardia associated with non-Hodgkin's lymphoma  

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Full Text Available Linfoma não-Hodgkin sistêmico pode afetar o miocárdio, particularmente em pacientes imunocomprometidos. Quando presentes, sinais e sintomas são geralmente inespecíficos, tornando o diagnóstico de envolvimento cardíaco muito difícil antes da autópsia. Arritmias ventriculares também são pouco usuais nesse cenário. Descrevemos um caso de linfoma não-Hodgkin miocárdico secundário, que se apresentou com taquicardia ventricular monomórfica sustentada e espessamento do septo interventricular basal. Completa remissão das lesões miocárdicas foi observada após o término da quimioterapia de segunda linha, sem recorrências posteriores de arritmias em oito meses.Linfoma no Hodgkin sistémico puede afectar el miocardio, particularmente en pacientes inmunocomprometidos. Cuando están presentes, señales y síntomas son generalmente inespecíficos, volviendo el diagnóstico de compromiso cardíaco muy difícil antes de la autopsia. Arritmias ventriculares también son poco usuales en ese escenario. Describimos un caso de linfoma no Hodgkin miocárdico secundario, que se presentó con taquicardia ventricular monomórfica sustentada y engrosamiento del septo interventricular basal. Completa remisión de las lesiones miocárdicas fue observada después del término de la quimioterapia de segunda línea, sin recurrencias posteriores de arritmias en ocho meses.Systemic non-Hodgkin's lymphoma can affect the myocardium, particularly in immunocompromised patients. When present, symptoms and signs are usually nonspecific, making the diagnosis of cardiac involvement very difficult before an autopsy. Ventricular arrhythmias are also unusual in this setting. We describe a case of secondary myocardial non-Hodgkin's lymphoma presenting with sustained monomorphic ventricular tachycardia and thickening of the basal interventricular septum. Complete remission of myocardial lesions was observed after completion of second-line chemotherapy treatment, without further recurrences of arrhythmias in eight months.

Diego Chemello; Priscila Raupp-da-Rosa; Guilherme Teló; Nadine Clausell

2011-01-01

 
 
 
 
121

Taquicardia ventricular associada com linfoma não-Hodgkin/ Ventricular tachycardia associated with non-Hodgkin's lymphoma/ Taquicardia ventricular asociada con linfoma no Hodgkin  

Scientific Electronic Library Online (English)

Full Text Available Abstract in portuguese Linfoma não-Hodgkin sistêmico pode afetar o miocárdio, particularmente em pacientes imunocomprometidos. Quando presentes, sinais e sintomas são geralmente inespecíficos, tornando o diagnóstico de envolvimento cardíaco muito difícil antes da autópsia. Arritmias ventriculares também são pouco usuais nesse cenário. Descrevemos um caso de linfoma não-Hodgkin miocárdico secundário, que se apresentou com taquicardia ventricular monomórfica sustentada e espessame (more) nto do septo interventricular basal. Completa remissão das lesões miocárdicas foi observada após o término da quimioterapia de segunda linha, sem recorrências posteriores de arritmias em oito meses. Abstract in spanish Linfoma no Hodgkin sistémico puede afectar el miocardio, particularmente en pacientes inmunocomprometidos. Cuando están presentes, señales y síntomas son generalmente inespecíficos, volviendo el diagnóstico de compromiso cardíaco muy difícil antes de la autopsia. Arritmias ventriculares también son poco usuales en ese escenario. Describimos un caso de linfoma no Hodgkin miocárdico secundario, que se presentó con taquicardia ventricular monomórfica sustentada y (more) engrosamiento del septo interventricular basal. Completa remisión de las lesiones miocárdicas fue observada después del término de la quimioterapia de segunda línea, sin recurrencias posteriores de arritmias en ocho meses. Abstract in english Systemic non-Hodgkin's lymphoma can affect the myocardium, particularly in immunocompromised patients. When present, symptoms and signs are usually nonspecific, making the diagnosis of cardiac involvement very difficult before an autopsy. Ventricular arrhythmias are also unusual in this setting. We describe a case of secondary myocardial non-Hodgkin's lymphoma presenting with sustained monomorphic ventricular tachycardia and thickening of the basal interventricular septum (more) . Complete remission of myocardial lesions was observed after completion of second-line chemotherapy treatment, without further recurrences of arrhythmias in eight months.

Chemello, Diego; Raupp-da-Rosa, Priscila; Teló, Guilherme; Clausell, Nadine

2011-12-01

122

Linfoma primario de hueso con afectación multicéntrica/ Primary bone lymphoma with multicentric involvement  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish El linfoma primario de hueso es una enfermedad infrecuente, que tiene una presentación y evolución diferente a los linfomas de otras localizaciones. Se presenta un caso de linfoma primario de hueso de localización craneana y esternal de rápido crecimiento. En su evolución, realizada la exéresis de la lesión primaria de calota, presentó aparición de nuevas lesiones de rápido crecimiento a nivel craneano y fémur y progresión de lesión preesternal que, con anato (more) mía patológica de linfoma no Hodgkin difuso de células grandes B, inició R-CHOPP (ciclofosfamida, doxorrubicina, vincristina, prednisona y rituximab) con rápida disminución de todas las lesiones sin evidencia de progresión al cabo de los seis ciclos. Abstract in english Primary bone lymphoma is a rare disease, which usually has a different presentation and evolution than lymphomas of other locations. We are presenting a case of primary bone lymphoma of rapid growth, in cranial and sternal locations. In its evolution, once the excision of the primary lesion of the skull was performed, the patient presented new lesions of rapid growth at the skull and femur level, and progression of pre-sternal lesion. With large B-cell diffuse non-Hodgkin (more) lymphoma pathology, the patient initiated R-CHOPP (cyclophosphamide, doxorubicin, vincristine, prednisone and rituximab) with rapid reduction of all lesions without evidence of progression after the six cycles.

Graziadio, Marcelo; Medina, Natalia; Amato, Marcelo; Ardaiz, María del Carmen; Ilutovich, Santiago; Torino, Marcelo

2012-10-01

123

Linfoma primario de hueso con afectación multicéntrica Primary bone lymphoma with multicentric involvement  

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Full Text Available El linfoma primario de hueso es una enfermedad infrecuente, que tiene una presentación y evolución diferente a los linfomas de otras localizaciones. Se presenta un caso de linfoma primario de hueso de localización craneana y esternal de rápido crecimiento. En su evolución, realizada la exéresis de la lesión primaria de calota, presentó aparición de nuevas lesiones de rápido crecimiento a nivel craneano y fémur y progresión de lesión preesternal que, con anatomía patológica de linfoma no Hodgkin difuso de células grandes B, inició R-CHOPP (ciclofosfamida, doxorrubicina, vincristina, prednisona y rituximab) con rápida disminución de todas las lesiones sin evidencia de progresión al cabo de los seis ciclos.Primary bone lymphoma is a rare disease, which usually has a different presentation and evolution than lymphomas of other locations. We are presenting a case of primary bone lymphoma of rapid growth, in cranial and sternal locations. In its evolution, once the excision of the primary lesion of the skull was performed, the patient presented new lesions of rapid growth at the skull and femur level, and progression of pre-sternal lesion. With large B-cell diffuse non-Hodgkin lymphoma pathology, the patient initiated R-CHOPP (cyclophosphamide, doxorubicin, vincristine, prednisone and rituximab) with rapid reduction of all lesions without evidence of progression after the six cycles.

Marcelo Graziadio; Natalia Medina; Marcelo Amato; María del Carmen Ardaiz; Santiago Ilutovich; Marcelo Torino

2012-01-01

124

Linfoma gástrico tipo malt presentación de un caso  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Paciente femenina, raza blanca, de 50 años de edad, que acudió a consulta de gastroenterología de la clínica Popular ?Simón Bolívar? remitida de su área de salud, por presentar dolor abdominal de tipo epigastralgias, de moderada intensidad, de 2 meses de evolución, con sensación de ardor, además de aparecer más recientemente náuseas y vómitos post-prandiales. La endoscopia superior evidenció lesiones nodulares del fondo y ulcerada del cardias, el estudio h (more) istopatológico con inmunohistoquímica reveló linfoma no Hodgkin de células B extranodal, del tejido linfoide asociado a mucosa (MALTOMA). Cumplió tratamiento erradicador para el Helicobacter pylori. Las endoscopias evolutivas mostraron evidente mejoría. Catorce meses después, la evaluación histopatológica reportó gastritis crónica atrófica sin atipias, ausencia de infección por Helicobacter pylori. Actualmente está asintomática y tiene seguimiento semestral. Abstract in english Female patient, Caucasian, 50 years old, who turned up for Gastroenterology consult of the ?Simon Bolivar?Popular Clinic, remitted from their health area , because of epigastric abdominal pain of moderate intensity with two months of evolution, with burning sensation, besides nauseas and vomiting. The upper digestive endoscopy showed a big ulceration in the cardial portion and granulate mucosa in the bottom of stomach. The histological study with inmunohistochemistry re (more) vealed a B extranodal cell non Hodgkin lymphoma of mucosa-associated lymphoid tissue (MALT). She completed treatment for eradication of Helicobacter pylori . Fourteen months later, the histopathologic evaluation reported a chronic atrophic gastritis without atypical cells and an absence of infection for Helicobacter pylori. At the moment she is asymptomatic and has a biannual follow-up.

Norlan de la Cruz, Alfonso; De Jesús, Zuleyma Carolina; Kindelán Medina, Caridad

2008-03-01

125

Laparoscopic colectomy for primary colonic lymphoma Tratamiento del linfoma primario de colon mediante colectomía laparoscópica  

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Full Text Available Primary colorectal lymphoma is an infrequent disease of unknown origin and with a growing incidence. Differentiation be-tween primary lymphoma and secondary colorectal involvement is of great therapeutic and prognostic importance. The diagnosis must always be based on histological findings. Different forms of presentation have been described, though all are nonspecific. While full agreement on the best management approach for colorectal lymphoma is lacking, surgical resection is usually the treatment of choice. The role of chemotherapy has not been defined. This study reports on a case of primary lymphoma in the cecum, with clinical manifestations in the form of meteorism and early satiety. The diagnosis was established by colonoscopy and biopsy. The absence of lymph-node involvement, tumor size, existing cardiopulmonary risk factors, and the fact that a full resection of the malignancy proved possible, with tumor-free resection margins, led us to exclude adjuvant chemotherapy. After one year of follow-up the patient remains disease-free.El linfoma primario colorrectal es una enfermedad muy infrecuente, de causa desconocida y con una incidencia en aumento. Diferenciar entre el linfoma primario y la afectación colorrectal secundaria en el linfoma sistémico es de elevada importancia terapéutica y pronóstica. El diagnóstico ha de ser siempre histológico. Se han descrito diferentes formas de presentación, pero todas ellas inespecíficas. No existe un total acuerdo sobre cuál es el mejor tratamiento del linfoma colorrectal. La resección quirúrgica suele ser el procedimiento de elección, sin haberse definido el papel de la quimioterapia. Presentamos un caso de linfoma primario localizado en el ciego, cuyas manifestaciones clínicas fueron meteorismo y saciedad precoz, siendo diagnosticado mediante colonoscopia y biopsia. La resección asistida por laparoscopia fue el tratamiento de elección. La no afectación ganglionar, tamaño tumoral, resección completa con márgenes libres, así como los factores de riesgo cardiopulmonares del paciente, llevaron a desestimar la quimioterapia adyuvante. Tras un año de seguimiento el paciente se encuentra libre de enfermedad.

D. Martínez-Ramos; J. Gibert-Gerez; J. M. Miralles-Tena; M. Martínez-Banaclocha; J. Escrig-Sos; J. L. Salvador-Sanchís

2005-01-01

126

Linfoma B difuso de células grandes en ovario: presentación de un caso  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish El linfoma B difuso de células grandes es un linfoma no Hodgkin de fenotipo B y gran agresividad, con una diseminación a ovario del 7%. Su presentación de forma primaria en ovario es muy poco común, representando el 0,5% de todos los linfomas no Hodgkin y el 1,5% de todos los tumores de ovario. En este caso se presenta una paciente con clínica de dolor y distensión abdominal con una masa pélvica palpable, estableciéndose posteriormente el diagnóstico de linfoma B (more) difuso de células grandes bilateral de ovario. En determinadas situaciones resulta complicado diferenciar el origen primario o secundario de la neoplasia. Los linfomas primarios localizados en ovario tienen un mejor pronóstico que los secundarios diseminados a ovario cuyo pronóstico es más sombrío. Sin embargo la mayoría de los casos publicados están basados en tratamiento quimioterápico previo a la era de rituximab. Abstract in english The diffuse large B-cell lymphoma is a highly aggressive phenotype B non-Hodgkin lymphoma which is characterized by 7% dissemination in the ovary. Its presentation in primary form in the ovary is very uncommon and accounts for 0.5% of all lymphomas. In this case, the patient presents symptoms of pain and abdominal strain with a palpable pelvic mass and a post-diagnosis of bilateral diffuse large B-cell lymphoma in the ovary. In certain situations, it is complicated to dif (more) ferentiate between the primary and secondary origin of the neoplasia. The primary lymphomas located in the ovary have a better prognosis than secondary lymphomas whose prognosis is more uncertain. However, the majority of published cases are subjected to chemothe-rapeutic treatment prior to rituximab.

Abulhaj Martínez, Mariam; Alayón Hernández, Nicolás; Sotelo Avilés, Rafael; Arévalo Reyes, Encarnación; Caba Molina, Mercedes; Gómez Morales, Mercedes

2013-01-01

127

Simultaneous occurrence of follicular lymphoma and mixed-cellularity Hodgkin's lymphoma: lymph node and extranodal involvement Ocorrência simultânea de linfoma folicular e linfoma de Hodgkin celularidade mista: envolvimento nodal e extranodal  

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Full Text Available An unusual and well-characterised case of composite lymphoma in the spleen and lymph node is presented. The simultaneous occurrence of mixed-cellularity Hodgkin's lymphoma (HL) and follicular non-Hodgkin's lymphoma (NHL) was demonstrated in a 66-year-old man admitted in our Service with anaemia, hepatosplenomegaly and multiple abdominal lymph nodes. The morphological study of the spleen and lymph node of the splenic hilum showed an infiltrate composed of two distinct neoplasias. The liver was involved by NHL infiltrate and the peripancreatic lymph node exhibited HL. The Reed-Sternberg (RS) cells expressed CD 15 and CD 30, whereas the NHL cells presented standard immunohistochemical features of follicular lymphoma. To our knowledge, this is the fifth case report of concurrent spleen involvement by composite lymphoma. The incidence, clinicopathological and immunohistochemical features of this rare association are discussed.Os autores apresentam um caso raro e bem caracterizado de linfoma composto no baço e linfonodos. A ocorrência simultânea de um linfoma de Hodgkin e um linfoma não-Hodgkin foi demonstrada em um homem de 66 anos admitido com anemia, hepatosplenomegalia e múltiplos linfonodos abdominais. O estudo morfológico do baço e linfonodo do hilo esplênico mostrou infiltração por duas neoplasias distintas. O fígado estava envolvido por linfoma não-Hodgkin e o linfonodo peripancreático mostrava um linfoma de Hodgkin. As células de Reed-Sternberg (RS) expressaram CD 15 e CD 30, enquanto as células do linfoma não-Hodgkin apresentaram os aspectos imunoistoquímicos clássicos do linfoma folicular. Na literatura médica, este é o quinto caso descrito de envolvimento do baço por linfoma composto. A incidência, aspectos clínicos e imunoistoquímicos desta rara associação são discutidos.

Maria do Patrocínio F. Grangeiro; Sílvia Maria M. Magalhães; Francisco Valdeci A. Ferreira; Francisco Dário Rocha Filho

2004-01-01

128

Simultaneous occurrence of follicular lymphoma and mixed-cellularity Hodgkin's lymphoma: lymph node and extranodal involvement/ Ocorrência simultânea de linfoma folicular e linfoma de Hodgkin celularidade mista: envolvimento nodal e extranodal  

Scientific Electronic Library Online (English)

Full Text Available Abstract in portuguese Os autores apresentam um caso raro e bem caracterizado de linfoma composto no baço e linfonodos. A ocorrência simultânea de um linfoma de Hodgkin e um linfoma não-Hodgkin foi demonstrada em um homem de 66 anos admitido com anemia, hepatosplenomegalia e múltiplos linfonodos abdominais. O estudo morfológico do baço e linfonodo do hilo esplênico mostrou infiltração por duas neoplasias distintas. O fígado estava envolvido por linfoma não-Hodgkin e o linfonodo peri (more) pancreático mostrava um linfoma de Hodgkin. As células de Reed-Sternberg (RS) expressaram CD 15 e CD 30, enquanto as células do linfoma não-Hodgkin apresentaram os aspectos imunoistoquímicos clássicos do linfoma folicular. Na literatura médica, este é o quinto caso descrito de envolvimento do baço por linfoma composto. A incidência, aspectos clínicos e imunoistoquímicos desta rara associação são discutidos. Abstract in english An unusual and well-characterised case of composite lymphoma in the spleen and lymph node is presented. The simultaneous occurrence of mixed-cellularity Hodgkin's lymphoma (HL) and follicular non-Hodgkin's lymphoma (NHL) was demonstrated in a 66-year-old man admitted in our Service with anaemia, hepatosplenomegaly and multiple abdominal lymph nodes. The morphological study of the spleen and lymph node of the splenic hilum showed an infiltrate composed of two distinct neop (more) lasias. The liver was involved by NHL infiltrate and the peripancreatic lymph node exhibited HL. The Reed-Sternberg (RS) cells expressed CD 15 and CD 30, whereas the NHL cells presented standard immunohistochemical features of follicular lymphoma. To our knowledge, this is the fifth case report of concurrent spleen involvement by composite lymphoma. The incidence, clinicopathological and immunohistochemical features of this rare association are discussed.

Grangeiro, Maria do Patrocínio F.; Magalhães, Sílvia Maria M.; Ferreira, Francisco Valdeci A.; Rocha Filho, Francisco Dário

2004-02-01

129

Disseminated Intravascular Coagulation and Death Due to Snake Bites  

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Full Text Available Disseminated intravascular coagulation is a serious and life threatening systemic complication of snake bites that can cause death if the treatment is delayed. Herein we present a 57-year-old female patient with no prior systemic disease who died because of disseminated intravascular coagulation that developed in 6 hours due to a snake bite.

Yavuz Orak; Tunga Barç?n; Sevgi Akbulut; Bilal Ba?analan; Filiz Orak

2012-01-01

130

Intravascular Ultrasound Image Segmentation Using Morphological Snakes  

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Full Text Available From the first use of the technics of intravascular ultrasound (IVUS) as an imaging technique for the coronary artery system at the 70th century until now , the segmentation of the arterial wall boundaries still an important problem . Much research has been done to give better segmentation result for better diagnostics , evaluation and therapy planning. In this paper we present a new segmentation technics based on Morphological Snakes which developed by Luis Álvarez used for the first time for IVUS segmentation. It is a simple , fast and stable approach of snakes evolution algorithm. Results are presented and discussed in order to demonstrate the effectiveness of this approach in IVUS segmentation.

Mrabti Mohamed Amine; Hamdi Mohamed Ali

2012-01-01

131

Positron autoradiography for intravascular imaging: feasibility evaluation  

Energy Technology Data Exchange (ETDEWEB)

Approximately 70% of acute coronary artery disease is caused by unstable (vulnerable) plaques with an inflammation of the overlying cap and high lipid content. A rupturing of the inflamed cap of the plaque results in propagation of the thrombus into the lumen, blockage of the artery and acute ischaemic syndrome or sudden death. Morphological imaging such as angiography or intravascular ultrasound cannot determine inflammation status of the plaque. A radiotracer such as 18F-FDG is accumulated in vulnerable plaques due to higher metabolic activity of the inflamed cap and could be used to detect a vulnerable plaque. However, positron emission tomography (PET) cannot detect the FDG-labelled plaques because of respiratory and heart motions, small size and low activity of the plaques. Plaques can be detected using a miniature particle (positron) detector inserted into the artery. In this work, a new detector concept is investigated for intravascular imaging of the plaques. The detector consists of a storage phosphor tip bound to the end of an intravascular catheter. It can be inserted into an artery, absorb the 18F-FDG positrons from the plaques, withdrawn from the artery and read out. Length and diameter of the storage phosphor tip can be matched to the length and the diameter of the artery. Monte Carlo simulations and experimental evaluations of coronary plaque imaging with the proposed detector were performed. It was shown that the sensitivity of the storage phosphor detector to the positrons of 18F-FDG is sufficient to detect coronary plaques with 1 mm and 2 mm sizes and 590 Bq and 1180 Bq activities in the arteries with 2 mm and 3 mm diameters, respectively. An experimental study was performed using plastic tubes with 2 mm diameter filled with an FDG solution, which simulates blood. FDG spots simulating plaques were placed over the surface of the tube. A phosphor tip was inserted into the tube and imaged the plaques. Exposure time was 1 min in all simulations and experiments. Experiments showed that detecting the coronary plaques using the proposed technique is possible. The proposed technique has the potential for fast and accurate detection of vulnerable coronary and other intravascular plaques.

Shikhaliev, Polad M [Department of Radiological Sciences, University of California at Irvine, Irvine, CA 92697 (United States); Xu, Tong [Department of Radiological Sciences, University of California at Irvine, Irvine, CA 92697 (United States); Ducote, Justin L [Department of Radiological Sciences, University of California at Irvine, Irvine, CA 92697 (United States); Easwaramoorthy, Balasubramaniam [Department of Psychiatry and Human Behavior, University of California at Irvine, Irvine, CA 92697 (United States); Mukherjee, Jogeshwar [Department of Psychiatry and Human Behavior, University of California at Irvine, Irvine, CA 92697 (United States); Molloi, Sabee [Department of Radiological Sciences, University of California at Irvine, Irvine, CA 92697 (United States)

2006-02-21

132

Primary central nervous system lymphomas in immunocompetent patients Linfomas primarios del sistema nervioso central en pacientes immunocompetentes  

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Full Text Available Objectives. Primary central nervous system lymphoma (PCNSL) is a rare pathology and is most often seen in immunodeficient patients. This article presents our casuistic of PCNSL in immunocompetent patients and make a literature review on this issue with focus on recent advances, investigations, and controversies in diagnosis and management of this pathology. Matherial and methods. Nine patients operated in the last years in our clinics are analysed in relation to sex, age, time of symptoms, procedures and adjuvant treatment. Posteriorly the results are compared with those in the preview literature. Results. The age ranged from 44-68 years (middle of 66 years); 62,5% of the patients were female. The mean time of symptoms, when the diagnostic was made, was 3.2 months (range 1-6 months). The most common symptoms were hemiparesis (present in 75% of the patients) headache (37.5%) seizures (25%) and ataxia (25%). The most common localization was the parietal, frontal and temporal lobe surface with 25% of the patients for each localization. Five patients (50%) were treated with stereotactic biopsy, three with surgery (37.5%) and one (12.5%) with both of them. Five patients (62,5%) were submitted to pos-operative radiotherapy as adjuvant treatment. In relation to the hystology, the most common cell type was Difuse B Cells. Conclusions. This study demonstrated that complete surgical ressection followed by radiotherapy have shown good results. In opposition to the literature, the authors regard chemotherapy as a secondary line treatment and recommend its use only in some selected cases.Objetivos. En este trabajo presentamos nuestra casuística de linfomas cerebrales primarios en pacientes immunocompetentes comparandolo con los datos previos de la literatura, con especial enfoque en los recientes avaces, investigaciones, y controversias acerca del diagnóstico y manejo terapéutico de estas patologías. Material y método. Nueve pacientes operados el año pasado en nuestra clínica con diagnóstico de PCNLS son analizados en relación al sexo, edad, tiempo de sintomatología, procedimientos y tratamiento. Posteriormente, los resultados son comparados con los de la literatura. Resultados. La edad varió entre 44-68 años (media de 60,6 años); 62,5% de los pacientes fueron del sexo femenino; el tiempo medio de duración de los síntomas antes del diagnóstico de la enfermedad varió de 1-6 meses, con un rango medio de 3,2 meses. Los síntomas clínicos más frecuentes fueron : hemiparesia (75%), cefalea (37,5), crisis convulsivas (25%) y ataxia (25%). Las localizaciones predominaron en las superficies de los lóbulos parietal, temporal y frontal con un 25% para cada una de las localizaciones citadas. Cinco pacientes (50%) fueron tratados con biopsia estereotáxica, tres con cirugía (37.5%) y uno (12.5%) con ambas. Cinco pacientes (62,5%) fueron sometidos a radioterapia postoperatoria como tratamiento adyuvante. En relación con el tipo histológico predominó el linfoma de células difusas tipo B. Conclusiones. Este estudio demostró que la resección quirúrgica, combinada con biopsia por esterotaxia y la radioterapia dan buenos resultados. Los autores recomiendan la quimioterapia solamente como segunda línea de tratamiento, en pacientes seleccionados.

T. Alécio-Mattei; J. Alécio-Mattei; P.H. Aguiar; R. Ramina

2006-01-01

133

Primary central nervous system lymphomas in immunocompetent patients/ Linfomas primarios del sistema nervioso central en pacientes immunocompetentes  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Objetivos. En este trabajo presentamos nuestra casuística de linfomas cerebrales primarios en pacientes immunocompetentes comparandolo con los datos previos de la literatura, con especial enfoque en los recientes avaces, investigaciones, y controversias acerca del diagnóstico y manejo terapéutico de estas patologías. Material y método. Nueve pacientes operados el año pasado en nuestra clínica con diagnóstico de PCNLS son analizados en relación al sexo, edad, tiem (more) po de sintomatología, procedimientos y tratamiento. Posteriormente, los resultados son comparados con los de la literatura. Resultados. La edad varió entre 44-68 años (media de 60,6 años); 62,5% de los pacientes fueron del sexo femenino; el tiempo medio de duración de los síntomas antes del diagnóstico de la enfermedad varió de 1-6 meses, con un rango medio de 3,2 meses. Los síntomas clínicos más frecuentes fueron : hemiparesia (75%), cefalea (37,5), crisis convulsivas (25%) y ataxia (25%). Las localizaciones predominaron en las superficies de los lóbulos parietal, temporal y frontal con un 25% para cada una de las localizaciones citadas. Cinco pacientes (50%) fueron tratados con biopsia estereotáxica, tres con cirugía (37.5%) y uno (12.5%) con ambas. Cinco pacientes (62,5%) fueron sometidos a radioterapia postoperatoria como tratamiento adyuvante. En relación con el tipo histológico predominó el linfoma de células difusas tipo B. Conclusiones. Este estudio demostró que la resección quirúrgica, combinada con biopsia por esterotaxia y la radioterapia dan buenos resultados. Los autores recomiendan la quimioterapia solamente como segunda línea de tratamiento, en pacientes seleccionados. Abstract in english Objectives. Primary central nervous system lymphoma (PCNSL) is a rare pathology and is most often seen in immunodeficient patients. This article presents our casuistic of PCNSL in immunocompetent patients and make a literature review on this issue with focus on recent advances, investigations, and controversies in diagnosis and management of this pathology. Matherial and methods. Nine patients operated in the last years in our clinics are analysed in relation to sex, age, (more) time of symptoms, procedures and adjuvant treatment. Posteriorly the results are compared with those in the preview literature. Results. The age ranged from 44-68 years (middle of 66 years); 62,5% of the patients were female. The mean time of symptoms, when the diagnostic was made, was 3.2 months (range 1-6 months). The most common symptoms were hemiparesis (present in 75% of the patients) headache (37.5%) seizures (25%) and ataxia (25%). The most common localization was the parietal, frontal and temporal lobe surface with 25% of the patients for each localization. Five patients (50%) were treated with stereotactic biopsy, three with surgery (37.5%) and one (12.5%) with both of them. Five patients (62,5%) were submitted to pos-operative radiotherapy as adjuvant treatment. In relation to the hystology, the most common cell type was Difuse B Cells. Conclusions. This study demonstrated that complete surgical ressection followed by radiotherapy have shown good results. In opposition to the literature, the authors regard chemotherapy as a secondary line treatment and recommend its use only in some selected cases.

Alécio-Mattei, T.; Alécio-Mattei, J.; Aguiar, P.H.; Ramina, R.

2006-02-01

134

Cutaneous intravascular anaplastic large cell lymphoma.  

UK PubMed Central (United Kingdom)

Intravascular lymphoma (IL) is a rare variant of non-Hodgkin lymphoma with a predilection for skin. Most reported cases are large B cell lymphomas. Intravascular anaplastic large cell lymphoma (IALCL) is extremely rare. Retrospective analysis of a case of cutaneous IALCL was performed. Hematoxylin and eosin stained sections and immunohistochemical staining results were analyzed. The patient was a 47-year-old woman who had developed multiple erythematous patches and plaques on her back. The lesions responded well to CHOP (cyclophosphamide, hydroxydoxorubicin, oncovin, prednisone) chemotherapy, but relapsed shortly after therapy. The patient was surviving with the disease for eight years but was ultimately lost to follow up. Histopathologically, the neoplasm evolved from IL to extravascular lymphoma. This was showed in biopsies obtained at different stages of the disease. The lymphoma cells stained positively for CD30, CD45, CD3, CD4, CD5 and Ki67, and lacked expression of anaplastic lymphoma kinase (ALK), CD8, CD45RA, CD45RO, CD20, CD79, CD56, perforin and granzyme B. Our results suggest that IALCL represents a distinct subtype of IL and is histopathologically and biologically different from IL with B, NK or T cell phenotype.

Wang L; Li C; Gao T

2011-02-01

135

Cutaneous intravascular anaplastic large cell lymphoma.  

Science.gov (United States)

Intravascular lymphoma (IL) is a rare variant of non-Hodgkin lymphoma with a predilection for skin. Most reported cases are large B cell lymphomas. Intravascular anaplastic large cell lymphoma (IALCL) is extremely rare. Retrospective analysis of a case of cutaneous IALCL was performed. Hematoxylin and eosin stained sections and immunohistochemical staining results were analyzed. The patient was a 47-year-old woman who had developed multiple erythematous patches and plaques on her back. The lesions responded well to CHOP (cyclophosphamide, hydroxydoxorubicin, oncovin, prednisone) chemotherapy, but relapsed shortly after therapy. The patient was surviving with the disease for eight years but was ultimately lost to follow up. Histopathologically, the neoplasm evolved from IL to extravascular lymphoma. This was showed in biopsies obtained at different stages of the disease. The lymphoma cells stained positively for CD30, CD45, CD3, CD4, CD5 and Ki67, and lacked expression of anaplastic lymphoma kinase (ALK), CD8, CD45RA, CD45RO, CD20, CD79, CD56, perforin and granzyme B. Our results suggest that IALCL represents a distinct subtype of IL and is histopathologically and biologically different from IL with B, NK or T cell phenotype. PMID:20337769

Wang, Lei; Li, Chengxin; Gao, Tianwen

2011-02-01

136

La Política Criminal de los Tratados Internacionales  

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Full Text Available El artículo expone las principales características comunes de los "delitos de trascendencia internacional" (international crimes) contemplados en tratados y convenciones, que no constituyen "crímenes de derecho internacional" (crimes under international law), presentando un rudimiento de sistematización de su parte general, en el sentido de la dogmática continental. Se sostiene que los hechos comprendidos en tales categorías, que en general afectan la libertad, la vida y la seguridad personal, se reconocen como delictivos por un amplio número de Estados, lo que podría ser indicador de la existencia de un incipiente "Estado mundial", con reglas comunes de penalización al mismo tiempo necesitadas de implementación por parte de los Estados e independientes de la existencia de un órgano supranacional para hacerlas efectivasThis article exposes the principal characteristics that are common to the international crimes contemplated in treaties and conventions which do not constitute "crimes under international law", presenting a rudiment of systematization of its general part in the sense of the continental dogmatic. It is sustained that the facts understood in these categories, which in general affects the liberty, the life, and the personal security considered as crimes by a wide number of States which could be an indicator of the existence of an incipient "world state", with common rules of penalization at the same time needed to implement by the states and independents of the existence of an supranational organ to make these effective

Jean Pierre Matus A

2007-01-01

137

Model of distribution of dose for intravascular brachytherapy; Modelo de distribucion de dosis para braquiterapia intravascular  

Energy Technology Data Exchange (ETDEWEB)

In this work we present the radiation dose distributions for a theoretical model with Monte Carlo simulation, which was based on an experimental model developed for the study of the prevention of restenosis post-angioplasty employing intravascular brachytherapy. In the experimental model, the atherosclerotic plaques were induced in femoral arteries of male New Zealand rabbits through surgical intervention and later administration of cholesterol enriched diet. For the intravascular irradiation we employed a {sup 32} P source contained within the balloon used for the angioplasty. The radiation dose distributions were calculated using the Monte Carlo code MCNP4B according to a segment of a simulated artery. We studied the radiation dose distribution in the axial and radial directions for different thickness of the atherosclerotic plaques. The results will be correlated with the biologic effects observed by means of histological analysis of the irradiated arteries. (author)

Pirchio, Rosana; Signoretta, Catalina [Comision Nacional de Energia Atomica (CNEA), Buenos Aires (Argentina). Dosimetria de Radioaciones Ionizantes; Martin, Gabriela; Rivera, Elena; Bergoc, Rosa [Univeridad de Buenos Aires (Argentina). Facultad de Farmacia y Bioquimica. Lab. de Radioisotopos; Guzman, Luis [Instituto Cardiovascular de Buenos Aires (Argentina)

2001-07-01

138

Linfomas B y T: Diagnóstico inmunofenotípico de los linfomas no hodgkinianos B-and T-lymphomas. Immunophenotypical diagnosis of non-Hodgkin lymphomas  

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Full Text Available Los linfomas no hodgkinianos son neoplasias linfoides que pueden presentar fenotipo de células B ó T; las de tipo B son más frecuentes, mientras que los linfomas de tipo T tienen peor pronóstico y por lo general son más agresivos. En el ámbito internacional, la sobrevida de estas enfermedades es de aproximadamente 5 años, y en nuestro país se encuentran entre las 10 primeras causas de cáncer en ambos sexos, con prevalencia ligeramente mayor en el sexo masculino (1,3:1). Se destaca además, entre algunos aspectos, la importancia del estudio inmunofenotípico para determinar la naturaleza de estos procesos neoplásicos y distinguir entre enfermedad de Hodgkin, linfomas no hodgkinianos e infiltraciones por otros procesos linfoides, también para poder establecer factores pronósticos y de progresión en estos desórdenes linfoproliferativosThe non-Hodgkin lymphomas are lymphoid neoplasias that may present phenotype of cells B or T. The B-lymphomas are more frequent, whereas the T-lymphomas have a worse prognosis and they are generally aggressive. The survival of these diseases is of approximately 5 years at the international level. In our country, it is among the first 10 causes of death in both sexes, with a slightly higher prevalence in males (1.3:1). It is also stressed, among some other aspects, the importance of the immunophenotypical study to determine the nature of these neoplastic processes and to distinguish between Hodgkin disease, non-Hodgkin lymphomas and infiltrations due to other lymphoid processes, and to establish prognostic and progression factors in these lymphoproliferative disorders

Bertha B Socarrás Ferrer; Lázaro O del Valle Pérez; Mercedes Martínez Machado; Roberto F Silva Aguiar; Consuelo Macías Abraham

2003-01-01

139

Intravascular ultrasound in the coronary arteries.  

Science.gov (United States)

With technical improvements in catheter designs, intravascular ultrasound (IVUS) imaging of coronary arteries has become a routine procedure in most cardiac catheterization laboratories. In clinical practice, IVUS imaging of the coronary arteries is commonly performed to answer specific clinical questions such as the evaluation of an indeterminate narrowing of the left main coronary artery. In recent years, IVUS is also being performed as an endpoint for drug treatment trials in the assessment of atherosclerosis progression and/or regression. In this review we will focus on how validation studies of coronary IVUS systems have advanced our ability to use this powerful imaging tool and understand IVUS images, how acoustic and geometric factors affect proposed image processing tools and illustrate some current clinical uses of coronary IVUS. PMID:16996414

McKay, Charles R; Shavelle, David M

2006-09-01

140

Intravascular ultrasound in the coronary arteries.  

UK PubMed Central (United Kingdom)

With technical improvements in catheter designs, intravascular ultrasound (IVUS) imaging of coronary arteries has become a routine procedure in most cardiac catheterization laboratories. In clinical practice, IVUS imaging of the coronary arteries is commonly performed to answer specific clinical questions such as the evaluation of an indeterminate narrowing of the left main coronary artery. In recent years, IVUS is also being performed as an endpoint for drug treatment trials in the assessment of atherosclerosis progression and/or regression. In this review we will focus on how validation studies of coronary IVUS systems have advanced our ability to use this powerful imaging tool and understand IVUS images, how acoustic and geometric factors affect proposed image processing tools and illustrate some current clinical uses of coronary IVUS.

McKay CR; Shavelle DM

2006-09-01

 
 
 
 
141

[Disseminated intravascular coagulation. II. Therapeutic problems  

UK PubMed Central (United Kingdom)

The treatment of DIC often presents problems that are not easily solved given the difficulty of interpreting symptoms and haematological findings, the seriousness of the clinical situation and the rapid development of disease phenomena. Diagnostic questions must be answered before physiopathologically rational therapy can be applied. The identification and cure of the condition which triggers coagulation are also of primary importance in selecting a therapeutic response. Apart from specific treatment of the causal disease, the treatment of DIC is based on the one hand on the use of anticoagulants (heparin) to halt intravascular coagulation and transfusional integration with haemoderivatives and platelet concentrates to correct the haemostasis deficiency secondary to such massive consumption. On the other, direct methods are needed to control the state of shock, cardiorespiratory compromise and acute renal insufficiency which often complicate the course of the defibrination syndrome. Therapeutic success depends on timely intervention allied to the employment of adequate measures for each individual case.

Boccaccio P; Ghio R; Ratti M; Casciaro S; Rattenni S; Sergnese G

1982-02-01

142

[Intravascular catheter: prevention and therapy of infection  

UK PubMed Central (United Kingdom)

Intravascular devices are widely used. If certain precautions are taken, catheter-related infections, and especially bacteremia, are infrequent. Special attention should be paid to the correct access (peripheral versus V. subclavia or V. jugularis interna), immediate stabilization of the position, the choice of dry dressings (transparent plastic dressings should be avoided on newly inserted or arterial catheters, as well as on damp wounds), and regular changing of peripheral lines. In the febrile patient with vascular access the infective source should be sought. If the insertion site shows signs of inflammation, or if septicemia occurs, catheters must be removed. In patients with peripheral suppurative thrombophlebitis, surgical excision of the vein must be considered. In contrast, in septic thrombophlebitis of a central vein, removal of the catheter and antibiotic and anticoagulation therapy may be sufficient.

Zimmerli W

1989-03-01

143

Linfoma não-Hodgkin em adultos: perfil proteico do LCR e do soro de 25 doentes  

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Full Text Available Vinte e cinco pacientes com linfoma não-Hodgkin estudados para detecção de sinais e sintomas de comprometimento neurológico foram investigados quanto ao perfil proteico do líquido cefalorraqueano (LCR). Amostras de LCR e de soro sanguíneo colhidas no mesmo período foram estudadas comparativamente para analisar a barreira hemato-encefálica e a produção intratecal de IgG .Em 48% dos doentes foram registradas queixas e/ou sinais ao exame neurológico. A análise demonstrou: aumento das proteínas totais no LCR em 52%; imunoliberação local em um paciente HIV soropositivo; aumento de globulinas gama no LCR de dois pacientes na ausência de células neoplásicas no LCR e melhora clínica pós-quimioterapia; e registro de banda oligoclonal apenas no LCR em um doente HTLV-I soropositivo. Esses dados mostram que o estudo do perfil proteico no LCR contribui para a caracterização das manifestações do linfoma não-Hodgkin no sistema nervoso.

MIELLI SYLVIA REGINA; BEITLER BEATRIZ; GALPERIN CLÁUDIO; PALOU VIVIANA B.; LIVRAMENTO JOSÉ ANTONIO; MACHADO LUÍS DOS RAMOS; GOMES HÉLIO RODRIGUES

1998-01-01

144

Linfoma não-Hodgkin endobrônquico/ Endobronchial involvement in non-Hodgkin?s lymphoma  

Scientific Electronic Library Online (English)

Full Text Available Abstract in portuguese Os linfomas não-Hodgkin fazem parte de um grupo de doenças malignas linfoproliferativas com diferentes padrões de comportamento, de tratamento e de prognóstico. Eles podem comprometer as estruturas intratorácicas, particularmente o mediastino e o parênquima pulmonar, em alguma fase do curso da doença. Entretanto, o envolvimento endobrônquico é extremamente raro, mesmo na presença de doença avançada. Os autores relatam um caso de linfoma não-Hodgkin endobrônquico e fazem revisão da literatura. Abstract in english Non-Hodgkin?s lymphomas belong to a group of lymphoproliferative malignancies with different behavior, treatment and prognostic patterns. During the course of the disease, they may affect the thoracic structures - especially the mediastinum and the pulmonary parenchyma. However endobronchial involvement is extremely uncommon, even in presence of advanced disease. Here, we report a case of non-Hodgkin?s endobronchial lymphoma and make a review of the literature.

Zamboni, Mauro; Sousa, Aureliano Mota Cavalcanti de; Lannes, Deborah Cordeiro; Gonçalves, Cristina Maria Cantarino; Cunha, Edson Toscano; Cordeiro, Samuel Zwinglio de Biasi; Cordeiro, Paulo de Biasi

2004-02-01

145

Primary pulmonary AIDS-related lymphoma/ Linfoma primario de pulmón en un paciente con sida  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish El compromiso extranodal es frecuente en los linfomas asociados con la enfermedad debida al virus de la inmunodeficiencia humana y su consecuencia, el síndrome de inmunodeficiencia adquirida. Sin embargo, el linfoma pulmonar primario es muy raro y solo existen pocos casos publicados en la literatura. La presentación clínica de esta complicación es inespecífica, con síntomas "B" y manifestaciones respiratorias. Generalmente, la radiografía de tórax muestra nódulos (more) periféricos o masas que pueden cavitarse y los pacientes presentan inmunodeficiencia severa al momento del diagnóstico. El linfoma pulmonar primario asociado con el sida es un tumor de alto grado, de células B y asociado en su patogenia con el virus de Epstein-Barr. Se relata un caso de linfoma primario de pulmón que se presentó bajo la forma radiológica de una atelectasia global del pulmón izquierdo. Abstract in english Extranodal involvement is common in lymphomas associated with human immunodeficiency virus infection (HIV) and acquired immunodeficiency syndrome (AIDS). However, primary pulmonary AIDS-related non-Hodgkin's lymphoma is very rare and only few reports were published in the medical literature. Clinical presentation is nonspecific, with "B" and respiratory symptoms. Also, patients were with advanced immunodeficiency at the time of diagnosis. Generally, chest radiography show (more) ed peripheral nodules or cavitary masses. Primary pulmonary lymphoma associated with AIDS is generally a high-grade B-cell non-Hodgkin lymphoma and Epstein-Barr virus is strongly associated with the pathogenesis of these tumors. We report a patient with AIDS and primary pulmonary lymphoma which clinical presentation was a total atelectasis of the left lung.

Corti, Marcelo; Villafañe, María F.; Trione, Norberto; Schtirbu, Ricardo; Narbaitz, Marina

2005-08-01

146

Primary pulmonary AIDS-related lymphoma Linfoma primario de pulmón en un paciente con sida  

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Full Text Available Extranodal involvement is common in lymphomas associated with human immunodeficiency virus infection (HIV) and acquired immunodeficiency syndrome (AIDS). However, primary pulmonary AIDS-related non-Hodgkin's lymphoma is very rare and only few reports were published in the medical literature. Clinical presentation is nonspecific, with "B" and respiratory symptoms. Also, patients were with advanced immunodeficiency at the time of diagnosis. Generally, chest radiography showed peripheral nodules or cavitary masses. Primary pulmonary lymphoma associated with AIDS is generally a high-grade B-cell non-Hodgkin lymphoma and Epstein-Barr virus is strongly associated with the pathogenesis of these tumors. We report a patient with AIDS and primary pulmonary lymphoma which clinical presentation was a total atelectasis of the left lung.El compromiso extranodal es frecuente en los linfomas asociados con la enfermedad debida al virus de la inmunodeficiencia humana y su consecuencia, el síndrome de inmunodeficiencia adquirida. Sin embargo, el linfoma pulmonar primario es muy raro y solo existen pocos casos publicados en la literatura. La presentación clínica de esta complicación es inespecífica, con síntomas "B" y manifestaciones respiratorias. Generalmente, la radiografía de tórax muestra nódulos periféricos o masas que pueden cavitarse y los pacientes presentan inmunodeficiencia severa al momento del diagnóstico. El linfoma pulmonar primario asociado con el sida es un tumor de alto grado, de células B y asociado en su patogenia con el virus de Epstein-Barr. Se relata un caso de linfoma primario de pulmón que se presentó bajo la forma radiológica de una atelectasia global del pulmón izquierdo.

Marcelo Corti; María F. Villafañe; Norberto Trione; Ricardo Schtirbu; Marina Narbaitz

2005-01-01

147

T- Lymphoblastic lymphoma in adults/ Linfoma linfoblástico T dos adultos  

Scientific Electronic Library Online (English)

Full Text Available Abstract in portuguese O linfoma linfoblástico de célula T é raro e com prognóstico ruim. Após introdução de terapêutica quimioterápica seqüencial e intensificada, remissões completas passaram a ser obtidas em 75%-95% dos pacientes. Entretanto, muitos pacientes, particularmente aqueles com a chamada doença avançada, continuaram a recair tanto durante a terapia de indução como na manutenção. Além disso, todos estes estudos iniciais não foram capazes de detectar qualquer índic (more) e prognóstico capaz de prever a evolução dos pacientes. No sentido de reduzir as taxas de recidiva, o transplante autólogo de célula progenitora hematopoética em pacientes em remissão completa foi introduzido. Os resultados obtidos com esta abordagem foram bastante homogêneos, indicando uma probabilidade de sobrevida livre de doença de 65%-75% e uma sobrevida global de 60%. Sucessivos tratamentos desenhados já nos anos 2000, foram capazes de obter remissões completas acima de 90%, com taxas de recidivas da ordem de 30% e uma sobrevida global comparável à obtida com o transplante. Ainda, estes estudos também não foram capazes de detectar fatores prognósticos relacionados à evolução válidos. Mais ainda, qualquer estudo com perfil biológico foi desenvolvido. Para melhorar o prognóstico do LLB-T parece ser necessário esforço multicêntrico, de caráter nacional ou internacional, para coletar dados clínicos e biológicos. Nesta linha, é possível alcançar número crítico de dados com valor estatístico que poderiam ser capazes de detectar fatores com influência prognóstica. Finalmente, grupos de pacientes necessitam ser identificados para selecionar aqueles que poderiam se beneficiar do transplante de célula progenitora hematopoética detectados ao diagnóstico. Abstract in english Adult T-lymphoblastic lymphoma is rare and has a poor prognosis. In the 80s, following the introduction of sequential, intensified chemotherapy, complete remissions in the order of 75%-95% of treated patients, were achieved. However, several patients, namely those with advanced disease, continued to relapse either in remission or during maintenance therapy. Moreover, all these early studies were not able to detect any valuable prognostic index to predict the outcome. In a (more) n attempt to reduce the relapse rate, upfront autologous stem cell transplantation in patients in complete remission was introduced. The results obtained with this approach were quite homogeneous, indicating a probability of disease-free survival of about 65%-75% and an overall survival rate of 60%. Successive therapies designed since 2000 were able to obtain complete remissions of above 90%, with a relapse rate in the order of 30% and an overall survival comparable to that obtained with the transplant procedure. Yet, these studies were also unable to detect valuable prognostic factors predictive of the outcome. Moreover, no study on the biologic profile of the disease has been developed. To improve the prognosis of T-lymphoblastic lymphoma it seems necessary to create national registries to collect both clinical and biological data of all lymphoblastic lymphoma patients. In this way it will be possible to reach critical numbers of data with which valid statistical analysis may be performed that is able to detect factors influencing the outcome. Moreover, subsets of patients needing intensified procedures such as stem cell transplant may be detected at diagnosis.

Santini, Gino; Porcellini, Adolfo; Zupo, Simona; Truini, Mauro

2008-06-01

148

Linfoma tipo MALT de la glándula parótida Lymphoma type MALT of the parotid gland  

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Full Text Available Los linfomas tipo MALT (tejido linfoideo asociado a mucosa), constituyen la variedad más recientemente descubierta de los linfomas no Hodgkin, tienen lugar fundamentalmente en la mucosa gástrica asociados a infección por Helycobacter pylori, y en la glándula tiroides en relación con la tiroiditis de Hashimoto. Sin embargo, internacionalmente se han descrito casos en glándulas salivales asociados a linfoadenitis. La naturaleza de la lesión a menudo no puede ser determinada solo por el estudio citológico; se hace necesario el análisis histopatológico para el diagnóstico definitivo en la mayoría de los casos. El presente estudio muestra un paciente masculino con aumento de volumen bilateral de ambas glándulas parótidas y diagnóstico citohistopatológico de un proceso linfoepitelial benigno, el cual desarrolló un linfoma tipo MALT en relación con la glándula parótida derecha.The lymphomas type MALT or the mucosa-associated lymphoid tissue, are the most recent variety of non-Hodgkin lymphomas present mainly in the gastric mucosa associated with Helycobacter pylori infection and in the thyroid gland in relation to Hashimoto's thyroiditis. Frequently the origin of this lesion can't be determined only by cytology study, thus it is necessary the histopathology analysis for a definitive diagnosis in most cases. Present paper includes the case of male patient with bilateral volume increase of both parotid glands and a diagnosis cytopathological of a benign lymphoepithelial process and the development of a type MALT lymphoma in relation to the right parotid gland.

Carlos Frómeta Neira; Juan Manuel González Gómez; Miguel Arredondo López

2010-01-01

149

Linfoma tipo MALT de la glándula parótida/ Lymphoma type MALT of the parotid gland  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Los linfomas tipo MALT (tejido linfoideo asociado a mucosa), constituyen la variedad más recientemente descubierta de los linfomas no Hodgkin, tienen lugar fundamentalmente en la mucosa gástrica asociados a infección por Helycobacter pylori, y en la glándula tiroides en relación con la tiroiditis de Hashimoto. Sin embargo, internacionalmente se han descrito casos en glándulas salivales asociados a linfoadenitis. La naturaleza de la lesión a menudo no puede ser dete (more) rminada solo por el estudio citológico; se hace necesario el análisis histopatológico para el diagnóstico definitivo en la mayoría de los casos. El presente estudio muestra un paciente masculino con aumento de volumen bilateral de ambas glándulas parótidas y diagnóstico citohistopatológico de un proceso linfoepitelial benigno, el cual desarrolló un linfoma tipo MALT en relación con la glándula parótida derecha. Abstract in english The lymphomas type MALT or the mucosa-associated lymphoid tissue, are the most recent variety of non-Hodgkin lymphomas present mainly in the gastric mucosa associated with Helycobacter pylori infection and in the thyroid gland in relation to Hashimoto's thyroiditis. Frequently the origin of this lesion can't be determined only by cytology study, thus it is necessary the histopathology analysis for a definitive diagnosis in most cases. Present paper includes the case of ma (more) le patient with bilateral volume increase of both parotid glands and a diagnosis cytopathological of a benign lymphoepithelial process and the development of a type MALT lymphoma in relation to the right parotid gland.

Frómeta Neira, Carlos; González Gómez, Juan Manuel; Arredondo López, Miguel

2010-09-01

150

Linfoma malt primario de la lengua/ Primary malt limphoma of the tongue  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Los linfomas derivados de los tejidos linfoides asociados a las mucosas (MALT) primarios de la lengua son infrecuentes. Se documenta el caso de una paciente de 80 años de edad, con un tumor en el dorso de la lengua filiado histológicamente como linfoma extranodal de células B. Se sugiere como posible origen del linfoma un proceso reactivo de origen desconocido, al presentar las glándulas salivales menores adyacentes al tumor un cuadro compatible con una sialadenitis mioepitelial. Abstract in english Primitive malignant lymphoma mucosa associated lymphoid tissue (MALT) on the tongue are rare entities. We report here a case of an old woman (80 years old) with a tumor in the dorsum of the tongue, which was histologically diagnosed as an extra-nodal marginal B cell lymphoma. An inflammatory reaction resembling myoepithelial sialoadenitis was observed in the minor salivary glands adjacent at the tumour, suggesting a possible derivation of the lymphoma from a previous reactive process of unknown origin.

Goteri, Gaia; Ascani, Giuliano; Filosa, Alessandra; Corrado Rubini, C; Olay, Sonsoles; Balercia, Paolo

2004-12-01

151

[Macrophage activation syndrome as the presenting manifestation of intravascular lymphoma.  

UK PubMed Central (United Kingdom)

INTRODUCTION: Intravascular large B cell lymphoma is a neoplastic cell proliferation leading to the occlusion of the lumen of small vessels. This is a rare haematological malignancy, which is difficult to diagnose because of a heterogeneous clinical presentation. CASE REPORT: We report a 62-year-old man who presented a macrophage activation syndrome as the presenting manifestation of an intravascular lymphoma. This association is frequently marked by a greater severity and clinical care requires an early and appropriate treatment. CONCLUSION: Due to the polymorphism and the systemic presentation of intravascular large B cell lymphoma, the internist may be confronted with this disease, which is considered to be more severe if associated with a macrophage activation syndrome. Awareness of the intravascular large B cell lymphoma is important because the prognosis depends on the rapidity of the initiation of chemotherapy associated with rituximab.

Oehler E; Soubiran G; Fabiani B; Legrand O; Rio B; Ghawche F

2013-05-01

152

Linfoma não Hodgkin primário da coluna vertebral Primary non-Hodgkin's lymphoma of the vertebral column  

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Full Text Available O linfoma primário do osso (LPO) é uma condição extremamente rara, habitualmente confundida com outras lesões ósseas primárias. É responsável por cerca de 3%-5% de todos os tumores malignos no osso e 4%-7% de todos os linfomas nãoHodgkin extranodais. Caracteriza-se pelo envolvimento de um ou vários locais ósseos, com ou sem comprometimento de linfonodos regionais e vísceras. Histopatologicamente, o linfoma non Hodgkin de grandes células B representa a maioria dos casos de LPO. Ossos longos são mais frequentemente comprometidos, e o fêmur é o sítio mais acometido. Osso ilíaco e da coluna vertebral também podem ser atingidos. Relatamos um caso raro de linfoma não Hodgkin da vértebra em mulher de 41 anos. A imuno-histoquímica revelou CD20 e CD45 positivos. Ela foi diagnosticada com linfoma primário difuso de grandes células B da coluna vertebral. O estudo histopatológico da medula óssea não detectou infiltração por hemopatia linfoide. A paciente foi tratada com quimioterapia CHOP juntamente com etoposide, seguida de radioterapia (dose total = 3600cGy) na região tóraco-lombar. Não houve evidência de recidiva em um período de vinte meses de acompanhamento.Primary bone lymphoma (PBL) is an extremely rare condition, commonly confused with other primary bone injuries. It accounts for approximately 3-5% of all malignant bone tumors and 4-7% of all extranodal non-Hodgkin's lymphomas. It is characterized by the involvement of one or multiple bone locations, with or without the involvement of regional lymph nodes and viscera. Histopathologically, diffuse large-B-cell lymphomas account for the majority of cases of PBL. Long bones are usually involved, with the femur being the most commonly affected site. Pelvic bones and the vertebral column can also be involved. We report on a rare case of PLB of the vertebra in a 41-year-old woman. Immunohistochemistry examinations revealed CD20 and CD45 positive cells. She was diagnosed with primary diffuse large B-cell lymphoma presenting as a vertebral column tumor. The histopathologic analysis of the bone marrow did not show lymphoproliferative disorders. The patient was treated with a CHOP plus etoposide regimen. Systemic chemotherapy was followed by radiotherapy (total dose = 3600 cGy) in the thoracolumbar region. There was no evidence of recurrence in the 20-month follow up.

Ronald F. Pinheiro; Francisco D. Rocha Filho; Francisco V. A. Ferreira; Gabrielle G. Lima; Jacqueline H. Souza; Michelle G. Lima

2009-01-01

153

Hepatitis C: crioglobulinemia y linfoma no-Hodgkin/ Hepatitis C: cryoglobulinemia and non-Hodgkin lymphoma  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish La infección por el virus de la hepatitis C juega un papel principal en la patogénesis de la crioglobulinemia mixta, promoviendo la activación y expansión de las células B. Estos reajustes moleculares inducen la síntesis de crioglobulinas y la aparición de la vasculitis crioglobulinémica. El aclaramiento del virus provoca la resolución de las manifestaciones clínicas y de las alteraciones inmunológicas observados en la crioglobulinemia mixta en un alto porcenta (more) je de los pacientes, pero no en todos. En algunos casos, la crioglobulinemia puede aparecer tras la respuesta virológica sostenida. Muchos mecanismos de la patogénesis de la crioglobulinemia mixta están fuertemente relacionados con la infección por VHC y, cuando el virus es eliminado, hay una mejoría en el curso de la enfermedad. Aun así, los pasos independientes relacionados con otros factores no mejoran tras la erradicación del virus. En algunos tipos de linfomas no-Hodgkin de bajo grado (linfoma linfoplasmocítico y linfoma de la zona marginal) la respuesta sostenida tras el aclaramiento viral induce una remisión de la neoplasia. El VHC tiene un papel secundario en los linfomas agresivos y el aclaramiento del virus puede no inducir la remisión, pero puede disminuir la hepatotoxicidad asociada a la quimioterapia. Por tanto, en la hepatitis C crónica, la combinación de interferón pegilado y ribavirina es altamente recomendable en el tratamiento de la crioglobulinemia mixta sintomática y los linfomas no-Hodgkin asociados al VHC. Abstract in english Hepatitis C virus infection plays a major role in the pathogenesis of mixed cryoglobulinemia, promoting activation and expansion of B cells. These molecular rearrangements induce synthesis of cryoglobulins and the appearance of cryoglobulinemic vasculitis. Clearance of the virus promotes resolution of the clinical manifestations and immunological disorders seen in mixed cryoglobulinemia in a large percentage of patients, but not in all. In some cases, cryoglobulinemia cou (more) ld appear after sustained response. Several steps in the pathogenesis of mixed cryoglobulinemia are strongly related to HCV infection and when the virus is eliminated, the disease course improves. However, independent steps related to other factors do not improve following viral clearance. In some types of low-grade non-Hodgkin lymphoma (lymphomoplasmocytic lymphoma, marginal zone lymphoma) sustained response following antiviral treatment induces remission of the neoplasm. HCV has a minor role in aggressive lymphomas and clearance of the virus may not induce remission, but could decrease the hepatotoxicity associated with the chemotherapy. Therefore, in chronic hepatitis C, the combination of peginterferon + ribavirin is strongly recommended in treating symptomatic mixed cryoglobulinemia and HCV-related non-Hodgkin lymphomas.

Romero-Gómez, M.; García-Romero, D.

2008-03-01

154

Hepatitis C: crioglobulinemia y linfoma no-Hodgkin Hepatitis C: cryoglobulinemia and non-Hodgkin lymphoma  

Directory of Open Access Journals (Sweden)

Full Text Available La infección por el virus de la hepatitis C juega un papel principal en la patogénesis de la crioglobulinemia mixta, promoviendo la activación y expansión de las células B. Estos reajustes moleculares inducen la síntesis de crioglobulinas y la aparición de la vasculitis crioglobulinémica. El aclaramiento del virus provoca la resolución de las manifestaciones clínicas y de las alteraciones inmunológicas observados en la crioglobulinemia mixta en un alto porcentaje de los pacientes, pero no en todos. En algunos casos, la crioglobulinemia puede aparecer tras la respuesta virológica sostenida. Muchos mecanismos de la patogénesis de la crioglobulinemia mixta están fuertemente relacionados con la infección por VHC y, cuando el virus es eliminado, hay una mejoría en el curso de la enfermedad. Aun así, los pasos independientes relacionados con otros factores no mejoran tras la erradicación del virus. En algunos tipos de linfomas no-Hodgkin de bajo grado (linfoma linfoplasmocítico y linfoma de la zona marginal) la respuesta sostenida tras el aclaramiento viral induce una remisión de la neoplasia. El VHC tiene un papel secundario en los linfomas agresivos y el aclaramiento del virus puede no inducir la remisión, pero puede disminuir la hepatotoxicidad asociada a la quimioterapia. Por tanto, en la hepatitis C crónica, la combinación de interferón pegilado y ribavirina es altamente recomendable en el tratamiento de la crioglobulinemia mixta sintomática y los linfomas no-Hodgkin asociados al VHC.Hepatitis C virus infection plays a major role in the pathogenesis of mixed cryoglobulinemia, promoting activation and expansion of B cells. These molecular rearrangements induce synthesis of cryoglobulins and the appearance of cryoglobulinemic vasculitis. Clearance of the virus promotes resolution of the clinical manifestations and immunological disorders seen in mixed cryoglobulinemia in a large percentage of patients, but not in all. In some cases, cryoglobulinemia could appear after sustained response. Several steps in the pathogenesis of mixed cryoglobulinemia are strongly related to HCV infection and when the virus is eliminated, the disease course improves. However, independent steps related to other factors do not improve following viral clearance. In some types of low-grade non-Hodgkin lymphoma (lymphomoplasmocytic lymphoma, marginal zone lymphoma) sustained response following antiviral treatment induces remission of the neoplasm. HCV has a minor role in aggressive lymphomas and clearance of the virus may not induce remission, but could decrease the hepatotoxicity associated with the chemotherapy. Therefore, in chronic hepatitis C, the combination of peginterferon + ribavirin is strongly recommended in treating symptomatic mixed cryoglobulinemia and HCV-related non-Hodgkin lymphomas.

M. Romero-Gómez; D. García-Romero

2008-01-01

155

Risk stratification for indolent lymphomas/ Estratificação de risco dos linfomas indolentes  

Scientific Electronic Library Online (English)

Full Text Available Abstract in portuguese Os linfomas de células B indolentes representam aproximadamente 40% do total de linfomas não Hodgkin (LNHs). O avanço das tecnologias novas tem contribuído para a melhora no diagnóstico e classificação dos LNH indolentes. O linfoma folicular é o mais comum e sua frequência varia significantemente pelo mundo. Adescrição do Índice Internacional de Prognóstico dos linfomas folicular (FLIPI) representa um passo importante na identificação de subgrupos de pacien (more) tes, mas seu uso na prática clínica ainda necessita ser estabelecido. O uso de um número maior de anticorpos monoclonais para imunoistoquímica, estudo citogenético incluindo citogenética convencional ou hibridização in-situ por fluorescência (FISH), bem como o desenvolvimento de técnicas de alta resolução incluindo a expressão por microarray possibilita maior acurácia no diagnóstico e definição precisa dos biomarcadores com valor na estratificação de risco. A identificação de genes específicos para os diversos tipos de linfomas permite o reconhecimento de potenciais proteínas alvo que podem ser validadas usando imunoistoquímica. Análises da expressão do perfil de genes ou variações genéticas constitutivas pode também prover conhecimentos adicionais para o prognóstico em um futuro próximo. Um entendimento da biologia desses distintos tumores linfoides permite-nos identificar novos grupos de genes relacionados à doença e deve facilitar o desenvolvimento diagnóstico, predizendo a evolução e permitindo tratamentos personalizados. Abstract in english Indolent B-cell lymphomas account for approximately 40% of all non-Hodgkin lymphomas (NHLs). Advances in technology have contributed to improvements in the diagnosis and classification of indolent non-Hodgkin lymphomas. Follicular Lymphomas are the most common although the frequency varies significantly throughout the world. The description of the Follicular Lymphoma International Prognostic Index (FLIPI) was an important step in identifying patient subgroups, but its use (more) in the clinical practice has not been established yet. The use of a larger number of paraffin active monoclonal antibodies for immunohistochemistry, molecular cytogenetic studies including standard cytogenetics, multi-color fluorescence in-situ hybridization (FISH), polymerase chain reaction and locus-specific fluorescence insitu hybridization as well as developments in high-resolution techniquesincluding microarray gene expression profiling allow more accurate diagnosis andprecise definition of biomarkers of value in risk stratification. The identification ofdiseasespecific gene lists resulting from expression profiling provides a number ofpotential protein targets that can be validated using immunohistochemistry. Analysesof gene expression profiles or constitutive gene variations may also provide additional insight for prognostication in the near future. A comprehensive understanding of the biology of these distinct lymphoid tumors will allow us to identify novel diseaserelated genes and should facilitate the development of improved diagnosis, outcome prediction, and personalized approaches to treatment.

Hallack Neto, Abrahão Elias; Costa, Renata Oliveira; Atalla, Angelo; Dulley, Frederico Luiz; Chamone, Dalton Alencar Fischer; Pereira, Juliana

2010-01-01

156

Linfoma não Hodgkin primário da coluna vertebral/ Primary non-Hodgkin's lymphoma of the vertebral column  

Scientific Electronic Library Online (English)

Full Text Available Abstract in portuguese O linfoma primário do osso (LPO) é uma condição extremamente rara, habitualmente confundida com outras lesões ósseas primárias. É responsável por cerca de 3%-5% de todos os tumores malignos no osso e 4%-7% de todos os linfomas nãoHodgkin extranodais. Caracteriza-se pelo envolvimento de um ou vários locais ósseos, com ou sem comprometimento de linfonodos regionais e vísceras. Histopatologicamente, o linfoma non Hodgkin de grandes células B representa a maiori (more) a dos casos de LPO. Ossos longos são mais frequentemente comprometidos, e o fêmur é o sítio mais acometido. Osso ilíaco e da coluna vertebral também podem ser atingidos. Relatamos um caso raro de linfoma não Hodgkin da vértebra em mulher de 41 anos. A imuno-histoquímica revelou CD20 e CD45 positivos. Ela foi diagnosticada com linfoma primário difuso de grandes células B da coluna vertebral. O estudo histopatológico da medula óssea não detectou infiltração por hemopatia linfoide. A paciente foi tratada com quimioterapia CHOP juntamente com etoposide, seguida de radioterapia (dose total = 3600cGy) na região tóraco-lombar. Não houve evidência de recidiva em um período de vinte meses de acompanhamento. Abstract in english Primary bone lymphoma (PBL) is an extremely rare condition, commonly confused with other primary bone injuries. It accounts for approximately 3-5% of all malignant bone tumors and 4-7% of all extranodal non-Hodgkin's lymphomas. It is characterized by the involvement of one or multiple bone locations, with or without the involvement of regional lymph nodes and viscera. Histopathologically, diffuse large-B-cell lymphomas account for the majority of cases of PBL. Long bones (more) are usually involved, with the femur being the most commonly affected site. Pelvic bones and the vertebral column can also be involved. We report on a rare case of PLB of the vertebra in a 41-year-old woman. Immunohistochemistry examinations revealed CD20 and CD45 positive cells. She was diagnosed with primary diffuse large B-cell lymphoma presenting as a vertebral column tumor. The histopathologic analysis of the bone marrow did not show lymphoproliferative disorders. The patient was treated with a CHOP plus etoposide regimen. Systemic chemotherapy was followed by radiotherapy (total dose = 3600 cGy) in the thoracolumbar region. There was no evidence of recurrence in the 20-month follow up.

Pinheiro, Ronald F.; Rocha Filho, Francisco D.; Ferreira, Francisco V. A.; Lima, Gabrielle G.; Souza, Jacqueline H.; Lima, Michelle G.

2009-01-01

157

Laparoscopic colectomy for primary colonic lymphoma/ Tratamiento del linfoma primario de colon mediante colectomía laparoscópica  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish El linfoma primario colorrectal es una enfermedad muy infrecuente, de causa desconocida y con una incidencia en aumento. Diferenciar entre el linfoma primario y la afectación colorrectal secundaria en el linfoma sistémico es de elevada importancia terapéutica y pronóstica. El diagnóstico ha de ser siempre histológico. Se han descrito diferentes formas de presentación, pero todas ellas inespecíficas. No existe un total acuerdo sobre cuál es el mejor tratamiento de (more) l linfoma colorrectal. La resección quirúrgica suele ser el procedimiento de elección, sin haberse definido el papel de la quimioterapia. Presentamos un caso de linfoma primario localizado en el ciego, cuyas manifestaciones clínicas fueron meteorismo y saciedad precoz, siendo diagnosticado mediante colonoscopia y biopsia. La resección asistida por laparoscopia fue el tratamiento de elección. La no afectación ganglionar, tamaño tumoral, resección completa con márgenes libres, así como los factores de riesgo cardiopulmonares del paciente, llevaron a desestimar la quimioterapia adyuvante. Tras un año de seguimiento el paciente se encuentra libre de enfermedad. Abstract in english Primary colorectal lymphoma is an infrequent disease of unknown origin and with a growing incidence. Differentiation be-tween primary lymphoma and secondary colorectal involvement is of great therapeutic and prognostic importance. The diagnosis must always be based on histological findings. Different forms of presentation have been described, though all are nonspecific. While full agreement on the best management approach for colorectal lymphoma is lacking, surgical resec (more) tion is usually the treatment of choice. The role of chemotherapy has not been defined. This study reports on a case of primary lymphoma in the cecum, with clinical manifestations in the form of meteorism and early satiety. The diagnosis was established by colonoscopy and biopsy. The absence of lymph-node involvement, tumor size, existing cardiopulmonary risk factors, and the fact that a full resection of the malignancy proved possible, with tumor-free resection margins, led us to exclude adjuvant chemotherapy. After one year of follow-up the patient remains disease-free.

Martínez-Ramos, D.; Gibert-Gerez, J.; Miralles-Tena, J. M.; Martínez-Banaclocha, M.; Escrig-Sos, J.; Salvador-Sanchís, J. L.

2005-10-01

158

Burkitt-like lymphoma in an infant: a case report Linfoma burkitt-like em um lactente: relato de caso  

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Full Text Available Childhood non-Hodgkin's lymphomas, including Burkitt and Burkitt-like, are rarely diagnosed in infants. A case of B-cell lymphoma in a 13-month-old girl with extensive abdominal disease, ascites, pleural effusion, and tumor lysis syndrome is reported. Phenotypic analysis showed a germinal center B-cell phenotype, and a B-cell clonality was confirmed by polymerase chain reaction. There was no evidence of Epstein-Barr and HIV infection. The case herein reported emphasizes the need for considering the diagnosis of lymphoma even in very young children.Os linfomas não Hodgkin da infância, incluindo os linfomas de Burkitt e Burkitt-like são raros em lactentes. Um caso de linfoma não Hodgkin B em uma lactente de 13 meses de idade é descrito. Ao diagnóstico a paciente apresentava extenso comprometimento abdominal associado à ascite, derrame pleural e síndrome de lise tumoral. A análise imunofenotípica mostrou um fenótipo compatível com células linfóides oriundas do centro germinativo e a origem clonal dessas células foi demonstrada por reação em cadeia da polimerase. Não foi demonstrada associação do linfoma com infecção pelo vírus Epstein-Barr e/ou virus da imunodeficiência adquirida. O caso apresentado enfatiza a necessidade de considerar o diagnóstico de linfoma mesmo em lactentes.

Claudete Esteves Klumb; Lídia Maria Magalhães de Resende; Claudio Gustavo Stefanoff; Carlos Humberto Vicuña; Ilana Zalcberg Renault; Raquel Ciuvalschi Maia

2003-01-01

159

Manifestação bucal de linfoma difuso de grandes células B/ Oral manifestation of diffuse large B-cell lymphoma  

Scientific Electronic Library Online (English)

Full Text Available Abstract in portuguese O linfoma de células B acomete cerca de 90% de todos os casos de linfoma. O aparecimento da lesão bucal deste tipo de linfoma é pouco comum e raras vezes se manifesta em região anterior de mandíbula. Neste relato de caso, o paciente de 22 anos, sexo masculino, com diagnóstico de linfoma de grandes células B em mediastino e pleura, após um ano de tratamento apresentou lesão nodular em região anterior de mandíbula, comprometendo os dentes incisivos inferiores. O (more) diagnóstico histológico e imuno-histoquímico confirmou a forma secundária do linfoma. O paciente foi submetido a tratamento quimioterápico com regressão completa da lesão mandibular e está sob acompanhamento odontológico reabilitador. Abstract in english B-cell lymphomas account for around 90% of all cases of lymphoma. The appearance of oral lesions with this type of lymphoma is uncommon but in cases where involvement is seen, the anterior region of lower jaw is most frequently affected. Here the case of a 22-year-old male patient is reported; he was diagnosed with large B cell lymphoma in the mediastinal pleura and after 1 year of treatment he evolved with a nodular lesion in the anterior region of the lower jaw involving the incisors. Histological diagnosis and immunohistochemistry confirmed secondary lymphoma. The patient was submitt.

Santos, Paulo Sérgio S.; Ferreira, Eduardo S.; Vidote, Rafael M.; Paes, Roberto Antonio P.; Freitas, Ronaldo R.

2009-01-01

160

Manifestação bucal de linfoma difuso de grandes células B Oral manifestation of diffuse large B-cell lymphoma  

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Full Text Available O linfoma de células B acomete cerca de 90% de todos os casos de linfoma. O aparecimento da lesão bucal deste tipo de linfoma é pouco comum e raras vezes se manifesta em região anterior de mandíbula. Neste relato de caso, o paciente de 22 anos, sexo masculino, com diagnóstico de linfoma de grandes células B em mediastino e pleura, após um ano de tratamento apresentou lesão nodular em região anterior de mandíbula, comprometendo os dentes incisivos inferiores. O diagnóstico histológico e imuno-histoquímico confirmou a forma secundária do linfoma. O paciente foi submetido a tratamento quimioterápico com regressão completa da lesão mandibular e está sob acompanhamento odontológico reabilitador.B-cell lymphomas account for around 90% of all cases of lymphoma. The appearance of oral lesions with this type of lymphoma is uncommon but in cases where involvement is seen, the anterior region of lower jaw is most frequently affected. Here the case of a 22-year-old male patient is reported; he was diagnosed with large B cell lymphoma in the mediastinal pleura and after 1 year of treatment he evolved with a nodular lesion in the anterior region of the lower jaw involving the incisors. Histological diagnosis and immunohistochemistry confirmed secondary lymphoma. The patient was submitt.

Paulo Sérgio S. Santos; Eduardo S. Ferreira; Rafael M. Vidote; Roberto Antonio P. Paes; Ronaldo R. Freitas

2009-01-01

 
 
 
 
161

Toward a Continuous Intravascular Glucose Monitoring System  

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Full Text Available Proof-of-concept studies that display the potential of using a glucose-sensitive hydrogel as a continuous glucose sensor are presented. The swelling ratio, porosity, and diffusivity of the hydrogel increased with glucose concentration. In glucose solutions of 50, 100, 200, and 300 mg/dL, the hydrogel swelling ratios were 4.9, 12.3, 15.9, and 21.7, respectively, and the swelling was reversible. The impedance across the hydrogel depended solely on the thickness and had an average increase of 47 W/mm. The hydrogels exposed to a hyperglycemic solution were more porous than the hydrogels exposed to a normal glycemic solution. The diffusivity of 390 Da MW fluorescein isothiocyanate in hydrogels exposed to normal and hyperglycemic solutions was examined using fluorescence recovery after photobleaching and was found to be 9.3 × 10?14 and 41.4 × 10?14 m2/s, respectively, compared to 6.2 × 10?10 m2/s in glucose solution. There was no significant difference between the permeability of hydrogels in normal and hyperglycemic glucose solutions with averages being 5.26 × 10?17 m2 and 5.80 × 10?17 m2, respectively, which resembles 2–4% agarose gels. A prototype design is presented for continuous intravascular glucose monitoring by attaching a glucose sensor to an FDA-approved stent.

Brooke Beier; Katherine Musick; Akira Matsumoto; Alyssa Panitch; Eric Nauman; Pedro Irazoqui

2010-01-01

162

Linfoma de colo de útero: achados na ressonância magnética Lymphoma of uterine cervix: magnetic resonance imaging findings  

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Full Text Available Linfoma de colo uterino é uma doença rara. Cerca de 1,0% a 1,5% dos linfomas extranodais se origina no trato genital feminino. A apresentação clínica é inespecífica e a ressonância magnética é importante para a suspeita diagnóstica. Neste artigo relatamos o caso de uma paciente de 80 anos de idade com dor lombar, cuja ressonância mostrou volumosa massa uterina. O diagnóstico final foi de linfoma.Lymphoma of the cervix is a rare disease. About 1.0% to 1.5% of extranodal lymphomas originates in the female genital tract. The clinical presentation of this condition is nonspecific and magnetic resonance imaging is important for diagnostic elucidation. The present report describes the case of a 80-year-old patient with lumbar pain, whose magnetic resonance imaging showed a large uterine mass. The final diagnosis was lymphoma.

Daniel Kanaan; Daniella Braz Parente; Carolina Pesce Lamas Constantino; Rodrigo Canellas de Souza

2012-01-01

163

Linfoma de colo de útero: achados na ressonância magnética/ Lymphoma of uterine cervix: magnetic resonance imaging findings  

Scientific Electronic Library Online (English)

Full Text Available Abstract in portuguese Linfoma de colo uterino é uma doença rara. Cerca de 1,0% a 1,5% dos linfomas extranodais se origina no trato genital feminino. A apresentação clínica é inespecífica e a ressonância magnética é importante para a suspeita diagnóstica. Neste artigo relatamos o caso de uma paciente de 80 anos de idade com dor lombar, cuja ressonância mostrou volumosa massa uterina. O diagnóstico final foi de linfoma. Abstract in english Lymphoma of the cervix is a rare disease. About 1.0% to 1.5% of extranodal lymphomas originates in the female genital tract. The clinical presentation of this condition is nonspecific and magnetic resonance imaging is important for diagnostic elucidation. The present report describes the case of a 80-year-old patient with lumbar pain, whose magnetic resonance imaging showed a large uterine mass. The final diagnosis was lymphoma.

Kanaan, Daniel; Parente, Daniella Braz; Constantino, Carolina Pesce Lamas; Souza, Rodrigo Canellas de

2012-06-01

164

Quimioterapia associada à terapia anti-retroviral de alta eficácia no tratamento dos linfomas não-Hodgkin agressivos relacionados à Síndrome da Imunodeficiência Adquirida/ Chemotherapy combined with highly active antiretroviral therapy for the treatment of aggressive AIDS related lymphomas  

Scientific Electronic Library Online (English)

Full Text Available Abstract in portuguese Linfoma não-Hodgkin é uma das complicações oncológicas mais freqüentes em portadores da Síndrome da Imunodeficiência Adquirida (AIDS). Em outros países, após a introdução da terapia anti-retroviral de alta atividade (HAART), a queda na incidência dos linfomas agressivos sistêmicos ficou aquém das expectativas, embora a sobrevida destes pacientes tenha triplicado. No Brasil, pouco se conhece a respeito do comportamento clínico e da sobrevida dos pacientes c (more) om linfoma e AIDS na era pós-HAART. O objetivo deste estudo foi avaliar retrospectivamente 25 pacientes com linfoma e AIDS, tratados com a associação de quimioterapia e HAART. Em concordância com a literatura, a maior parte dos pacientes era do sexo masculino - 20 (80%), com mediana de idade de 39 anos. Houve predomínio do subtipo histológico Difuso de Grandes Células B - 13 (52%), de pacientes em estádios avançados - 15 (60%), com envolvimento extranodal - 22 (88%) e com sintomas B - 18 (72%). O diagnóstico prévio de AIDS observado em 14 (56%) foi superior em nossa casuística em relação ao descrito por outros autores. Cinqüenta e dois por cento dos pacientes obtiveram RC, com SLD e SG em três anos de 54% e 42%, respectivamente e mediana de SG de 15 meses. Toxicidade hematológica e infecções foram freqüentes, porém nenhum óbito foi relacionado à sua ocorrência. Concluímos que o tratamento combinado com quimioterapia e HAART é factível em pacientes brasileiros, podendo propiciar uma sobrevida global similar à descrita por alguns grupos internacionais, com um perfil aceitável de toxicidade. Abstract in english Non-Hodgkin lymphoma is one of the most frequent oncological complications in patients with the Acquired Immune-Deficiency Syndrome (AIDS). In other countries, after the introduction of the Highly Active Antiretroviral Therapy (HAART), the drop in the incidence of systemic aggressive lymphomas was below expectations, although the survival of these patients rose. In Brazil, little is known about the clinical behavior and survival of the patients with lymphoma and AIDS in t (more) he post-HAART era. The aim of this study was to retrospectively evaluate 25 patients with lymphomas and AIDS, treated with the combination of chemotherapy and HAART. In agreement with the literature most of the patients were male (20 patients - 80%) with a median age of 39 years. We observed a predominance of the Diffuse Large B Cell Lymphoma subtype (13 patients - 52%), advanced stage (15 patients - 60%), with extra-nodal disease (22 patients - 88%) and B symptoms (18 patients - 72%). Previous AIDS diagnosis was present in 14 patients (56%), higher than that reported in other series. Fifty-two percent achieved CR, the estimated probability of overall survival and disease-free survival at 3 years were 54% e 42%, respectively. The median overall survival time was 15 months. Hematological toxicity and infections were frequently observed, but no toxicity-related deaths were seen. Therefore we conclude that the combined chemotherapy-HAART treatment is feasible in Brazilian patients and can provide similar overall survival than that described for some international groups, with an acceptable toxicity profile.

Pereira, Juliana; Hallack Neto, Abrahão E; Pracchia, Luís F.; Alcântara, Andréa; Maurino, Beatriz B.; Dorliac-Llacer, Pedro E.; Chamone, Dalton A. F.

2004-01-01

165

Quimioterapia associada à terapia anti-retroviral de alta eficácia no tratamento dos linfomas não-Hodgkin agressivos relacionados à Síndrome da Imunodeficiência Adquirida Chemotherapy combined with highly active antiretroviral therapy for the treatment of aggressive AIDS related lymphomas  

Directory of Open Access Journals (Sweden)

Full Text Available Linfoma não-Hodgkin é uma das complicações oncológicas mais freqüentes em portadores da Síndrome da Imunodeficiência Adquirida (AIDS). Em outros países, após a introdução da terapia anti-retroviral de alta atividade (HAART), a queda na incidência dos linfomas agressivos sistêmicos ficou aquém das expectativas, embora a sobrevida destes pacientes tenha triplicado. No Brasil, pouco se conhece a respeito do comportamento clínico e da sobrevida dos pacientes com linfoma e AIDS na era pós-HAART. O objetivo deste estudo foi avaliar retrospectivamente 25 pacientes com linfoma e AIDS, tratados com a associação de quimioterapia e HAART. Em concordância com a literatura, a maior parte dos pacientes era do sexo masculino - 20 (80%), com mediana de idade de 39 anos. Houve predomínio do subtipo histológico Difuso de Grandes Células B - 13 (52%), de pacientes em estádios avançados - 15 (60%), com envolvimento extranodal - 22 (88%) e com sintomas B - 18 (72%). O diagnóstico prévio de AIDS observado em 14 (56%) foi superior em nossa casuística em relação ao descrito por outros autores. Cinqüenta e dois por cento dos pacientes obtiveram RC, com SLD e SG em três anos de 54% e 42%, respectivamente e mediana de SG de 15 meses. Toxicidade hematológica e infecções foram freqüentes, porém nenhum óbito foi relacionado à sua ocorrência. Concluímos que o tratamento combinado com quimioterapia e HAART é factível em pacientes brasileiros, podendo propiciar uma sobrevida global similar à descrita por alguns grupos internacionais, com um perfil aceitável de toxicidade.Non-Hodgkin lymphoma is one of the most frequent oncological complications in patients with the Acquired Immune-Deficiency Syndrome (AIDS). In other countries, after the introduction of the Highly Active Antiretroviral Therapy (HAART), the drop in the incidence of systemic aggressive lymphomas was below expectations, although the survival of these patients rose. In Brazil, little is known about the clinical behavior and survival of the patients with lymphoma and AIDS in the post-HAART era. The aim of this study was to retrospectively evaluate 25 patients with lymphomas and AIDS, treated with the combination of chemotherapy and HAART. In agreement with the literature most of the patients were male (20 patients - 80%) with a median age of 39 years. We observed a predominance of the Diffuse Large B Cell Lymphoma subtype (13 patients - 52%), advanced stage (15 patients - 60%), with extra-nodal disease (22 patients - 88%) and B symptoms (18 patients - 72%). Previous AIDS diagnosis was present in 14 patients (56%), higher than that reported in other series. Fifty-two percent achieved CR, the estimated probability of overall survival and disease-free survival at 3 years were 54% e 42%, respectively. The median overall survival time was 15 months. Hematological toxicity and infections were frequently observed, but no toxicity-related deaths were seen. Therefore we conclude that the combined chemotherapy-HAART treatment is feasible in Brazilian patients and can provide similar overall survival than that described for some international groups, with an acceptable toxicity profile.

Juliana Pereira; Abrahão E Hallack Neto; Luís F. Pracchia; Andréa Alcântara; Beatriz B. Maurino; Pedro E. Dorliac-Llacer; Dalton A. F. Chamone

2004-01-01

166

TRATADOS INTERNACIONALES DE DERECHOS HUMANOS BAJO EL ORDENAMIENTO JURÍDICO ALEMÁN  

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Full Text Available En el presente artículo el autor analiza la posición de los tratados internacionales en general, como asimismo, los tratados de derechos humanos y de integración en el sistema jurídico alemán, considerando la posición de la doctrina y la jurisprudencia emanada de la Corte Constitucional Alemana.The article analyzes the status in the German legal system of international treaties in general, and treaties on human rights and integration in particular, from the point of view of legal scholarship and the decisions of the German Constitutional Court.

Roland Bank

2003-01-01

167

Leucemia/linfoma de células T do adulto Adult T-cell leukemia/lymphoma  

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Full Text Available A leucemia/linfoma de células T do adulto (ATL) é tipo agressivo de doença linfoproliferativa causada pelo vírus linfotrópico para células T humanas (HTLV-I), geralmente fatal e que não responde a quimioterapia. Classifica-se em formas aguda, crônica, linfomatosa e indolente (smoldering). Outra forma clínica, a tumoral primária de pele, com características diferentes, foi sugerida recentemente. As formas aguda, linfomatosa e tumoral primária de pele são as de pior prognóstico. Os critérios diagnósticos de ATL são: sorologia positiva para o HTLV-I; diagnóstico citológico ou histológico de leucemia/linfoma de células T, CD4+/CD25+; presença de linfócitos T anormais em sangue periférico; confirmação de integração monoclonal do DNA proviral do HTLV-I. Há lesões de pele em cerca de 70% dos casos,que podem ser primários (formas indolente e tumoral primária da pele) ou secundários. As lesões cutâneas são múltiplas, sendo as mais freqüentes a eritrodermia, as pápulas e as placas. A ATL não tem aspecto histológico característico, podendo apresentar padrões superponíveis ao linfoma periférico T não especificado, à micose fungóide ou ao linfoma anaplásico de grandes células. O padrão imuno-histoquímico pode também simular o de outros tipos de linfoma T. Por esse motivo, é muito importante que no Brasil seja solicitada sorologia para o HTLV-I em todos os casos de leucemia e/ou linfoma de células T maduras.Adult T cell leukemia/lymphoma (ATL) is an aggressive type of lymphoproliferative disease associated with the human T-cell lymphotropic virus type I (HTLV-I) that is characterized by a short survival time and absence of response to chemotherapy. ATL is classified into four clinical types: acute, chronic, lymphoma, and smoldering. Another clinical form of ATL, the primary cutaneous tumoral,with diverse characteristics, has been recently suggested. Patients with acute, lymphoma and primary cutaneous tumoral types have a poor prognosis. The diagnostic criteria of ATL consist of: positive serology for HTLV-I; cytologic or histologic confirmation of CD4+/CD25+ T-cell leukemia/lymphoma; abnormal T lymphocytes in peripheral blood; and confirmation of monoclonal integration of HTLV-I proviral DNA. There is skin involvement in around 70% of ATL cases, which could be primary (smoldering and primary cutaneous tumoral) or secondary. The skin lesions are multiple, erythroderma, papules and plaques being the most common. ATL has no characteristic histological pattern, and may present patterns that could superimpose nonspecific peripheral T-cell lymphoma, mycosis fungoides or anaplastic large cell lymphoma. The immunohistochemistry pattern may also be similar to that of other T-cell lymphomas. Thus, it is very important that in Brazil HTLV-I infection be investigated in all mature T-cell leukemias/lymphomas.

Achiléa L. Bittencourt; Lourdes Farré

2008-01-01

168

Leucemia/linfoma de células T do adulto/ Adult T-cell leukemia/lymphoma  

Scientific Electronic Library Online (English)

Full Text Available Abstract in portuguese A leucemia/linfoma de células T do adulto (ATL) é tipo agressivo de doença linfoproliferativa causada pelo vírus linfotrópico para células T humanas (HTLV-I), geralmente fatal e que não responde a quimioterapia. Classifica-se em formas aguda, crônica, linfomatosa e indolente (smoldering). Outra forma clínica, a tumoral primária de pele, com características diferentes, foi sugerida recentemente. As formas aguda, linfomatosa e tumoral primária de pele são as de (more) pior prognóstico. Os critérios diagnósticos de ATL são: sorologia positiva para o HTLV-I; diagnóstico citológico ou histológico de leucemia/linfoma de células T, CD4+/CD25+; presença de linfócitos T anormais em sangue periférico; confirmação de integração monoclonal do DNA proviral do HTLV-I. Há lesões de pele em cerca de 70% dos casos,que podem ser primários (formas indolente e tumoral primária da pele) ou secundários. As lesões cutâneas são múltiplas, sendo as mais freqüentes a eritrodermia, as pápulas e as placas. A ATL não tem aspecto histológico característico, podendo apresentar padrões superponíveis ao linfoma periférico T não especificado, à micose fungóide ou ao linfoma anaplásico de grandes células. O padrão imuno-histoquímico pode também simular o de outros tipos de linfoma T. Por esse motivo, é muito importante que no Brasil seja solicitada sorologia para o HTLV-I em todos os casos de leucemia e/ou linfoma de células T maduras. Abstract in english Adult T cell leukemia/lymphoma (ATL) is an aggressive type of lymphoproliferative disease associated with the human T-cell lymphotropic virus type I (HTLV-I) that is characterized by a short survival time and absence of response to chemotherapy. ATL is classified into four clinical types: acute, chronic, lymphoma, and smoldering. Another clinical form of ATL, the primary cutaneous tumoral,with diverse characteristics, has been recently suggested. Patients with acute, lymp (more) homa and primary cutaneous tumoral types have a poor prognosis. The diagnostic criteria of ATL consist of: positive serology for HTLV-I; cytologic or histologic confirmation of CD4+/CD25+ T-cell leukemia/lymphoma; abnormal T lymphocytes in peripheral blood; and confirmation of monoclonal integration of HTLV-I proviral DNA. There is skin involvement in around 70% of ATL cases, which could be primary (smoldering and primary cutaneous tumoral) or secondary. The skin lesions are multiple, erythroderma, papules and plaques being the most common. ATL has no characteristic histological pattern, and may present patterns that could superimpose nonspecific peripheral T-cell lymphoma, mycosis fungoides or anaplastic large cell lymphoma. The immunohistochemistry pattern may also be similar to that of other T-cell lymphomas. Thus, it is very important that in Brazil HTLV-I infection be investigated in all mature T-cell leukemias/lymphomas.

Bittencourt, Achiléa L.; Farré, Lourdes

2008-08-01

169

78 FR 53773 - Select Updates for Non-Clinical Engineering Tests and Recommended Labeling for Intravascular...  

Science.gov (United States)

...Select Updates for Non-Clinical Engineering Tests and Recommended Labeling for Intravascular...Select Updates for Non- Clinical Engineering Tests and Recommended Labeling for Intravascular...substantial updates to the ``Non-Clinical Engineering Tests and Recommended Labeling for...

2013-08-30

170

Development of a catheter for combined intravascular ultrasound and photoacoustic imaging  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Atherosclerosis is characterized by formation and development of the plaques in the inner layer of the vessel wall. To detect and characterize atherosclerotic plaques, we previously introduced the combined intravascular ultrasound (IVUS) and intravascular photoacoustic (IVPA) imaging capable of asse...

Karpiouk, Andrei B.; Wang, Bo; Emelianov, Stanislav Y.

171

Intravascular brachytherapy for peripheral vascular disease  

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Full Text Available Scientific background: Percutaneous transluminal angioplasties (PTA) through balloon dilatation with or without stenting, i.e. vessel expansion through balloons with or without of implantation of small tubes, called stents, are used in the treatment of peripheral artery occlusive disease (PAOD). The intravascular vessel irradiation, called intravascular brachytherapy, promises a reduction in the rate of repeated stenosis (rate of restenosis) after PTA. Research questions: The evaluation addresses questions on medical efficacy, cost-effectiveness as well as ethic, social and legal implications in the use of brachytherapy in PAOD patients. Methods: A systematic literature search was conducted in August 2007 in the most important medical electronic databases for publications beginning from 2002. The medical evaluation included randomized controlled trials (RCT). The information synthesis was performed using meta-analysis. Health economic modeling was performed with clinical assumptions derived from the meta-analysis and economical assumptions derived from the German Diagnosis Related Groups (G-DRG-2007). Results: Medical evaluation: Twelve publications about seven RCT on brachytherapy vs. no brachytherapy were included in the medical evaluation. Two RCT showed a significant reduction in the rate of restenosis at six and/or twelve months for brachytherapy vs. no brachytherapy after successful balloon dilatation, the relative risk in the meta-analysis was 0.62 (95% CI: 0.46 to 0.84). At five years, time to recurrence of restenosis was significantly delayed after brachytherapy. One RCT showed a significant reduction in the rate of restenosis at six months for brachytherapy vs. no brachytherapy after PTA with optional stenting, the relative risk in the meta-analysis was 0.76 (95% CI: 0.61 to 0.95). One RCT observed a significantly higher rate of late thrombotic occlusions after brachytherapy in the subgroup of stented patients. A single RCT for brachytherapy vs. no brachytherapy after stenting did not show significant results for the rate of restenosis at six months. Both, early and late thrombotic occlusions appeared more frequently in the brachytherapy group. Health economic evaluation: Additional costs of brachytherapy were estimated to be 1,655 or 1,767 Euro according to the used G-DRG. The incremental cost-effectiveness ratio per avoided restenosis was calculated to be 8,484 Euro or 9,058 Euro for brachytherapy use after successful balloon dilatation, 19,027 Euro or 20,314 Euro for brachytherapy after PTA with optional stenting and -39,646 Euro or -48,330 Euro for brachytherapy after stenting. Discussion: Partially poor performing and reporting quality of the RCT exacerbate the interpretation and the transferability of the study results. The used methodical approach enables the highest evidence level for the determined results and presents a good approximation of the current brachytherapy related costs for the German health care system. Conclusions: Brachytherapy after successful balloon dilatation in PAOD can be recommended from a medical point of view for the reduction of the rate of restenosis at one year. However from a health economic view the answer is not yet clear. Based on the current data the use of brachytherapy after stenting in PAOD cannot be recommended neither from a medical nor from a health economic point of view. The informed consent of the patients is an important ethical aspect in the use of brachytherapy.

Gorenoi, Vitali; Dintsios, Charalabos-Markos; Schönermark, Matthias P.; Hagen, Anja

2008-01-01

172

Recurrence of peripheral T-cell lymphoma as granulomas in the lower limbs Granulomas epitelióides cutâneos, como manifestação de recidiva de linfoma de células T periférico  

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Full Text Available The presence of granulomas in the skin of T-cell lymphoma patients is a rare but well-known phenomenon. The authors present the case of a 44-year-old Caucasian male, with a previously treated peripheral T-cell lymphoma, with cutaneous infiltration and extensive dyschromia on his lower limbs. Skin biopsies revealed the presence of sarcoid granulomas associated with the recurrence of the lymphoma, confirmed by immunostaining and molecular analysis. Although a new scheme of chemotherapy was started, he died 18 months later. There are two different patterns of skin granulomas associated with lymphoma: granulomatous infiltrates admixed with neoplastic cells and cutaneous granulomas constituting a nonspecific manifestation of the underlying lymphoma, but presently there is no evidence supporting their relationship with lymphoma prognosis.A presença de granulomas cutâneos associados a linfomas é um fenômeno raro, mas bem conhecido. Um homem, 44 anos de idade, com diagnóstico prévio de linfoma de células T periférico, foi enviado à nossa consulta por infiltração cutânea e extensa discromia nos membros inferiores. A biopsia cutânea revelou a presença de granulomas epitelioides associados à recidiva do linfoma, confirmada pela marcação imuno-histoquímica e estudo molecular. Apesar de iniciado novo esquema de quimioterapia, o doente faleceu 18 meses depois. Na literatura são descritos dois tipos de granulomas cutâneos na presença de linfomas: associados à infiltração cutânea pelo linfoma ou como uma manifestação não específica do linfoma. Contudo, atualmente não há evidência que suporte a sua relação com o prognóstico dos linfomas.

Ana Rita Travassos; João Borges-Costa; João Raposo; Luís Soares Almeida; Paulo Filipe

2012-01-01

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Intravascular catheter preparation and dispensing container assembly  

UK PubMed Central (United Kingdom)

A transparent intravascular catheter preparation and dispensing container assembly has a main housing compartment with an opening detachably covered to permit the hand to remove part of the catheter therefrom with a bumper, which can be rotatable, to prevent catheter crimping, and basin beneath a catheter port to enhance liquid visibility; and has a connector compartment housing the more proximal catheter portion which is detachably covered to allow hand removal of the catheter portion therefrom, with a slotted washer mounted between said compartments to receive the catheter; a transparent glove surrounding a more distal catheter section with pleated sections of alternating sizes; a proximal glove washer with distal funnel bore to facilitate catheter retraction and a tapered proximal exterior to facilitate taping it to the catheter after catheter insertion; a distal glove collar with a catheter guide tube mounted therein; a trough housing the glove at an upward angle, trough chambers covered by detachable lids and sized to permit the hand to grasp a glove portion to retract and remove the catheter; a test chamber with a cavity to receive the catheter distal balloon for leak testing; a tube connecting the test chamber and trough, with a catheter conduit, and a gas escape conduit extending from the test cavity top and the high point of the tube catheter conduit; an introducer tube with a recess to receive the guide tube; the catheter is initially coiled and spaced from a main housing wall to abut the wall when the catheter is retracted from the test cavity a predetermined distance to prevent further retraction, which is accomplished in one modification with the catheter coiled twice, in another modification the main housing has a bulge with the catheter initially abutting a housing wall so that when the catheter retracts a predetermined length it abuts the bulge.

LYNN LAWRENCE A

174

An open system for intravascular ultrasound imaging.  

UK PubMed Central (United Kingdom)

Visualization of the blood vessels can provide valuable morphological information for diagnosis and therapy strategies for cardiovascular disease. Intravascular ultrasound (IVUS) is able to delineate internal structures of vessel wall with fine spatial resolution. However, the developed IVUS is insufficient to identify the fibrous cap thickness and tissue composition of atherosclerotic lesions. Novel imaging strategies have been proposed, such as increasing the center frequency of ultrasound or using a modulated excitation technique to improve the accuracy of diagnosis. Dual-mode tomography combining IVUS with optical tomography has also been developed to determine tissue morphology and characteristics. The implementation of these new imaging methods requires an open system that allows users to customize the system for various studies. This paper presents the development of an IVUS system that has open structures to support various imaging strategies. The system design is based on electronic components and printed circuit board, and provides reconfigurable hardware implementation, programmable image processing algorithms, flexible imaging control, and raw RF data acquisition. In addition, the proposed IVUS system utilized a miniaturized ultrasound transducer constructed using PMNPT single crystal for better piezoelectric constant and electromechanical coupling coefficient than traditional lead zirconate titanate (PZT) ceramics. Testing results showed that the IVUS system could offer a minimum detectable signal of 25 ?V, allowing a 51 dB dynamic range at 47 dB gain, with a frequency range from 20 to 80 MHz. Finally, phantom imaging, in vitro IVUS vessel imaging, and multimodality imaging with photoacoustics were conducted to demonstrate the performance of the open system.

Qiu W; Chen Y; Li X; Yu Y; Cheng WF; Tsang FK; Zhou Q; Shung KK; Dai J; Sun L

2012-10-01

175

An Open System for Intravascular Ultrasound Imaging  

Science.gov (United States)

Visualization of the blood vessels can provide valuable morphological information for diagnosis and therapy strategies for cardiovascular disease. Intravascular ultrasound (IVUS) is able to delineate internal structures of vessel wall with fine spatial resolution. However, the developed IVUS is insufficient to identify the fibrous cap thickness and tissue composition of atherosclerotic lesions. Novel imaging strategies have been proposed, such as increasing the center frequency of ultrasound or using a modulated excitation technique to improve the accuracy of diagnosis. Dual-mode tomography combining IVUS with optical tomography has also been developed to determine tissue morphology and characteristics. The implementation of these new imaging methods requires an open system that allows users to customize the system for various studies. This paper presents the development of an IVUS system that has open structures to support various imaging strategies. The system design is based on electronic components and printed circuit board, and provides reconfigurable hardware implementation, programmable image processing algorithms, flexible imaging control, and raw RF data acquisition. In addition, the proposed IVUS system utilized a miniaturized ultrasound transducer constructed using PMN-PT single crystal for better piezoelectric constant and electromechanical coupling coefficient than traditional lead zirconate titanate (PZT) ceramics. Testing results showed that the IVUS system could offer a minimum detectable signal of 25 ?V, allowing a 51 dB dynamic range at 47 dB gain, with a frequency range from 20 to 80 MHz. Finally, phantom imaging, in vitro IVUS vessel imaging, and multimodality imaging with photoacoustics were conducted to demonstrate the performance of the open system.

Qiu, Weibao; Chen, Yan; Li, Xiang; Yu, Yanyan; Cheng, Wang Fai; Tsang, Fu Keung; Zhou, Qifa; Shung, K. Kirk; Dai, Jiyan; Sun, Lei

2013-01-01

176

Linfoma leptomeníngeo en un niño con infección por el virus de la inmunodeficiencia humana  

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Full Text Available Abstract in spanish El linfoma primario del sistema nervioso central en pacientes pediátricos VIH positivos es poco frecuente. Se presenta un paciente, de siete años de edad, de sexo masculino, con síndrome de inmunodeficiencia adquirida, que desarrolló un linfoma de células B con localización leptomeníngea. El niño inició el cuadro con síntomas de alteración del sensorio, hipertensión endocraneana y amaurosis bilateral. El diagnóstico se efectuó por biopsia cerebral, inmunofen (more) otipo de las células B del líquido cefalorraquídeo, además de PCR positiva para virus de Epstein Barr en el líquido. Realizó tratamiento con quimioterapia intratecal y sistémica. Mejoraron los síntomas durante quince meses y luego recidivó en la región talámica. Cumplió radioterapia craneoespinal y falleció cuatro meses después de la recidiva. En este artículo se realiza una revisión de la bibliografía sobre esta enfermedad, señalando el carácter excepcional de este paciente por tratarse de un linfoma localizado en forma exclusiva en el sistema nervioso central y, más precisamente, en la leptomeninges. Abstract in english Primary non-Hodgkin lymphoma in the central nervous system is rare in children and in AIDS pediatric patients. We report a seven years old boy, HIV-positive, C3 stage, who developed a non- Hodgkin lymphoma in the central nervous system, with leptomeningeal location. The patient started with signs and symptoms related to increased intracranial pressure, his conscience worsened and he became blind. The diagnosis was made through brain biopsy, immunophenotype of B cells in c (more) erebrospinal fluid, and PCR for Epstein Barr virus in the fluid. The boy was treated with intrathecal and systemic chemotherapy. His condition improved during fifteen months, and then he presented a talamic relapse. He was treated with radiotherapy and finally died four months later. In this article we review the literature about this disease, pointing to the exceptional nature of this patient because of his lymphoma exclusively located in the central nervous system, specifically leptomeningeal.

Scrigni, Adriana; Nastri, Mariana; Rodríguez de Schiavi, Susana; Czornyj, Liliana; Felice, María; Mantese, Beatriz

2004-10-01

177

Linfoma difuso primario de hígado: Presentación de un caso Diffuse primary hepatic lymphoma: Case report  

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Full Text Available El linfoma primario de hígado (LPH) es un tumor raro y representa menos del 1% de los linfomas no Hodgkin extranodales de células B. Se reporta un caso de LPH en un paciente de sexo masculino de 32 años de edad, sin enfermedad hepática crónica, que ingresa a nuestra institución por sospecha de síndrome mononucleósico. La serología para Virus Epstein Barr fue positiva. Se observó mediante ecografía hepatoesplenomegalia con parénquima hepático heterogéneo en forma difusa. La RM demostró hepatoesplenomegalia y alteraciones en lóbulo derecho hepático, compatibles con infiltración linfoproliferativa. Se realizó biopsia hepática con guía ecográfica y el estudio histopatológico reveló un linfoma no Hodgkin difuso de células grandes con inmunofenotipo B. Se presentan las características clínicas y patológicas del caso, así como una revisión de los aspectos clínicos, hallazgos patológicos y radiológicos.Primary hepatic lymphoma (PHL) is a rare tumor that represents less than 1% of extranodal non-Hodgkin B-cell lymphoma. We report a case of PHL in a 32 year-old male patient without chronic liver disease, who was admitted into our institution for suspected mononucleosis syndrome. Serology for Epstein-Barr virus was positive. Ultrasound revealed hepatosplenomegaly with diffuse heterogeneous liver parenchyma. The MRI showed hepatosplenomegaly and alterations in the right lobe of the liver compatible with lymphoproliferative infiltration. Liver biopsy was performed under ultrasound guidance, and histopathologic examination revealed a diffuse non-Hodgkin lymphoma of large cells with immunophenotype B. A clinical and a pathological case as well as a review of the clinical, pathological and radiological findings of this disease are presented.

Silvana I. Romero Vidomlansky; Ana Julia Nielsen; Juan Cruz Gallo; Shigeru Kozima

2011-01-01

178

Linfoma difuso primario de hígado: Presentación de un caso/ Diffuse primary hepatic lymphoma: Case report  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish El linfoma primario de hígado (LPH) es un tumor raro y representa menos del 1% de los linfomas no Hodgkin extranodales de células B. Se reporta un caso de LPH en un paciente de sexo masculino de 32 años de edad, sin enfermedad hepática crónica, que ingresa a nuestra institución por sospecha de síndrome mononucleósico. La serología para Virus Epstein Barr fue positiva. Se observó mediante ecografía hepatoesplenomegalia con parénquima hepático heterogéneo en f (more) orma difusa. La RM demostró hepatoesplenomegalia y alteraciones en lóbulo derecho hepático, compatibles con infiltración linfoproliferativa. Se realizó biopsia hepática con guía ecográfica y el estudio histopatológico reveló un linfoma no Hodgkin difuso de células grandes con inmunofenotipo B. Se presentan las características clínicas y patológicas del caso, así como una revisión de los aspectos clínicos, hallazgos patológicos y radiológicos. Abstract in english Primary hepatic lymphoma (PHL) is a rare tumor that represents less than 1% of extranodal non-Hodgkin B-cell lymphoma. We report a case of PHL in a 32 year-old male patient without chronic liver disease, who was admitted into our institution for suspected mononucleosis syndrome. Serology for Epstein-Barr virus was positive. Ultrasound revealed hepatosplenomegaly with diffuse heterogeneous liver parenchyma. The MRI showed hepatosplenomegaly and alterations in the right lob (more) e of the liver compatible with lymphoproliferative infiltration. Liver biopsy was performed under ultrasound guidance, and histopathologic examination revealed a diffuse non-Hodgkin lymphoma of large cells with immunophenotype B. A clinical and a pathological case as well as a review of the clinical, pathological and radiological findings of this disease are presented.

Romero Vidomlansky, Silvana I.; Nielsen, Ana Julia; Gallo, Juan Cruz; Kozima, Shigeru

2011-06-01

179

Linfoma cerebral en paciente postrasplante renal/ Primary brain lymphoma in a patient after renal transplantation  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish El linfoma primario del sistema nervioso central (LPSNC) ha tenido un aumento en la incidencia en los últimos 40 años asociado con estados de inmunosupresión, principalmente en pacientes infectados con el virus de inmunodeficiencia humana (VIH) y con trasplante de órganos. La tumorogénesis se relaciona con el virus de Epstein Barr (VEB). El inmunofenotipo más frecuente es el linfoma de células B. Las manifestaciones clínicas son dependientes de la localización de (more) la masa tumoral, principalmente trastornos del comportamiento y síndrome de hipertensión endocraneana. El diagnóstico diferencial etiológico se hace con procesos infecciosos, enfermedad cerebrovascular (ECV), tumores primarios gliales del sistema nervioso central y metástasis cerebrales. Al diagnóstico se llega a través de imágenes diagnósticas principalmente resonancia magnética (RM ) cerebral y con estudio histopatológico. Es importante descartar infección por VIH al hacerse diagnóstico de LPSNC. En esta revisión reportamos un linfoma primario del SNC en una paciente con antecedente de trasplante renal por enfermedad poliquística ocho años antes. Abstract in english The incidence of primary central nervous system lymphoma (PCNSL) has increased during the past 40 years. This has been associated with immunodeficiency, mainly in patients infected with the human immunodeficiency virus (HIV) and in transplant patients. Tumor genesis is related with the Epstein-Barr virus (EBV). The most frequent PCNSL immunophenotype is B-cell lymphoma. Clinical manifestations depend on tumor localization, and are usually behavior dysfunctions and intracr (more) anial hypertension syndrome. Differential diagnosis must take into consideration infectious processes, stroke, primary brain tumors, and metastases. The diagnosis of PCNSL requires brain MRI and brain biopsy. It is important to assess HIV infection when diagnosing PCNSL. This review reports a case of primary brain lymphoma in a patient who underwent renal transplantation due to polycystic kidney disease 8 years before.

Arteaga, Carlos; Duarte, Mónica; Bayona, Hernán; Andrade, Rafael; López, Rocío; Bermúdez, Sonia

2009-03-01

180

Linfoma cerebral en paciente postrasplante renal Primary brain lymphoma in a patient after renal transplantation  

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Full Text Available El linfoma primario del sistema nervioso central (LPSNC) ha tenido un aumento en la incidencia en los últimos 40 años asociado con estados de inmunosupresión, principalmente en pacientes infectados con el virus de inmunodeficiencia humana (VIH) y con trasplante de órganos. La tumorogénesis se relaciona con el virus de Epstein Barr (VEB). El inmunofenotipo más frecuente es el linfoma de células B. Las manifestaciones clínicas son dependientes de la localización de la masa tumoral, principalmente trastornos del comportamiento y síndrome de hipertensión endocraneana. El diagnóstico diferencial etiológico se hace con procesos infecciosos, enfermedad cerebrovascular (ECV), tumores primarios gliales del sistema nervioso central y metástasis cerebrales. Al diagnóstico se llega a través de imágenes diagnósticas principalmente resonancia magnética (RM ) cerebral y con estudio histopatológico. Es importante descartar infección por VIH al hacerse diagnóstico de LPSNC. En esta revisión reportamos un linfoma primario del SNC en una paciente con antecedente de trasplante renal por enfermedad poliquística ocho años antes.The incidence of primary central nervous system lymphoma (PCNSL) has increased during the past 40 years. This has been associated with immunodeficiency, mainly in patients infected with the human immunodeficiency virus (HIV) and in transplant patients. Tumor genesis is related with the Epstein-Barr virus (EBV). The most frequent PCNSL immunophenotype is B-cell lymphoma. Clinical manifestations depend on tumor localization, and are usually behavior dysfunctions and intracranial hypertension syndrome. Differential diagnosis must take into consideration infectious processes, stroke, primary brain tumors, and metastases. The diagnosis of PCNSL requires brain MRI and brain biopsy. It is important to assess HIV infection when diagnosing PCNSL. This review reports a case of primary brain lymphoma in a patient who underwent renal transplantation due to polycystic kidney disease 8 years before.

Carlos Arteaga; Mónica Duarte; Hernán Bayona; Rafael Andrade; Rocío López; Sonia Bermúdez

2009-01-01

 
 
 
 
181

LINFOMA CUTÁNEO DE CÉLULAS B TIPO CENTRO FOLICULAR CON INFILTRACIÓN A MÉDULA ÓSEA: REPORTE DE UN CASO LINFOMA CUTÂNEO DE CÉLULAS B TIPO CENTRO FOLICULAR COM INFILTRAÇÃO NA MEDULA ÓSSEA PRIMARY CUTANEOUS FOLLICLE CENTER LYMPHOMA WITH BONE MARROW INFILTRATION: RELATÓRIO DE UM CASO  

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Full Text Available Los linfomas cutáneos primarios de células B constituyen cerca del 2025% de todos los linfomas. El linfoma cutáneo primario de células B tipo centro folicular es el subtipo más frecuente y se manifiesta principalmente en pacientes adultos con una edad media de 58 años (1), la diseminación extracutánea es muy rara y se presenta con nódulos, tumores o placas solitarios o en grupo usualmente localizados en cabeza o tronco. Presentamos el caso de una paciente con un linfoma primario cutáneo tipo centro folicular con infiltración a médula ósea.Os linfomas cutâneos primários de células B constituem cerca de 20 a 25% de todos os linfomas. O linfoma cutâneo primário de células B tipo centro folicular é o subtipo mais frequente e manifestase principalmente em pacientes adultos com uma idade média de 58 anos (1), a disseminação extracutânea é muito rara e apresentase com nódulos, tumores ou placas solitárias no grupo usualmente localizados na cabeça ou tronco. Apresentamos o caso de uma paciente com um linfoma primário cutâneo tipo centro folicular com infiltração na medula óssea.Primary B cell cutaneous lymphomas represent approximately 2025% of all lymphomas. Primary cutaneous follicle center lymphoma is the most common subtype occurring in adults with a mean age of 58 years. The disease typically presents with solitary plaques or nodules and is usually located in the head or trunk. Extra cutaneous dissemination is extremely rare. We present a case of a patient with primary cutaneous follicle center lymphoma with bone marrow infiltration.

CLAUDIA MARCELA ARENAS SOTO; MARÍA LILIANA MARIÑO ÁLVAREZ; JORGE ENRIQUE CALDERÓN GÓMEZ; MARÍA ISABEL GONZÁLEZ C; MARTHA PATRICIA ROBAYO

2012-01-01

182

Linfomas primarios de testículo: Análisis clínicopatológico de 10 casos. Experiencia en el Instituto Nacional de Cancerología  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish El linfoma no-Hodgkin (LNH) es la neoplasia testicular más común en hombres viejos y rara en hombres jóvenes. La gran mayoría de los linfomas primarios de testículo (LPT) es clasificada como linfomas de grado intermedio o alto. Objetivo: describir las características clínicas, morfológicas e inmunofenotípicas de los LPT atendidos en un hospital de referencia. Material y métodos: de 1986 a 1999 se revisaron los casos de LPT. Se analizaron los datos clínicos, est (more) udios de laboratorio, evolución, tratamiento y se realizaron cortes en blanco para estudios de inmunohistoquímica (IH). Resultados: se incluyeron 10 pacientes con diagnóstico de LPT. El promedio de edad fue de 62.3 años (margen 42-81), en nueve pacientes se realizó orquiectomía como modalidad terapéutica inicial. Otros tratamientos posteriores al diagnóstico fueron; quimioterapia (60%) y radioterapia (20%). Histológicamente, los testículos mostraron infiltración difusa por células grandes de estirpe linfoide. Basados en la clasificación de la REAL, todos los casos fueron clasificados como linfomas difusos de células grandes. En ocho casos se realizó estudio de IH; 7/8 tumores expresaron inmunofenotipo B y sólo un caso inmunofenotipo T. Abstract in english Non-Hodgkin lymphoma is the most common primary testicular neoplasm of older men but is rare in young men. The vast majority of primary testicular lymphomas (PTL) are intermediate- to high-grade lymphomas. Objective: to describe the clinical, morphologic, and immunophenotypic characteristics of PTL seen in a referral center. Material and Methods: we reviewed the cases of PTL seen from 1986 to 1999. We obtained data of laboratory tests, clinical course, treatment, and immu (more) nohistochemical studies. Results: 10 patients with diagnosis of PTL were identified. Median age was 62.3 years (range 42-81 years), and nine patients underwent orchiectomy as initial therapeutic procedure. Other treatment modalities after diagnosis included combination chemotherapy (60%) and combination radiotherapy (20%). Histologically, testes showed diffuse dense infiltration of large lymphoma cells. All cases were classified as diffuse large cell lymphoma according to REAL classification. Eight cases were studied with use of paraffin-section immunoperoxidase, 7/8 tumors were B-lineage lymphomas, and one was a T-lineage lymphoma.

Avilés Salas, Alejandro; Turbiner Miasnikova, Julia; Labardini Méndez, Juan R.; Sobrevilla Calvo, Pedro de J.

2004-04-01

183

Linfoma no Hodgkin laríngeo: Reporte de un caso/ Laryngeal non Hodgkin Lymphoma: Case Report  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Los linfomas de la laringe son infrecuentes, correspondiendo a menos del 1% de las neoplasias de esta ubicación. La detección temprana puede permitir una mejor atención y eventualmente un mejor pronóstico. Se presenta un caso de linfoma no Hodgkin supraglótico derecho, correspondiente a una paciente de sexo femenino de 68 años, que consulta por disfonía progresiva de varios meses de evolución que se intensifica durante el último mes. La nasofibroscopía mostró u (more) na lesión tumoral que comprometía el repliegue aritenoepiglótico derecho, con mucosa sana. La tomografía axial computarizada objetivó un tumor de hemilaringe derecha de aspecto sólido que se extendía desde la base de la epiglotis hasta la glotis. La resonancia magnética informó un proceso expansivo que comprometía la región supraglótica derecha, de aspecto benigno, sin infiltración. Se extirpó un tumor submucoso en su totalidad por tirotomía media. En el examen histopatológico se observaron elementos compatibles con linfoma no Hodgkin difuso, lo que fue confirmado por técnica de inmunohistoquímica. Se trató con esquema CHOP de quimioterapia. No ha habido recidiva tumoral al 3° año de seguimiento. Los linfomas no Hodgkin de laringe son poco frecuentes. Se describen las características y manejo de este tipo de tumores. Abstract in english Lymphomas of the larynx are rare, accounting for less than 1%% of neoplasms in this location. Early detection can allow better care, and possibly a better prognosis. We present a case of a right supraglottic Non-Hodgkin Lymphoma, corresponding to a female patient of 68 years who consulted for hoarseness of several months that progressed during the last month. Fibroscopic evaluation showed a tumor involving the right aryepiglottic fold, without mucosal lesion. Computed tom (more) ography showed a solid tumor of the right hemilarynx, that extends from base of epiglottis to glottis. Magnetic resonance showed tumor expansion process that involves the right epiglottic region, of benign appearence, without infiltration. We perform a complete removal of the submucosal tumor externally by a medial laryngeal thyroidotomy. Histopathological examination showed elements compatible with diffuse Non-Hodgkin Lymphoma, which was confirmed by immunohistochemestry. CHOP chemotherapy was indicated. Currently, patient followed up for 3 years, with no signs of tumor recurrence. Non-Hodgkin Lymphomas of the larynx are rare. We describe the characteristics and management of these tumors.

Osorio M, Jaime; Faraggi A, Marcelo; Cardemil M, Felipe

2013-04-01

184

Psoriasis, lymphoma and etanercept: is there a correlation? Psoríase, linfoma e etanercepte: existe correlação?  

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Full Text Available Psoriasis is a chronic inflammatory disease that can affect skin and joints. Their treatment varies depending on the severity and includes topical and systemic. Among the latter are the immunobiological that target the T cell We report a case that demonstrates the close relationship between psoriasis, lymphoma and biologic therapies.A psoríase é uma doença inflamatória crônica que pode afetar a pele e as articulações. Seu tratamento varia conforme a gravidade e inclui medicamentos tópicos e sistêmicos. Dentre os últimos estão os imunobiológicos, que têm como alvo a célula T. Relatamos um caso que demonstra a estreita relação entre a psoríase, o linfoma e os imunobiológicos.

Ludmilla Queirós Miranda; Aline Lopes Bressan; Fernanda Valente da Silva Rehfeldt; Bárbara Nader Vasconcelos; Alexandre Carlos Gripp

2012-01-01

185

La crítica de Hicks al Tratado del Dinero de Keynes  

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Full Text Available El objetivo de este artículo es mostrar que la crítica que hace Hicks al Tratado del Dinero de Keynes es incorrecta. Para ello, presentamos el modelo de Keynes, mostrando que la igualdad entre la inversión y el ahorro es una condición de equilibrio monetario y no una identidad. Este resultado no puede ser obtenido en el análisis de Hicks.

Alexander Tobón

2004-01-01

186

Medio ambiente en el Tratado de Libre Comercio  

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Full Text Available Se muestran las relaciones entre la dinámica del medio ambiente y el libre comercio con ocasión de la entrada del Tratado de Libre Comercio TLC de Colombia con los Estados Unidos. Se presentan las dos posturas tanto ambientalista como comercialista y escenarios de conciliación de las mismas.

Juan Pablo Galeano Rey

2006-01-01

187

[Bifurcation coronary stenting guided by intravascular diagnostic tools].  

UK PubMed Central (United Kingdom)

Results of coronary bifurcation stenting guided by intravascular diagnostic tools were searched. 85 patients took part in the study, there were generated two groups. In the research group intravascular ultrasound of main vessel has revealed stent malapposition in 97.6%. Fractional flow reserve of jailed side branch ostium is less then 0.75 in 7.1% only, despite of the average 78 +/- 4% narrowing. Severe cardiac events in research group during long-term clinical follow-up were better in research group: 6.9% vs 32.5% (p < 0.05).

Ivanov VA; Beliakin SA; Ma?skov VV; Ivanov AV; Smirnov VL; Permiakov SV

2011-12-01

188

Primary MALT lymphomas of the stomach: A pathological study of 18 cases/ Linfomas gástricos primarios tipo MALT: un estudio patológico de 18 casos  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Objetivo: es difícil que alguien que padezca un linfoma gástrico de tipo MALT pueda librarse de la enfermedad,... a menos que se le trate con medicación para Helicobacter pylori. Material y métodos: se analizó una cohorte de 18 pacientes. Diez huéspedes tenían linfoma gástrico de tipo MALT y se trataron con resección gástrica como tratamiento inicial. Ocho recibieron antibióticos frente a Helicobacter pylori como tratamiento inicial. En los 18 pacientes se eval (more) uaron la presencia de Helicobacter pylori, los hallazgos endoscópicos y los rasgos patológicos. Se realizó una inmunohistoquímica para valorar el bcl-2 y el p53. Resultados: los pacientes con linfoma MALT de grado bajo: a) dieron positivo a Helicobacter pylori (5 de 5); b) tenían una lesión superficial (5 de 5); c) no tenían afectados los ganglios linfáticos (5 de 5); y d) se estadificaron a la baja por comparación con los pacientes con tumores de grado alto. El bcl-2 fue positivo en 4 de los 5 tumores de grado bajo y el p53 fue positivo en 12 de 13 de los de grado alto. El estudio de los pacientes durante un seguimiento de 5 años (n = 18) reveló que todos los tumores menos uno de grado bajo siguieron siendo superficiales sin progresión. Estos tumores eran bcl-2+/p53-, mientras que el único con inmunofenotipo bcl-2+/p53+ progresó hasta convertirse en un tumor de bajo grado ulcerado tras la desaparición de Helicobacter pylori. Se observó una regresión completa en 6 de los 8 pacientes del grupo no tratado con cirugía (n = 8) tras la erradicación de Helicobacter pylori. Estos tumores eran superficiales, de bajo grado, con ganglios negativos y bcl-2+/p53 no concluyente (n = 2); superficiales, de bajo grado, con ganglios negativos y bcl-2+/p53- (n = 2), y ulcerativos, de grado alto, con ganglios negativos y bcl-2+/p53- (n = 2). Los dos tumores persistentes eran ulcerativos, de grado alto con ganglios negativos y bcl-2+/p53+. Conclusión: el linfoma gástrico de tipo MALT, Helicobacter pylori-positivo, superficial, de grado bajo y bcl-2+/p53- desaparece tras la erradicación de Helicobacter pylori. Abstract in english Aim: it is doubtful that whoever is suffering from gastric malt lymphoma will escape from the disease, if treated with medication against helicobacter pylori. Material and methods: a cohort of 18 patients was analysed. Ten hosts had primary gastric malt lymphoma and were treated with gastric resection as the initial therapy. Eight hosts received antibiotics against Helicobacter pylori as the initial treatment. In all 18 patients Helicobacter pylori status, endoscopic find (more) ings and pathology features were evaluated. Immunohistochemistry was performed to assess the bcl-2 and p53 status. Results: patients with low grade malt lymphoma: a) were Helicobacter pylori positive (5 of 5); b) had a superficial lesion (5 of 5); c) had no lymph node involvement (5 of 5); and d) were downstaged by comparison to patients with high grade tumor. Bcl-2 was positive in 4 of 5 low grade tumors, and p53 was positive in 12 of 13 high grade ones. Investigation of patients with 5-year follow up (n = 18) revealed that all but one low-grade tumors remained superficial with no progression. These tumors were bcl-2+/p53-, and the one with a bcl-2+/p53+ immunophenotype progressed to an ulcerated low-grade tumor after disappearance of Helicobacter pylori. Complete regression was found in 6 of 8 patients from the non surgically treated group (n = 8) after Helicobacter pylori eradication. These tumors were superficial/low grade/node negative/bcl-2+/p53 inconclusive (n = 2), superficial/low grade/node negative/bcl-2+/p53- (n = 2), and ulcerative/high grade/node negative/bcl-2+/p53- (n = 2). The two persistent tumors were ulcerative/high grade/node negative/bcl-2+/p53+. Conclusion: gastric malt lymphoma Helicobacter pylori+/superficial/low grade/bcl-2+/p53- will disappear after Helicobacter pylori eradication.

Venizelos, I.; Tamiolakis, D.; Lambropoulou, M.; Bolioti, S.; Nikolaidou, S.; Alexiadis, G.; Papadopoulos, N.

2007-05-01

189

Hiperplasia endotelial papilar intravascular oral: uma entidade rara/ Intravascular papillary endothelial hyperplasia: a rare entity  

Scientific Electronic Library Online (English)

Full Text Available Abstract in portuguese A hiperplasia endotelial papilar intravascular (HEPI) é uma lesão vascular reativa caracterizada pela proliferação endotelial excessiva localizada no interior de vasos sangüíneos comumente dilatados, associada a trombos em organização, ou secundária a outras lesões vasculares, como hemangiomas e granulomas piogênicos. A HEPI é um achado incomum na cavidade oral, onde os lábios são o principal sítio de acometimento, e surge clinicamente sob a forma de nódul (more) os azulados de aspecto clínico semelhante ao de lesões como hemangioma, mucocele e varicosidades. Sob o aspecto histopatológico, observam-se projeções papilares de tecido conjuntivo fibroso revestidas por uma ou duas camadas de células endoteliais no interior de um lúmen vascular. A principal peculiaridade da HEPI reside em sua semelhança histológica com o angiossarcoma e na possível interpretação errônea como neoplasia maligna. Neste artigo, os autores descrevem um caso de HEPI oral e realizam uma breve revisão da literatura, enfatizando suas características histopatológicas e o diagnóstico diferencial. Abstract in english Intravascular papillary endothelial hyperplasia (IPEH) is a reactive vascular lesion characterized by excessive endothelial proliferation within a vascular lumen of commonly dilated vessels, associated to organizing thrombi or even secondary to other vascular lesions, such as hemagiomas and pyogenic granulomas. Oral lesions of IPEH are uncommon, being lips the most frequent site, followed by, in decreasing frequency, tongue and buccal mucosa. Clinically, IPEH appears as b (more) luish nodules that resembles clinical features of lesions as hemangioma, mucocele and varice. On histopathological examination, IPEH presents as papillary projections composed by a fibrous core lined by one or two layers of plump endothelial cells, without evidence of celullar pleomorphism, mitotic activity or necrosis. The mean peculiarity of IPEH is its histologic similarity to angiosarcoma and possible misinterpretation with malignant neoplasm. In this article, the author describe a rare case of oral IPEH and review of literature, emphasizing its histopathologic features and diferencial diagnosis.

Goulart Filho, João Augusto Vianna; Pereira, Karuza Maria Alves; Galvão, Hébel Cavalcanti

2006-02-01

190

Hiperplasia endotelial papilar intravascular oral: uma entidade rara Intravascular papillary endothelial hyperplasia: a rare entity  

Directory of Open Access Journals (Sweden)

Full Text Available A hiperplasia endotelial papilar intravascular (HEPI) é uma lesão vascular reativa caracterizada pela proliferação endotelial excessiva localizada no interior de vasos sangüíneos comumente dilatados, associada a trombos em organização, ou secundária a outras lesões vasculares, como hemangiomas e granulomas piogênicos. A HEPI é um achado incomum na cavidade oral, onde os lábios são o principal sítio de acometimento, e surge clinicamente sob a forma de nódulos azulados de aspecto clínico semelhante ao de lesões como hemangioma, mucocele e varicosidades. Sob o aspecto histopatológico, observam-se projeções papilares de tecido conjuntivo fibroso revestidas por uma ou duas camadas de células endoteliais no interior de um lúmen vascular. A principal peculiaridade da HEPI reside em sua semelhança histológica com o angiossarcoma e na possível interpretação errônea como neoplasia maligna. Neste artigo, os autores descrevem um caso de HEPI oral e realizam uma breve revisão da literatura, enfatizando suas características histopatológicas e o diagnóstico diferencial.Intravascular papillary endothelial hyperplasia (IPEH) is a reactive vascular lesion characterized by excessive endothelial proliferation within a vascular lumen of commonly dilated vessels, associated to organizing thrombi or even secondary to other vascular lesions, such as hemagiomas and pyogenic granulomas. Oral lesions of IPEH are uncommon, being lips the most frequent site, followed by, in decreasing frequency, tongue and buccal mucosa. Clinically, IPEH appears as bluish nodules that resembles clinical features of lesions as hemangioma, mucocele and varice. On histopathological examination, IPEH presents as papillary projections composed by a fibrous core lined by one or two layers of plump endothelial cells, without evidence of celullar pleomorphism, mitotic activity or necrosis. The mean peculiarity of IPEH is its histologic similarity to angiosarcoma and possible misinterpretation with malignant neoplasm. In this article, the author describe a rare case of oral IPEH and review of literature, emphasizing its histopathologic features and diferencial diagnosis.

João Augusto Vianna Goulart Filho; Karuza Maria Alves Pereira; Hébel Cavalcanti Galvão

2006-01-01

191

Burkitt's lymphoma of the duodenum in a patient with AIDS/ Linfoma de Burkitt do duodeno em um paciente com AIDS  

Scientific Electronic Library Online (English)

Full Text Available Abstract in portuguese O linfoma não-Hodgkin de células B é a segunda neoplasia mais comum em pacientes com infecção pelo vírus da imunodeficiência humana depois do sarcoma de Kaposi. A maioria dos casos de linfoma não-Hodgkin associados com a síndrome da imunodeficiência adquirida envolve locais extraganglionares, especialmente o trato digestivo e o sistema nervoso central. Nós relatamos um caso de linfoma primário do duodeno em um paciente com AIDS. Uma endoscopia digestiva alta m (more) ostrou massas pseudopolipóides encontradas na segunda porção do duodeno. Um estudo diagnóstico completo incluindo exames histológicos, imunohistoquímicos e virológicos mostrou um linfoma de células B tipo Burkitt. Detectou-se genoma do vírus Epstein-Barr em biópsias por hibridização in situ e imuno-histoquímica. Abstract in english Non-Hodgkin's lymphoma of B-cell type is the second most common neoplasm after Kaposi's sarcoma, among patients with human immunodeficiency virus infection. Most non-Hodgkin's lymphoma cases that are associated with acquired immunodeficiency syndrome involve extranodal sites, especially the digestive tract and the central nervous system. We report a case of primary lymphoma of the duodenum in a patient with AIDS. Upper gastrointestinal endoscopy revealed pseudopolypoid ma (more) sses found in the second portion of the duodenum. A complete diagnostic study including histological, immunohistochemical and virological analyses showed high-grade B-cell Burkitt's lymphoma. The Epstein-Barr virus genome was detected in biopsies by immunohistochemical and in situ hybridization.

Corti, Marcelo; Villafañe, María Florencia; Souto, Liliana; Schtirbu, Ricardo; Narbaitz, Marina; Soler, Marcela de Dios

2007-06-01

192

Bronquiolite obliterante com pneumonia em organização e aspergiloma em paciente com linfoma-leucemia de células T  

Directory of Open Access Journals (Sweden)

Full Text Available Há poucos relatos na literatura médica referentes à associação de bronquiolite obliterante com pneumonia em organização (BOPO) e aspergiloma. Apresenta-se uma associação de BOPO e aspergiloma pulmonar em uma paciente com linfoma-leucemia de células T do adulto. Sugere-se que os achados deste caso representam uma associação fortuita e não a expressão de unidade nosológica.

JHAYYA TERESA S.; PEREZ DOMINGO B.; LLARGES CELIA MALLART; FERREIRA RIMARCS G.

2000-01-01

193

Linfoma no Hodgkin de células grandes no hendidas de la cavidad bucal: Reporte de un caso  

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Full Text Available Los Linfomas No Hodgkin de la Cavidad Bucal son un grupo representativo de neoplasias que tienen diversidad en antecedentes, manera de presentación, respuesta al tratamiento y pronóstico. Se expone un caso evaluado en el Servicio de Clínica Estomatológica y en el Servicio de Cirugía Bucal de la Facultad de Odontología de la U.C.V., correspondiente a un paciente masculino de 81 años, con lesión de aspecto clínico tumoral en el reborde alveolar superior izquierdo. Basado en el estudio clínico, histopatológico e inmunohistoquímico, fue diagnosticado como Linfoma No Hodgkin de Células Grandes No Hendidas. La conducta a seguir después de realizado el diagnóstico fue, referencia al Hospital Oncológico Luis Razetti en donde le planificaron una combinación de tratamientos (Quimioterapia, Radioterapia).Oral Non Hodgkin limphoma constituted an infrequent type of neoplasia with variable presentation. A case maneged at the stomatologic clinic of the Faculty of Dentistry Central University of Venezuela is presented. An 81 years old male with an expansive in maxillar alveolar ridge. This patient was evaluated Clinical, Imageneo-logical, Histopathological, Inmuno-histochemically in order to establish the definitive diagnosis: Non Hodgkin limphomas. The patient was refferred to the oncology Hospital for treatment where chemotherapy and radiotherapy was applied.

Yuli Moret; Celenia Pérez; Helen Rivera

1999-01-01

194

The Role of Rituximab in Lymphomas O papel do Rituximab nos linfomas  

Directory of Open Access Journals (Sweden)

Full Text Available Over the last years the treatment of non-Hodgkin's lymphoma underwent a great advance in relation to the diagnosis, classification, high-dose chemotherapy, and hematopoietic stem cell transplantation. Simultaneously with this, there was the development of new drugs and support therapy which enabled an improvement in the evolution and survival of the patients. The use of monoclonal antibodies against cancer cells is an old idea and in this report the results of the role of the anti-CD20-Rituximab in lymphomas is discussed.Nos últimos anos o tratamento do linfomas não Hodgkin apresentou um grande avanço no diagnóstico, classificação, quimioterapia com altas doses e o transplante de células percursoras hematopoiéticas. Simultaneamente houve o desenvolvimento de novas drogas e no tratamento de suporte o que possibilita um avanço na evolução e sobrevida dos pacientes. A idéia do emprego de anticorpos monoclonais no tratamento do câncer é antiga e neste relato são apresentados os resultados e o papel do anti-CD20-Rituximab nos linfomas.

Bertrand Coiffier

2002-01-01

195

The Role of Rituximab in Lymphomas/ O papel do Rituximab nos linfomas  

Scientific Electronic Library Online (English)

Full Text Available Abstract in portuguese Nos últimos anos o tratamento do linfomas não Hodgkin apresentou um grande avanço no diagnóstico, classificação, quimioterapia com altas doses e o transplante de células percursoras hematopoiéticas. Simultaneamente houve o desenvolvimento de novas drogas e no tratamento de suporte o que possibilita um avanço na evolução e sobrevida dos pacientes. A idéia do emprego de anticorpos monoclonais no tratamento do câncer é antiga e neste relato são apresentados os resultados e o papel do anti-CD20-Rituximab nos linfomas. Abstract in english Over the last years the treatment of non-Hodgkin's lymphoma underwent a great advance in relation to the diagnosis, classification, high-dose chemotherapy, and hematopoietic stem cell transplantation. Simultaneously with this, there was the development of new drugs and support therapy which enabled an improvement in the evolution and survival of the patients. The use of monoclonal antibodies against cancer cells is an old idea and in this report the results of the role of the anti-CD20-Rituximab in lymphomas is discussed.

Coiffier, Bertrand

2002-01-01

196

Síndrome de enmascaramiento en un paciente con un linfoma primario del sistema nervioso central  

Directory of Open Access Journals (Sweden)

Full Text Available Se describe el caso de un varón de 37 años con un linfoma primario del sistema nervioso central y con múltiples localizaciones supra e infratentoriales. El paciente presentaba manifestaciones de inflamación intraocular como expresión de su neoplasia intracraneana (síndrome de enmascaramiento) y linfocitopenia con un recuento disminuido de CD4- como representación de una inmunodeficiencia cuya etiología no logramos identificar. El diagnóstico de linfoma se confirmó a través del estudio citológico del humor vítreo. El paciente falleció 10 meses después del comienzo de los síntomas.We report the case of a 37-year-old, white male with a primary central nervous system lymphoma with multiple supra and infratentorial locations. The patient developed manifestations of intraocular inflammation secondary to the intracranial neoplasm (masquerade syndrome) and lymphocytopenia -with a low CD4 cell count- representing an immunodeficiency state which etiology was undiagnosed. The diagnosis of lymphoma was established by vitreous cytology. The patient died 10 months after the beginning of the symptoms.

J. A. Mazzei; A. L. Campos; M. J. Melero; A. Schlaen; C. Argento; J. O. Zarate

2003-01-01

197

Eventos Cerebrais Isquémicos Recorrentes e Encefalopatia, Como Forma de Apresentação do Linfoma Difuso de Grandes Células B  

Scientific Electronic Library Online (English)

Full Text Available Abstract in portuguese Introdução: O linfoma difuso de grandes células B (LDGCB) é um subtipo raro de linfoma extranodal, sem atingimento habitual da medula óssea, sangue periférico ou líquor. O sistema nervoso central e a pele são os locais mais frequentemente afectados. O mau prognóstico e o reduzido tempo de sobrevida habitualmente inerentes a este linfoma re?ecte a sua agressividade e pode explicar a di?culdade de diagnóstico atempado. Os autores apresentam o caso cl (more) ínico de um doente com LDGCB do sistema nervoso em que a forma inicial de apresentação se traduziu por episódios transitórios de dé?ces neurológicos, simulando episódios isquémicos transitórios (AITs). Caso Clínico: Doente do sexo masculino, 54 anos, sem antecedentes patológicos de relevo, admitido por episódios transitórios de dé?ces sensitivo-motores. O estudo vascular inicial foi negativo. A Ressonância Magnética Cerebral (RMC) mostrou duas lesões inespeci?cas, uma no lobo frontal e outra na região periventricular. Um mês depois o doente desenvolve quadro de deterioração progressiva das funções cognitivas e paraparésia simétrica. Realizou EEG, que revelou encefalopatia; o doseamento sérico da desidrogenase do lactato, da proteína C reactiva e das proteínas totais no líquor estavam alteradas; foi excluído vasculite, neoplasia oculta, quadro infeccioso e doença autoimune. O doente desenvolveu um quadro de hiperbilurrubinémia, com hepatoesplenomegalia revelada por TC abdominal e a biópsia hepática mostrou in?ltração do parênquima hepático por linfoma difuso de células B gigantes. No período que se seguiu a este diagnóstico o doente iniciou um quadro rapidamente progressivo de encefalopatia e de falência multiorgânica, acabando por falecer ao 42º dia após a admissão. Conclusão: O caso clínico apresentado traduz a di?culdade inerente ao diagnóstico do linfoma angiotró?co. Realça-se a forma de manifestação invulgar da doença que mimetiza a presença de doença cerebrovascular.

Guimarães, Joana; Rosas, Maria José; Fonseca, Elsa

2008-01-01

198

Silent Intravascular Lymphoma Initially Manifesting as a Unilateral Adrenal Incidentaloma  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Intravascular large B-cell lymphoma (IVLBCL) is a rare subtype of malignant lymphoma. Although the involvement of adrenal glands in IVLBCL is often observed, primary adrenal IVLBCL is rare. Most reported cases of adrenal IVLBCL showed bilateral lesions resulting in rapidly progressive adrenal failur...

Takahashi, Yoshiko; Iida, Keiji; Hino, Yasuhisa; Ohara, Takeshi; Kurahashi, Toshifumi; Tashiro, Takashi; Chihara, Kazuo

199

Disseminated intravascular coagulation after isolated mild head injury.  

Digital Repository Infrastructure Vision for European Research (DRIVER)

A rare case is described of acute disseminated intravascular coagulation (DIC) following isolated mild head injury with acute subdural haematoma, coagulopathy onset preceding craniotomy. Surgical treatment of the cause followed by swift diagnosis and treatment soon after surgery enabled a good outco...

Pereira, EA; Green, AL; Chandran, H; Joshi, SM; Shlugman, D

200

Ultrasound-guided fetal intravascular transfusion in severe rhesus immunization.  

UK PubMed Central (United Kingdom)

The successful use of ultrasound-guided fetal umbilical venipuncture and direct intravascular transfusion in a case of severe hydrops fetalis at 28 weeks' gestational age is described. Complete reversal of the hydropic changes was observed in utero. The use of this new technique in fetal treatment of Rh disease is discussed.

Seeds JW; Bowes WA Jr

1986-05-01

 
 
 
 
201

Intravascular haemolysis and acute renal failure following potassium dichromate poisoning.  

Digital Repository Infrastructure Vision for European Research (DRIVER)

An 18-year-old girl developed acute renal failure 24 hr after ingestion of potassium dichromate. Laboratory data revealed associated intravascular haemolysis. Renal histology showed features suggestive of acute tubular necrosis. She went into diuretic phase after 11 days of oliguria and subsequently...

Sharma, B. K.; Singhal, P. C.; Chugh, K. S.

202

Multimode intravascular RF coil for MRI-guided interventions.  

UK PubMed Central (United Kingdom)

PURPOSE: To demonstrate the feasibility of using a single intravascular radiofrequency (RF) probe connected to the external magnetic resonance imaging (MRI) system via a single coaxial cable to perform active tip tracking and catheter visualization and high signal-to-noise ratio (SNR) intravascular imaging. MATERIALS AND METHODS: A multimode intravascular RF coil was constructed on a 6F balloon catheter and interfaced to a 1.5T MRI scanner via a decoupling circuit. Bench measurements of coil impedances were followed by imaging experiments in saline and phantoms. RESULTS: The multimode coil behaves as an inductively coupled transmit coil. The forward-looking capability of 6 mm was measured. A greater than 3-fold increase in SNR compared to conventional imaging using optimized external coil was demonstrated. Simultaneous active tip tracking and catheter visualization was demonstrated. CONCLUSION: It is feasible to perform 1) active tip tracking, 2) catheter visualization, and 3) high SNR imaging using a single multimode intravascular RF coil that is connected to the external system via a single coaxial cable.

Kurpad KN; Unal O

2011-04-01

203

Disseminated intravascular coagulation complicating HELLP syndrome: perioperative management  

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HELLP syndrome may lead to disseminated intravascular coagulation (DIC) which can make emergency surgery a serious challenge. A 29-year-old female presented with haematuria, epistaxis and hypertension in the emergency ward and a diagnosis of DIC complicating HELLP in preeclampsia was made. She had c...

Garg, Rakesh; Nath, M P; Bhalla, A P; Kumar, Ashwani

204

Reactive angioendotheliomatosis or intravascular histiocytosis? An immunohistochemical and ultrastructural study in two cases of intravascular histiocytic cell proliferation.  

Science.gov (United States)

Two elderly women with complex medical histories presented with erythematous patches, in one case involving the face and forearms, and in the other both elbows. Punch biopsies from both patients revealed intravascular proliferations of medium-sized and large cells with luminal occlusion typical of angioendotheliomatosis. Immunostaining did not show either lymphocytic or endothelial cell antigens but was consistent with a histiocytic differentiation of the intravascular cells in both cases, and was further substantiated by ultrastructural examination in one case. One patient received a course of cyclophosphamide therapy over 15 days. Skin lesions faded but did not disappear. The patient died 10 months later from cardiac and renal failure, which was most probably unrelated to the skin lesions. In the other case, lesions diminished but did not entirely resolve with treatment with low doses of oral prednisone. Angioendotheliomatosis can be divided into a malignant variant, which is an angiotropic lymphoma mostly of B-cell phenotype, and a benign, reactive variant, which is characterized by a proliferation of cells expressing endothelial cell markers. Only one case of angioendotheliomatosis with cells of histiocytic differentiation has been published previously under the name of intravascular histiocytosis. Our cases are very similar to the latter. The question arises as to whether intravascular histiocytic cell proliferation is a neoplastic proliferation of histiocytes or an early stage of classic reactive angioendotheliomatosis representing the residual cells associated with organization of microthrombi, which will be later followed by endothelial cell proliferation. PMID:10233274

Rieger, E; Soyer, H P; Leboit, P E; Metze, D; Slovak, R; Kerl, H

1999-03-01

205

Reactive angioendotheliomatosis or intravascular histiocytosis? An immunohistochemical and ultrastructural study in two cases of intravascular histiocytic cell proliferation.  

UK PubMed Central (United Kingdom)

Two elderly women with complex medical histories presented with erythematous patches, in one case involving the face and forearms, and in the other both elbows. Punch biopsies from both patients revealed intravascular proliferations of medium-sized and large cells with luminal occlusion typical of angioendotheliomatosis. Immunostaining did not show either lymphocytic or endothelial cell antigens but was consistent with a histiocytic differentiation of the intravascular cells in both cases, and was further substantiated by ultrastructural examination in one case. One patient received a course of cyclophosphamide therapy over 15 days. Skin lesions faded but did not disappear. The patient died 10 months later from cardiac and renal failure, which was most probably unrelated to the skin lesions. In the other case, lesions diminished but did not entirely resolve with treatment with low doses of oral prednisone. Angioendotheliomatosis can be divided into a malignant variant, which is an angiotropic lymphoma mostly of B-cell phenotype, and a benign, reactive variant, which is characterized by a proliferation of cells expressing endothelial cell markers. Only one case of angioendotheliomatosis with cells of histiocytic differentiation has been published previously under the name of intravascular histiocytosis. Our cases are very similar to the latter. The question arises as to whether intravascular histiocytic cell proliferation is a neoplastic proliferation of histiocytes or an early stage of classic reactive angioendotheliomatosis representing the residual cells associated with organization of microthrombi, which will be later followed by endothelial cell proliferation.

Rieger E; Soyer HP; Leboit PE; Metze D; Slovak R; Kerl H

1999-03-01

206

Los tratados internacionales como base de la diplomacia mundial.  

Directory of Open Access Journals (Sweden)

Full Text Available Se presenta un análisis sobre las generalidades de los tratados internacionales: regulación jurídica, clasificación, estructura e innovaciones contempladas en la Constitución de la República Bolivariana de Venezuela (CRBV). Las fuentes documentales utilizadas se en marcan dentro del ámbito constitucional, legal y doctrinal. Se concluye que los tratados internacionales constituyen en la era actual, sin lugar a dudas, la «base de la diplomacia mundial», puesto que ayudan a que una sociedad globalizada marcada por intereses contrapuestos en el ámbito económico, político, religioso, militar, cultural, entre otros, pueda convivir conforme a un orden internacional establecido. Además, estos acuerdos contribuyen a lograr el mantenimiento de la paz, el orden público y la re;olución de conflictos internacionales.

Larys Leiba Hernández Villalobos

2004-01-01

207

Características clínicas y resultados terapéuticos de linfomas no Hodgkin de células grandes B mediastinal primarios Clinical features and therapeutic results of primary mediastinal large B- cells non-Hodgkin's lymphomas  

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Full Text Available Se realizó un estudio observacional, descriptivo y retrospectivo para evaluar las características clinicobiológicas y los resultados terapéuticos del linfoma de células grandes B mediastinal primario, en 34 pacientes atendidos en el Hospital Clinicoquirúrgico "Hermanos Ameijeiras" desde junio de 1989 a febrero de 2009. Se halló predominio del sexo femenino (61,8 %), edad promedio de 31,5 años (19 a 61 años) y de la raza blanca (70,6 %). Fueron más frecuentes los estadios localizados (67,7 %), sin síntomas B (64,7 %) y con gran masa tumoral (70,6 %). La supervivencia global y la supervivencia libre de progresión a los 5 años fueron 53,4 y 43,4 %, respectivamente. La supervivencia global a los 3 años de los pacientes tratados con MACOPB/VACOPB, CHOP y R-CHOP fue de 77,7; 30,4 y 100 %, respectivamente. Se comprobó que los pacientes tratados con MACOPB/VACOPB tuvieron mejores resultados que los tratados con CHOP. El índice pronóstico internacional ajustado a la edad no fue predictor de supervivencia. En el análisis multivariable, el único predictor de supervivencia fue el tratamiento utilizado (CHOP contra MACOPB). El uso rutinario de la radioterapia no tuvo impacto significativo en la supervivencia global ni en la supervivencia libre de progresión a los 5 años.A retrospective, descriptive and observational study was conducted to assess the clinical-biological features and the therapeutic results of the primary mediastinal of large B cells lymphoma in 34 patients seen in the "Hermanos Ameijeiras" Clinical Surgical Hospital from June, 1989 to February, 2009. There was predominance of female sex (61.8 %), mean age of 31.5 years (19 to 61 years) and of white race (70.6 %). The localized stages were more frequent (67.7 %), without B symptoms (64.7 %) and with a large tumor mass (70.6 %). Global survival and the free of progression survival at five years were of 53.4 and 43.4 %, respectively. The global survival at three years of the patients treated with MACOPB/VACOPB, CHOP and R-CHOP was of 77.7; 30.4 and 100 %, respectively. It was proved that patients treated with MACOPB/VACOPB had better results than those treated with CHOP. Age-adjusted international prognostic rate was not a survival predictor. In multivariable analysis, the only survival predictor was the applied (CHOP versus MACOPB). The routine use of radiotherapy has neither a significant impact on the global survival nor on the free of progression survival at five years.

Reysel Chávez Medina; José Carnot Uria; Raúl de Castro Arenas; Jorge Muñío Perurena; Guillermo Pérez Román; Aramís Núñez Quintana

2011-01-01

208

Características clínicas y resultados terapéuticos de linfomas no Hodgkin de células grandes B mediastinal primarios/ Clinical features and therapeutic results of primary mediastinal large B- cells non-Hodgkin's lymphomas  

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Full Text Available Abstract in spanish Se realizó un estudio observacional, descriptivo y retrospectivo para evaluar las características clinicobiológicas y los resultados terapéuticos del linfoma de células grandes B mediastinal primario, en 34 pacientes atendidos en el Hospital Clinicoquirúrgico "Hermanos Ameijeiras" desde junio de 1989 a febrero de 2009. Se halló predominio del sexo femenino (61,8 %), edad promedio de 31,5 años (19 a 61 años) y de la raza blanca (70,6 %). Fueron más frecuentes los (more) estadios localizados (67,7 %), sin síntomas B (64,7 %) y con gran masa tumoral (70,6 %). La supervivencia global y la supervivencia libre de progresión a los 5 años fueron 53,4 y 43,4 %, respectivamente. La supervivencia global a los 3 años de los pacientes tratados con MACOPB/VACOPB, CHOP y R-CHOP fue de 77,7; 30,4 y 100 %, respectivamente. Se comprobó que los pacientes tratados con MACOPB/VACOPB tuvieron mejores resultados que los tratados con CHOP. El índice pronóstico internacional ajustado a la edad no fue predictor de supervivencia. En el análisis multivariable, el único predictor de supervivencia fue el tratamiento utilizado (CHOP contra MACOPB). El uso rutinario de la radioterapia no tuvo impacto significativo en la supervivencia global ni en la supervivencia libre de progresión a los 5 años. Abstract in english A retrospective, descriptive and observational study was conducted to assess the clinical-biological features and the therapeutic results of the primary mediastinal of large B cells lymphoma in 34 patients seen in the "Hermanos Ameijeiras" Clinical Surgical Hospital from June, 1989 to February, 2009. There was predominance of female sex (61.8 %), mean age of 31.5 years (19 to 61 years) and of white race (70.6 %). The localized stages were more frequent (67.7 %), without B (more) symptoms (64.7 %) and with a large tumor mass (70.6 %). Global survival and the free of progression survival at five years were of 53.4 and 43.4 %, respectively. The global survival at three years of the patients treated with MACOPB/VACOPB, CHOP and R-CHOP was of 77.7; 30.4 and 100 %, respectively. It was proved that patients treated with MACOPB/VACOPB had better results than those treated with CHOP. Age-adjusted international prognostic rate was not a survival predictor. In multivariable analysis, the only survival predictor was the applied (CHOP versus MACOPB). The routine use of radiotherapy has neither a significant impact on the global survival nor on the free of progression survival at five years.

Chávez Medina, Reysel; Carnot Uria, José; de Castro Arenas, Raúl; Muñío Perurena, Jorge; Pérez Román, Guillermo; Núñez Quintana, Aramís

2011-06-01

209

Linfoma primario cutáneo difuso de células B grandes, tipo pierna (LPCDCBG-TP), localizado en cuero cabelludo/ Diffuse primary large B-Cell cutaneous lymphoma  

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Full Text Available Abstract in spanish Los linfomas primarios cutáneos de células B se consideran actualmente como categoría distintiva de los linfomas primarios cutáneos y se reconocen subtipos característicos dentro de ellos. Se presenta un caso de linfoma primario cutáneo difuso de células B grandes, tipo pierna, con localización en el cuero cabelludo, donde se pudo disponer de estudios inmunohistoquímicos para su tipificación, que mostraron positividad para los marcadores CD20, bcl-2 y MUM-1, y n (more) egatividad para CD3 y bcl-6. Estos resultados, unidos a las características de las lesiones y el estudio histológico condujeron al diagnóstico final. Abstract in english Los linfomas primarios cutáneos de células B se consideran actualmente como categoría distintiva de los linfomas primarios cutáneos y se reconocen subtipos característicos dentro de ellos. Se presenta un caso de linfoma primario cutáneo difuso de células B grandes, tipo pierna, con localización en el cuero cabelludo, donde se pudo disponer de estudios inmunohistoquímicos para su tipificación, que mostraron positividad para los marcadores CD20, bcl-2 y MUM-1, y n (more) egatividad para CD3 y bcl-6. Estos resultados, unidos a las características de las lesiones y el estudio histológico condujeron al diagnóstico final.

Felipe Fereira, Oristel I; Leonardo, Eugenio; Hernández Vázquez, Juan

2010-06-01

210

Linfoma Extranodal de Células NK/T tipo Nasal/ Extranodal Nasal type NK/T-Cell Lymphoma  

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Full Text Available Abstract in portuguese O Linfoma Extranodal de Células NK/T tipo Nasal tem uma distribuição geográfica peculiar, ocorrendo mais frequentemente em países orientais e na população nativa de alguns países da América Central e da América do Sul. Sua localização preferencial é na cavidade nasal e nos seios paranasais, mas pode acometer outras estruturas da chamada região médio-facial. Tem um padrão de disseminação com "homing" característico, incluindo pele, testículo, SNC e trat (more) o digestivo. Este linfoma, menos frequentemente, pode acometer primariamente estas regiões. A maioria destas neoplasias apresenta um fenótipo NK, mas alguns poucos casos podem ter sua origem em células T verdadeiras, por este motivo é designado "linfoma NK/T". O genoma do vírus Epstein-Barr é detectado na maioria dos casos, sugerindo uma relação etiológica. Embora este linfoma seja sensível à radioterapia, apresenta mais frequentemente resistência a agentes quimioterápicos que outros linfomas. Uma possível explicação para a resistência é a usual expressão de glicoproteína-p. O prognóstico destes linfomas é pobre, sendo necessária a investigação de novas modalidades terapêuticas. Abstract in english Extranodal Nasal type NK/T-Cell Lymphoma has a peculiar geographic distribution, occurring more frequently in Eastern countries and in the native populations of some Central and South American countries. It is commonly found in the nasal cavity and paranasal sinuses, but may also compromise other structures in the mid-facial region. The disease has a characteristic homing dissemination pattern, including skin, testis, CNS and digestive tract. This lymphoma can, less frequ (more) ently, primarily compromise these regions. The majority of these neoplastic diseases present an NK phenotype, but a few cases can be truly of T-cell origin, because of which it is designed "NK/T-cell lymphoma". The Epstein-Barr virus genome can be detected in most of the cases, suggesting an etiological relationship. Although this lymphoma is responsive to radiotherapy, it is more resistant to conventional chemotherapy than other lymphomas. A possible explanation for this is the frequent expression of the p-glycoprotein. The prognosis of these lymphomas is still poor, making further investigation of new therapies imperativ.

Chiattone, Carlos S.

2009-08-01

211

Linfoma Extranodal de Células NK/T tipo Nasal Extranodal Nasal type NK/T-Cell Lymphoma  

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Full Text Available O Linfoma Extranodal de Células NK/T tipo Nasal tem uma distribuição geográfica peculiar, ocorrendo mais frequentemente em países orientais e na população nativa de alguns países da América Central e da América do Sul. Sua localização preferencial é na cavidade nasal e nos seios paranasais, mas pode acometer outras estruturas da chamada região médio-facial. Tem um padrão de disseminação com "homing" característico, incluindo pele, testículo, SNC e trato digestivo. Este linfoma, menos frequentemente, pode acometer primariamente estas regiões. A maioria destas neoplasias apresenta um fenótipo NK, mas alguns poucos casos podem ter sua origem em células T verdadeiras, por este motivo é designado "linfoma NK/T". O genoma do vírus Epstein-Barr é detectado na maioria dos casos, sugerindo uma relação etiológica. Embora este linfoma seja sensível à radioterapia, apresenta mais frequentemente resistência a agentes quimioterápicos que outros linfomas. Uma possível explicação para a resistência é a usual expressão de glicoproteína-p. O prognóstico destes linfomas é pobre, sendo necessária a investigação de novas modalidades terapêuticas.Extranodal Nasal type NK/T-Cell Lymphoma has a peculiar geographic distribution, occurring more frequently in Eastern countries and in the native populations of some Central and South American countries. It is commonly found in the nasal cavity and paranasal sinuses, but may also compromise other structures in the mid-facial region. The disease has a characteristic homing dissemination pattern, including skin, testis, CNS and digestive tract. This lymphoma can, less frequently, primarily compromise these regions. The majority of these neoplastic diseases present an NK phenotype, but a few cases can be truly of T-cell origin, because of which it is designed "NK/T-cell lymphoma". The Epstein-Barr virus genome can be detected in most of the cases, suggesting an etiological relationship. Although this lymphoma is responsive to radiotherapy, it is more resistant to conventional chemotherapy than other lymphomas. A possible explanation for this is the frequent expression of the p-glycoprotein. The prognosis of these lymphomas is still poor, making further investigation of new therapies imperativ.

Carlos S. Chiattone

2009-01-01

212

Linfoma não-Hodgkin envolvendo tonsila palatina: relato de 3 casos  

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Full Text Available O objetivo deste trabalho consiste em relatar três casos de linfoma não-Hodgkin (LNH) com acometimento de tonsilas palatinas acompanhados no Hospital Universitário Clementino Fraga Filho (HUCFF) da Universidade Federal do Rio de Janeiro (UFRJ), com pequena revisão de literatura. Os LNH acometem sítios extra-nodais em 25-30% dos casos. Dos casos extra-nodais, 10-30% acometem cabeça e pescoço. Destes casos de LNH em cabeça e pescoço, 60-70% estão presentes no anel de Waldeyer, e deste grupo, algumas séries relatam que 80% encontram-se na tonsila palatina. Concluímos, portanto, que o acometimento das tonsilas pelo LNH constitui uma apresentação incomum desta malignidade hematológica, que merece atenção e destaque para que seja feito diagnóstico precoce, seguido de tratamento e acompanhamento corretos.

Pinto Patrícia Ciminelli Linhares; Faria Cecília Pache de; Gomes Geraldo Augusto; Pinto Augusto Paulo

2004-01-01

213

Linfoma T primario colónico: Reporte de un caso y revisión de la literatura  

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Full Text Available Los linfomas del tracto gastrointestinal son el tipo más frecuente de linfomas extraganglionares y de estos el 15 % a 20 % son de localización intestinal. Los linfomas colónicos primarios son extremadamente raros, comprenden 0,2 % a 0,6 % de todas las neoplasias malignas de colon. Pueden ser B o T. Los tipo T son menos comunes y pueden estar o no asociados a enteropatía celiaca, enfermedad de Crohn y/o SIDA, siendo más frecuente en hombres adultos en una proporción de 2:1. Son de evolución lenta, clínicamente debutan con dolor abdominal asociado a cuadros obstructivos, seguidos de diarrea, hemorragia, perforación, o masa abdominal. El tratamiento es controvertido, en vista de que solamente el 30 % de los pacientes que van a cirugía tienen la firme presunción de linfoma. Presentamos el caso de un paciente masculino de 62 años, quien consultó por dolor abdominal en hipocondrio izquierdo de 30 días de evolución asociado a anorexia, náuseas, vómitos y melena. Los estudios de extensión gastrointestinales reportaron dentro de lo normal, en la tomografía axial computarizada abdominal se evidenció tumoración en hipocondrio izquierdo que comprimía extrínsecamente al colon descendente; siendo intervenido quirúrgicamente hallándose una gran adherencia entre epiplón mayor, peritoneo, mesocolon, ángulo esplénico, yeyuno y mesenterio, en el cual, se evidenció tumoración de 15 cm de diámetro. Se realizó una colectomía parcial y resección intestinal más anastomosis T-T, con buena evolución posoperatoria.Lymphomas of the gastrointestinal tract are the most frequent type of primary extranodal lymphomas and of these, the 15 % to 20 % are of intestinal location. The primary colonic lymphomas is extremely rare, they include 0.2 % to 0.6 % of all the colonic malignant neoplasm. They can be B or T. Intestinal T-cell lymphomas are much less common and can be or no associate to enteropathy celiac, Crohn’s disease and/or AIDS. They are more frequent in adult men in a proportion of 2:1. They are of slow evolution, clinically they make debut with abdominal pain associate to obstructive squares, followed by diarrhea, hemorrhages, perforation or abdominal mass. The treatment is controverted, in view of which only 30 % of the patients who go to surgery have the firm presumption of lymphoma. We present the case of a 62 year-old male patient who consulted by abdominal pain in left hypochondriac of 30 days of evolution associated to anorexia, sick feeling, vomits and manes. The gastrointestinal extension studies reported normal; the Computerized Axial Tomography showed a tumor in left hypochondriac that compressed extrinsically the descending colon. The patient was under surgery finding in a great adherence among great omentun, peritoneum, mesocolon, splenic flexure, jejunum and mesentery surgically, a 15 cm diameter tumor in jejune and great omentun. We realized a partial colectomy and small intestine resection with a T-T anastomosis with a well post-operative evolution.

Gabriela González Paredes; Estrella C Uzcátegui Paz; Carlos E Quintero R

2006-01-01

214

Granuloma anular asociado a linfoma no Hodgkim difuso de células B grandes  

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Full Text Available Se presenta el caso de un paciente de 55 años con antecedentes de ser hipertenso controlado, atendido en servicio de hematología por adenopatías de características linfomatosas distribuidas en cadenas ganglionares, axilares, inguinales y epitrocleares distribuidas de forma bilateral. Los exámenes permitieron arribar al diagnóstico de un linfoma no Hogdkin difuso de células B grandes y de un granuloma anular.Granuloma Annulare Associated with non Hodgkin Diffuse Large B-cell LymphomaThe case of a male, 55 years old patient, with a history of controlled hypertension is presented. The patient was treated in the hematology service for adenopathies of lymphomatous type distributed in nodal chains: axillary, inguinal and epitrochlear and bilaterally distributed. Tests allowed to conclude a final diagnose of non Hodgkin diffuse large B-cell lymphoma and a granuloma annulare.  

Rafael Alejandro Gómez Baute; Liermis M. Dita Salabert

2011-01-01

215

Manifestaciones autoinmunes en el linfoma no hodgkiniano Autoimmune manifestations in non-Hodgkin's lymphoma  

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Full Text Available Diversos estudios en pacientes con linfomas no hodgkinianos han demostrado niveles elevados de autoanticuerpos con una amplia gama de especificidades y se ha establecido la importancia de su detección para el diagnóstico, el pronóstico de la enfermedad, así como en el monitoreo de la respuesta a la terapia antineoplásica. La revisión de los resultados de un grupo de investigaciones muestra el papel de esos autoanticuerpos en la fisiopatogenia de esta enfermedadSeveral studies conducted among patients with non-Hodgkin's lymphomas have proved the existence of elevated levels of antibodies with a wide range of specificities. The importance of their detection for the diagnosis, the prognosis of the disease, and the monitoring of the response to the antineoplastic therapy has been established. The review of the results of a group of researches shows the role played by these antibodies in the physiopathogeny of this disease

Ana María Guerreiro Hernández; Rinaldo Villaescusa Blanco; Luz Mireya Morera Barrios; Luis Gabriel Ramón Rodríguez

2006-01-01

216

Avaliação neurológica de pacientes adultos com linfoma não-Hodgkin: estudo prospectivo  

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Full Text Available Estudo prospectivo incluindo 67 pacientes adultos com linfoma não-Hodgkin, considerados segundo o "Working Formulation". A população foi estudada como um todo, quer apresentasse ou não anticorpos anti-HIV no soro. Todos os pacientes foram submetidos a avaliação neurológica e o exame do líquido cefalorraqueano (LCR) foi realizado em 63 deles. Os achados neurológicos e do exame do LCR foram correlacionados. Mostraram-se significativas as associações: dor tóraco-lombar localizada e alterações do LCR (presença de células neoplásicas, aumento da concentração proteica e/ou aumento do teor de globulinas gama); anormalidade da força muscular nos membros inferiores e alterações do LCR nos pacientes HIV soro-negativos. Houve correlação entre o aparecimento de sinais de comprometimento dos nervos cranianos III, IV e VI e a detecção de células neoplásicas no LCR.

MIELLI SYLVIA REGINA; LIVRAMENTO JOSÉ ANTONIO

1998-01-01

217

Linfoma T primario colónico: Reporte de un caso y revisión de la literatura  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Los linfomas del tracto gastrointestinal son el tipo más frecuente de linfomas extraganglionares y de estos el 15 % a 20 % son de localización intestinal. Los linfomas colónicos primarios son extremadamente raros, comprenden 0,2 % a 0,6 % de todas las neoplasias malignas de colon. Pueden ser B o T. Los tipo T son menos comunes y pueden estar o no asociados a enteropatía celiaca, enfermedad de Crohn y/o SIDA, siendo más frecuente en hombres adultos en una proporción (more) de 2:1. Son de evolución lenta, clínicamente debutan con dolor abdominal asociado a cuadros obstructivos, seguidos de diarrea, hemorragia, perforación, o masa abdominal. El tratamiento es controvertido, en vista de que solamente el 30 % de los pacientes que van a cirugía tienen la firme presunción de linfoma. Presentamos el caso de un paciente masculino de 62 años, quien consultó por dolor abdominal en hipocondrio izquierdo de 30 días de evolución asociado a anorexia, náuseas, vómitos y melena. Los estudios de extensión gastrointestinales reportaron dentro de lo normal, en la tomografía axial computarizada abdominal se evidenció tumoración en hipocondrio izquierdo que comprimía extrínsecamente al colon descendente; siendo intervenido quirúrgicamente hallándose una gran adherencia entre epiplón mayor, peritoneo, mesocolon, ángulo esplénico, yeyuno y mesenterio, en el cual, se evidenció tumoración de 15 cm de diámetro. Se realizó una colectomía parcial y resección intestinal más anastomosis T-T, con buena evolución posoperatoria. Abstract in english Lymphomas of the gastrointestinal tract are the most frequent type of primary extranodal lymphomas and of these, the 15 % to 20 % are of intestinal location. The primary colonic lymphomas is extremely rare, they include 0.2 % to 0.6 % of all the colonic malignant neoplasm. They can be B or T. Intestinal T-cell lymphomas are much less common and can be or no associate to enteropathy celiac, Crohn?s disease and/or AIDS. They are more frequent in adult men in a proportion o (more) f 2:1. They are of slow evolution, clinically they make debut with abdominal pain associate to obstructive squares, followed by diarrhea, hemorrhages, perforation or abdominal mass. The treatment is controverted, in view of which only 30 % of the patients who go to surgery have the firm presumption of lymphoma. We present the case of a 62 year-old male patient who consulted by abdominal pain in left hypochondriac of 30 days of evolution associated to anorexia, sick feeling, vomits and manes. The gastrointestinal extension studies reported normal; the Computerized Axial Tomography showed a tumor in left hypochondriac that compressed extrinsically the descending colon. The patient was under surgery finding in a great adherence among great omentun, peritoneum, mesocolon, splenic flexure, jejunum and mesentery surgically, a 15 cm diameter tumor in jejune and great omentun. We realized a partial colectomy and small intestine resection with a T-T anastomosis with a well post-operative evolution.

González Paredes, Gabriela; Uzcátegui Paz, Estrella C; Quintero R, Carlos E

2006-12-01

218

Manifestaciones autoinmunes en el linfoma no hodgkiniano/ Autoimmune manifestations in non-Hodgkin's lymphoma  

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Full Text Available Abstract in spanish Diversos estudios en pacientes con linfomas no hodgkinianos han demostrado niveles elevados de autoanticuerpos con una amplia gama de especificidades y se ha establecido la importancia de su detección para el diagnóstico, el pronóstico de la enfermedad, así como en el monitoreo de la respuesta a la terapia antineoplásica. La revisión de los resultados de un grupo de investigaciones muestra el papel de esos autoanticuerpos en la fisiopatogenia de esta enfermedad Abstract in english Several studies conducted among patients with non-Hodgkin's lymphomas have proved the existence of elevated levels of antibodies with a wide range of specificities. The importance of their detection for the diagnosis, the prognosis of the disease, and the monitoring of the response to the antineoplastic therapy has been established. The review of the results of a group of researches shows the role played by these antibodies in the physiopathogeny of this disease

Guerreiro Hernández, Ana María; Villaescusa Blanco, Rinaldo; Morera Barrios, Luz Mireya; Ramón Rodríguez, Luis Gabriel

2006-04-01

219

Search of intravascular hemolysis in patients with the cutaneous form of loxoscelism/ Pesquisa de hemólise intravascular na forma cutânea de loxoscelismo  

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Full Text Available Abstract in portuguese Dezenove pacientes que apresentaram a forma clínica cutânea do loxoscelismo foram investigados com o propósito de pesquisar hemólise intravascular sub-clínica, lançando mão da dosagem de haptoglobina, um método altamente sensível que permite detectar discreta presença de hemólise intravascular. Não foi encontrada diminuição de haptoglobina, o que descarta uma ação hemolítica do veneno da Loxosceles nestes pacientes. Abstract in english Haptoglobin assay, a highly sensitive method to detect intravascular hemolysis was carried out in the sera of 19 patients referred to Hospital Vital Brazil with the cutaneous form of loxoscelism in order to investigate the occurrence of mild intravascular hemolysis. Data from this series did not show decreased levels haptoglobin, ruling out intravascular hemolysis in these patients with cutaneous form of loxoscelism.

Morena, Pasquale; Nonoyama, Kimiyo; Cardoso, João Luiz C.; Barreto, Orlando C. de O.

1994-04-01

220

Contribuição da medicina nuclear para a avaliação dos linfomas Contribution of nuclear medicine in lymphomas approach  

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Full Text Available A medicina nuclear permite a caracterização funcional de tecidos, acrescentando dados à avaliação anatômica realizada por outros métodos de imagem, como a tomografia computadorizada, ressonância magnética ou ultra-som. Além do diagnóstico e estadiamento, as informações funcionais fornecidas pela medicina nuclear são particularmente úteis no seguimento e avaliação de resposta terapêutica dos pacientes com linfoma. A presença de massa residual após quimioterapia ou a infiltração de linfonodos de pequenas dimensões são exemplos de situações nas quais a avaliação isolada de características anatômicas é insuficiente. Os principais métodos utilizados são a cintilografia com gálio-67, traçador com alta afinidade por transferrina e receptores de ferro, e os estudos com flúor-deoxiglicose, emissor de pósitron que permite a caracterização do metabolismo de glicose nos tecidos. Outros traçadores, como o tálio-201, sestamibi-Tc99m e octreotide-In111, também são utilizados em menor escala na avaliação dos pacientes com linfoma. Os mecanismos de captação, principais indicações dos estudos, limitações e resultados de literatura serão revistos.Nuclear medicine procedures allow functional characterization of organs and tissues, that can be compared to the anatomical evaluation provided by computed tomography, magnetic resonance imaging and ultrasonography. Functional information are usefull not only in diagnosis and staging, but mainly in the follow-up and evaluation of the therapeutic response of lymphoma patients. Persistent or residual mediastinal mass and and infiltration of small nodes are some examples of situations in which purely anatomical evaluation is insufficient. The main methods in use are scintigraphy with galium-67, a transferrin avid tracer, and PET with fluoro-desoxyglucose, indicated for the metabolic evaluation of tissues. Other tracers are also described, as thallium-201, 99mTc-sestamibi, and 111In-octreotide. Mechanisms of uptake, indications, limitations and results of the literature are and discussed in this review.

Marcelo T. Sapienza; Marília M. S. Marone; Carlos S. Chiattone

2001-01-01

 
 
 
 
221

Actinomicosis vs Linfoma: presentación de un caso/ Actinomycosis vs. lymphoma: a case presentation  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Fundamento: el linfoma es la proliferación monoclonal neoplásica de células linfoides en localizaciones del sistema inmunitario, que incluyen ganglios linfáticos, médula ósea, bazo, hígado y tracto gastrointestinal. Caso Clínico: se presentó el caso de Linfoma no Hodgkin linfoblástico de alto grado de malignidad, en una paciente de 36 años de edad con antecedentes de hepatitis viral, giardiasis y aborto provocado con implantación de dispositivo intrauterino, q (more) ue ingresa en el servicio de terapia intensiva del Hospital Universitario Manuel Ascunce Domenech por ausencia de apetito, decaimiento y pérdida de peso de 30 libras aproximadamente en tres meses; en la exploración física inicial se encuentran grandes edemas blandos en miembros inferiores y caquexia, además de distensión abdominal. Después de una estadía prolongada y tórpida evolución, la paciente fallece. Abstract in english Background: lymphoma is the proliferation of neoplastic monoclonal of lymphoid cells in locations of the immune system, including lymph nodes, bone marrow, spleen, liver and gastrointestinal tract. Clinical case: is presented a case of a lymphoblastic non-Hodgkin´s lymphoma´s of high-grade of malignancy in a 36-year-old patient with a history of viral hepatitis, giardiasis and abortion caused by implantation of intra-uterine device, admitted in the intensive care unit s (more) ervice at Manuel Ascunce Domenech University Hospital by lack of appetite, dwindles, weight loss of 30 pounds approximately in three months, and in the initial physical examination are found large soft edema in lower limbs and cachexia and abdominal distention. After a long stay and torpid evolution, the patient died.

Basulto Barroso, Manuel M; Fuentes Díaz, Zaily; Galdós Sánchez, María del Carmen; Pérez Sarmiento, Raúl A; Rabasa Pérez, René

2011-12-01

222

Pulmonary microvascular cytology can detect tumor cells of intravascular lymphoma.  

Science.gov (United States)

A 68-year-old man was admitted to our hospital for indistinct consciousness, progressive dyspnea, night sweats and fever of 2 weeks duration. Hypoxemia, thrombocytopenia, and elevated serum lactate dehydrogenase were found. Computed tomography was negative except for a small bilateral pleural effusion. Chest perfusion scintigraphy showed inhomogeneous perfusion thought unlikely to be pulmonary artery thromboembolism. Intravascular large B-cell lymphoma was suspected, and a pulmonary microvascular cytology specimen was obtained that contained numerous large lymphoma cells. Because the patient's condition was rapidly deteriorating, we started chemotherapy on the basis of the pulmonary microvascular cytology findings, and he improved. Later, atypical lymphocytes similar to those in the pulmonary microvascular cytology specimen were found in a bone marrow specimen. He was diagnosed as having diffuse large B-cell lymphoma. Because lymphoma cells were found in the pulmonary microvasculature, intravascular lymphoma was also diagnosed. Pulmonary microvascular cytology was helpful to detect lymphoma cells in the pulmonary microvasculature. PMID:19687591

Ishiguro, Takashi; Takayanagi, Noboru; Yanagisawa, Tsutomu; Kagiyama, Naho; Saito, Hiroo; Sugita, Yutaka; Kojima, Masaru

2009-08-17

223

Pulmonary microvascular cytology can detect tumor cells of intravascular lymphoma.  

UK PubMed Central (United Kingdom)

A 68-year-old man was admitted to our hospital for indistinct consciousness, progressive dyspnea, night sweats and fever of 2 weeks duration. Hypoxemia, thrombocytopenia, and elevated serum lactate dehydrogenase were found. Computed tomography was negative except for a small bilateral pleural effusion. Chest perfusion scintigraphy showed inhomogeneous perfusion thought unlikely to be pulmonary artery thromboembolism. Intravascular large B-cell lymphoma was suspected, and a pulmonary microvascular cytology specimen was obtained that contained numerous large lymphoma cells. Because the patient's condition was rapidly deteriorating, we started chemotherapy on the basis of the pulmonary microvascular cytology findings, and he improved. Later, atypical lymphocytes similar to those in the pulmonary microvascular cytology specimen were found in a bone marrow specimen. He was diagnosed as having diffuse large B-cell lymphoma. Because lymphoma cells were found in the pulmonary microvasculature, intravascular lymphoma was also diagnosed. Pulmonary microvascular cytology was helpful to detect lymphoma cells in the pulmonary microvasculature.

Ishiguro T; Takayanagi N; Yanagisawa T; Kagiyama N; Saito H; Sugita Y; Kojima M

2009-01-01

224

Model of distribution of dose for intravascular brachytherapy  

International Nuclear Information System (INIS)

In this work we present the radiation dose distributions for a theoretical model with Monte Carlo simulation, which was based on an experimental model developed for the study of the prevention of restenosis post-angioplasty employing intravascular brachytherapy. In the experimental model, the atherosclerotic plaques were induced in femoral arteries of male New Zealand rabbits through surgical intervention and later administration of cholesterol enriched diet. For the intravascular irradiation we employed a 32 P source contained within the balloon used for the angioplasty. The radiation dose distributions were calculated using the Monte Carlo code MCNP4B according to a segment of a simulated artery. We studied the radiation dose distribution in the axial and radial directions for different thickness of the atherosclerotic plaques. The results will be correlated with the biologic effects observed by means of histological analysis of the irradiated arteries. (author)

2001-05-04

225

Silent intravascular lymphoma initially manifesting as a unilateral adrenal incidentaloma.  

UK PubMed Central (United Kingdom)

Intravascular large B-cell lymphoma (IVLBCL) is a rare subtype of malignant lymphoma. Although the involvement of adrenal glands in IVLBCL is often observed, primary adrenal IVLBCL is rare. Most reported cases of adrenal IVLBCL showed bilateral lesions resulting in rapidly progressive adrenal failure and poor prognosis. Here, we report a case of slowly progressive primary adrenal IVLBCL manifesting initially with unilateral adrenal incidentaloma. This case is a silent IVLBCL and shows that the enlargement of both adrenal glands can be followed.

Takahashi Y; Iida K; Hino Y; Ohara T; Kurahashi T; Tashiro T; Chihara K

2012-01-01

226

Linfoma Linfocítico, bien diferenciado de la próstata: Presentación de un caso y breve revisión de la literatura/ Well-differentiated lymphocytic lymphoma of the prostate: Case report and bibliographic review  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Objetivo: Presentar un caso portador de un linfoma de próstata, en un paciente de 70 años de edad y hacer una breve revisión de la literatura. Método/resultados: Se trata de un paciente varón de 70 años de edad, que es visto en consulta de Urología por presentar un cuadro de prostatismo, llegando a la retención aguda de orina (RAO). Es intervenido quirúrgicamente realizándosele una prostatectomía retropúbica, obteniéndose como resultado anatomopatológico un (more) linfoma primario de próstata, el paciente fue remitido a Oncología, siendo tratado con radioterapia, llevando actualmente seguimiento en consulta de Urología. Se hace una breve revisión bibliográfica, donde analizamos las manifestaciones clínicas de esta entidad, las pruebas complementarias que nos ayudan a hacer el diagnóstico (exámenes de laboratorio, biopsia prostática transrectal, resección transuretral, ecografía, tomografía axial computarizada), los tratamientos que se aplican (cirugía, radioterapia, poliquimioterapia) así como la supervivencia de estos pacientes. Conclusiones: La edad promedio de diagnóstico en la casuística revisada por nosotros fue de 57 años. La forma clínica de debut son síntomas de prostatismo, pudiendo estar presente la RAO y en algunos casos manifestaciones de insuficiencia renal por uropatía obstructiva, así como manifestaciones generales (astenia, anorexia, pérdida de peso). Las cifras de antígeno específico prostático (PSA) no sufren alteraciones en los linfomas prostáticos. El diagnóstico histológico se puede realizar a través de la biopsia de próstata transrectal, aunque puede ser necesario la resección transuretral (RTU) de próstata para una mejor confirmación. La ultrasonografía y la tomografía axial computarizada (TAC) son de gran utilidad para el diagnóstico tanto local como de extensión de estos tumores. Desde el punto de vista del tratamiento puede ser necesario la cirugía desobstructiva (RTU, prostatectomía a cielo abierto), asociación con corticoides y otros citostáticos, la radioterapia y también se ha utilizado la quimioterapia intratecal, el transplante autólogo de médula ósea como complemento. Abstract in english Objective: To report a case of prostate lymphoma and a brief review of the literature. Methods/results: A 70 year-old mele patient was referred to the Urology departament with a clinical picture of prostatism, with acute urinary retention (AUR). Surgery with retropubic prostatectomy was performed, and pathology revealed a primary prostate lymphoma. The patient was referred to the departament of Oncology where he received polychemotherapy and radiotherapy. The patient is c (more) urrently followed by regular visits to Urology outpatients service.The case study is followed by a brief bibliographic review, where we analyse clinical menifestations of this entity, complementary studies useful for diagnosis (laboratory test, trasrectal prostate biopsy, transuretral resection, ultrasound and computerised axial tomography), treatment options (surgery, polychemotherapy, radiotherapy) as well as survival in these patients. Conclusions: Of the cases reviewed, mean age at diagnosis was 57 years. Clinical debut was with prostate symptoms, with or without AUR and sometimes manifestations of renal failure due to obstructive uropathy, as well as general symptoms (astenia, anorexia, weight loss). PSA values remain unaltered in prostate lymphoma patients. Histologic diagnosis may be made by transrectal prostate biopsy, although transurethral resection (TUR) may be necessary for con.rmation. Ultrasound and CT scan are of great utility for diagnosis of both local and distant tumors. From a therapeutic point of view, surgery for the obstruction of the lower urinary tract (TURP or retropubic prostatectomy) may be necessary, as well as the cyclophosphamide based polychemotherapy with corticosteroids and other cytostatic agents, and radiotherapy; intratecal chemotherapy has also been used adjuvant bone marrow transplantation.

Ochoa Undargarain, Otto; Hermida Pérez, José A.; Ochoa Montes de Oca, Johannes; Félix León, Juan M.

2006-06-01

227

Avaliação morfológica e imuno-histoquímica de linfomas gástricos primários Morphologic and immunohistochemical evaluation of primary gastric lymphomas  

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Full Text Available INTRODUÇÃO: Os linfomas gástricos primários representam cerca de 50% dos linfomas não-Hodgkin extranodais e de 2% a 8% das neoplasias malignas do estômago. A maioria é formada pela proliferação de linfócitos B, que ocorre a partir do tecido linfóide associado à mucosa. Esse tecido, inexistente no estômago em condições normais, surge como conseqüência de gastrite crônica, na maioria das vezes associada à bactéria Helicobacter pylori. A inflamação crônica provocada pela infecção bacteriana parece sensibilizar linfócitos T, levando a estímulo constante de linfócitos B, que passam a proliferar inicialmente em padrão reacional. Posteriormente surgem alterações genômicas nessas células, que provocam ganho proliferativo, seleção clonal e transformação neoplásica, dando origem a linfoma de baixo grau. Alterações genéticas adicionais, como mutações em p53, podem induzir transformação para alto grau. MATERIAL E MÉTODOS: Foram estudados 32 casos de linfomas gástricos: 15 de baixo e 17 de alto grau. Foram investigados sexo e idade dos pacientes, características morfológicas das lesões,índice de proliferação celular e colonização pelo Helicobacter pylori. Verificou-se a expressão de CD20, Ki-67, p53, BCL-2 e BCL-6 por imuno-histoquímica. RESULTADOS: Os linfomas gástricos ocorreram mais freqüentemente em homens, e a faixa etária mais elevada foi observada no grupo de baixo grau. Lesões linfoepiteliais foram observadas em 93% dos linfomas desse grupo. O índice de proliferação celular e a expressão do p53 foram mais elevados no grupo de alto grau. A expressão do BCL-2 foi mais elevada nos linfomas de baixo grau. Não houve diferença significante quanto à expressão do BCL-6 nos dois grupos. CONCLUSÃO: Os resultados sugerem a participação dos genes p53 e BCL-2 na patogênese e na evolução dos linfomas gástricos.INTRODUCTION: Primary gastric lymphomas account for 50% of the extranodal non-Hodgkin lymphoma and for 2% to 8% of the malignant gastric neoplasms. Most of them arise from B lymphocytes proliferation of the mucosaassociated lymphoid tissue. This tissue is not present in stomach in normal conditions; it arises secondarily to chronic gastritis, frequently associated to the bacterium Helicobacter pylori. Chronic inflammation of the bacterium infection seems to induce T lymphocytes, leading to persistent stimulation of B lymphocytes that initially proliferate in a reactive fashion. After that, there are some genomic changes in the lymphoid cells, including BCL-2 and BCL-6 mutation inducing some proliferating gain, clonal selection and neoplastic transformation, originating the lowgrade gastric lymphoma. Additional genetic changes, like p53 mutation, can induce high-grade transformation. MATERIAL AND METHODS: We revised 32 cases of gastric lymphomas: 15 low and 17 high-grade. The age and the gender of those patients were investigated. The morphological characteristics of the lesions and Helicobacter pylori colonization were assessed. Immunohistochemistry to CD20, Ki-67, p53, BCL-2 and BCL-6 was performed. RESULTS: Gastric lymphomas occur more frequently in males and patients' age is more advanced in the low grade group. Lymphoepithelial lesions were observed in 93% of this lymphoma group. The proliferative rate and p53 expression were greater in the high grade group. The BCL-2 expression was higher in the low grade lymphoma group. There were no significant differences in BCL-6 expression in both groups. CONCLUSION: The results suggest that genes P53 and BCL-2 play a role in the pathogenesis and evolution of gastric lymphomas.

Jorge Alberto Thomé; Agnes Cristina Fett-Conte; José Antonio Cordeiro

2005-01-01

228

Avaliação morfológica e imuno-histoquímica de linfomas gástricos primários/ Morphologic and immunohistochemical evaluation of primary gastric lymphomas  

Scientific Electronic Library Online (English)

Full Text Available Abstract in portuguese INTRODUÇÃO: Os linfomas gástricos primários representam cerca de 50% dos linfomas não-Hodgkin extranodais e de 2% a 8% das neoplasias malignas do estômago. A maioria é formada pela proliferação de linfócitos B, que ocorre a partir do tecido linfóide associado à mucosa. Esse tecido, inexistente no estômago em condições normais, surge como conseqüência de gastrite crônica, na maioria das vezes associada à bactéria Helicobacter pylori. A inflamação crô (more) nica provocada pela infecção bacteriana parece sensibilizar linfócitos T, levando a estímulo constante de linfócitos B, que passam a proliferar inicialmente em padrão reacional. Posteriormente surgem alterações genômicas nessas células, que provocam ganho proliferativo, seleção clonal e transformação neoplásica, dando origem a linfoma de baixo grau. Alterações genéticas adicionais, como mutações em p53, podem induzir transformação para alto grau. MATERIAL E MÉTODOS: Foram estudados 32 casos de linfomas gástricos: 15 de baixo e 17 de alto grau. Foram investigados sexo e idade dos pacientes, características morfológicas das lesões,índice de proliferação celular e colonização pelo Helicobacter pylori. Verificou-se a expressão de CD20, Ki-67, p53, BCL-2 e BCL-6 por imuno-histoquímica. RESULTADOS: Os linfomas gástricos ocorreram mais freqüentemente em homens, e a faixa etária mais elevada foi observada no grupo de baixo grau. Lesões linfoepiteliais foram observadas em 93% dos linfomas desse grupo. O índice de proliferação celular e a expressão do p53 foram mais elevados no grupo de alto grau. A expressão do BCL-2 foi mais elevada nos linfomas de baixo grau. Não houve diferença significante quanto à expressão do BCL-6 nos dois grupos. CONCLUSÃO: Os resultados sugerem a participação dos genes p53 e BCL-2 na patogênese e na evolução dos linfomas gástricos. Abstract in english INTRODUCTION: Primary gastric lymphomas account for 50% of the extranodal non-Hodgkin lymphoma and for 2% to 8% of the malignant gastric neoplasms. Most of them arise from B lymphocytes proliferation of the mucosaassociated lymphoid tissue. This tissue is not present in stomach in normal conditions; it arises secondarily to chronic gastritis, frequently associated to the bacterium Helicobacter pylori. Chronic inflammation of the bacterium infection seems to induce T lymph (more) ocytes, leading to persistent stimulation of B lymphocytes that initially proliferate in a reactive fashion. After that, there are some genomic changes in the lymphoid cells, including BCL-2 and BCL-6 mutation inducing some proliferating gain, clonal selection and neoplastic transformation, originating the lowgrade gastric lymphoma. Additional genetic changes, like p53 mutation, can induce high-grade transformation. MATERIAL AND METHODS: We revised 32 cases of gastric lymphomas: 15 low and 17 high-grade. The age and the gender of those patients were investigated. The morphological characteristics of the lesions and Helicobacter pylori colonization were assessed. Immunohistochemistry to CD20, Ki-67, p53, BCL-2 and BCL-6 was performed. RESULTS: Gastric lymphomas occur more frequently in males and patients' age is more advanced in the low grade group. Lymphoepithelial lesions were observed in 93% of this lymphoma group. The proliferative rate and p53 expression were greater in the high grade group. The BCL-2 expression was higher in the low grade lymphoma group. There were no significant differences in BCL-6 expression in both groups. CONCLUSION: The results suggest that genes P53 and BCL-2 play a role in the pathogenesis and evolution of gastric lymphomas.

Thomé, Jorge Alberto; Fett-Conte, Agnes Cristina; Cordeiro, José Antonio

2005-04-01

229

Intravascular foreign bodies: danger of unretrieved fragmented medical devices.  

UK PubMed Central (United Kingdom)

A warning on the danger of unretrieved device fragments and recommendations to mitigate the danger were issued by the Food and Drug Administration in January 2008. The causes of intravascular foreign bodies are classified into three main categories: improper manipulation and usage, device defects, and others, such as patient and anatomical factors. Device failure after long-term use is rarely predicted at the time of approval, since device abnormality is rarely experienced in animal studies and clinical trials conducted during development of the device. Stent fracture due to metal fatigue is one example. Complex complications could occur from simultaneous use of two or more devices with diverse characteristics. The success rate of percutaneous retrieval of intravascular foreign bodies has improved with the advances in commercially available devices. However, the procedure is not always successful and sometimes surgical removal becomes necessary. Appropriate device selection and acquisition of experience in using the device are important. When an intravascular foreign body cannot be retrieved, the risk of complication could be high. Magnetic resonance imaging examination sometimes causes adverse events, including burns due to the heat generated by metal movement. Such information should be correctly recorded. Furthermore, it is necessary to provide patients with adequate information about the characteristics of implanted devices and unretrieved fragments. We reviewed the literature on unretrieved medical device fragments and include articles that describe the Japanese experience.

Tateishi M; Tomizawa Y

2009-01-01

230

Intravascular foreign bodies: danger of unretrieved fragmented medical devices.  

Science.gov (United States)

A warning on the danger of unretrieved device fragments and recommendations to mitigate the danger were issued by the Food and Drug Administration in January 2008. The causes of intravascular foreign bodies are classified into three main categories: improper manipulation and usage, device defects, and others, such as patient and anatomical factors. Device failure after long-term use is rarely predicted at the time of approval, since device abnormality is rarely experienced in animal studies and clinical trials conducted during development of the device. Stent fracture due to metal fatigue is one example. Complex complications could occur from simultaneous use of two or more devices with diverse characteristics. The success rate of percutaneous retrieval of intravascular foreign bodies has improved with the advances in commercially available devices. However, the procedure is not always successful and sometimes surgical removal becomes necessary. Appropriate device selection and acquisition of experience in using the device are important. When an intravascular foreign body cannot be retrieved, the risk of complication could be high. Magnetic resonance imaging examination sometimes causes adverse events, including burns due to the heat generated by metal movement. Such information should be correctly recorded. Furthermore, it is necessary to provide patients with adequate information about the characteristics of implanted devices and unretrieved fragments. We reviewed the literature on unretrieved medical device fragments and include articles that describe the Japanese experience. PMID:19536624

Tateishi, Minori; Tomizawa, Yasuko

2009-06-18

231

Percutaneous intravascular stenting for subclavian arterial stenosis or occlusion  

International Nuclear Information System (INIS)

Objective: To evaluate the clinical effects of intravascular stenting for subclavian arterial stenosis or occlusion. Methods: Retrospective analysis of the clinical data for 10 patients with subclavian arterial stenosis or occlusion utilizing intravascular stents. Results: Eight subclavian arterial stenosis or occlusion lesions in 10 patients were placed stents successfully (stenosis > 70%). One of the 3 subclavian arterial occlusions was also successfully with stent placement but the other 2 were given up due to the failure of passing through the guidewire. Seven with stenting through femoral artery and 1 through retrograde brachial arterial approach, showed well brachial and radial arterial pulsations after the procedure, together with the vanishment of 'stealth' sign in 5 patients. During 2-24 months follow-up, 1 case occurred restenosis 9 months later, and was restented with uneventful repatency. The case with two stents placed at the same time in bilateral subclavian arteries died suffering from cerebral hemorrhage 2 months later after stenting. Conclusions: Intravascular stenting is safe, effective and mini-invasive in treating subclavian artery stenosis or occlusion, expecting to be the most crucial clinical therapy. (authors)

2008-01-01

232

Non Hodgkin T cell lymphoma: an atypical clinical presentation Linfoma não Hodgkin de células T citotóxico: uma apresentação clínica atípica  

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Full Text Available Cytotoxic lymphomas comprise a spectrum of peripheral T-cell lymphomas that can have a initial or late cutaneous presentation. We describe a 46-year-old man from Cape Verde, with a dermatosis involving his face and trunk, consisting of monomorphic papules with a smooth surface and both motor and sensory polyneuropathy.The hypothesis of leprosy was supported by the clinical and initial hystopathological findings and the patient was referred to our hospital with suspected Hansen's disease. In the new skin and lymph node biopsies a lymphocyte population was identified whose immunohystochemistry study allowed the diagnosis of T-cell lymphoma with expression of cytotoxic markers. The patient was started on chemotherapy with initial remission of the skin lesions but, subsequently, progression of systemic disease.Os linfomas citotóxicos compreendem um espectro de linfomas de células T periféricos e linfomas Natural Killer que podem ter expressão cutânea primária ou secundária. Descrevemos o caso de um homem com 46 anos de idade, natural de Cabo Verde,com dermatose envolvendo a face e tronco constituída por pápulas monomorfas superfície lisa e polineuropatia sensitivo motora.A hipótese de Hanseníase foi colocada suportada por achados histopatológicos sugestivos sendo o doente referenciado à consulta de Doença de Hansen do nosso hospital. Em biopsia de pele e de gânglio identificou-se proliferação linfocitária cujo estudo imunohistoquímico permitiu o diagnóstico de linfoma T com expressão de marcadores citotóxicos. Iniciou quimioterapia verificando-se inicialmente remissão parcial das lesões cutâneas mas posteriormente a progressão da doença sistémica.

Paula Maio; Diogo Bento; Raquel Vieira; Ana Afonso; Fernanda Sachse; Heinz Kutzner

2013-01-01

233

Primary liver AIDS-related lympoma Linfoma não-Hodgkin primário do fígado em paciente com SIDA  

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Full Text Available Non-Hodgkin's lymphomas (NHL) are the second most frequent malignancies in AIDS patients. The majority of NHL associated with AIDS involves extranodal sites, especially the digestive tract and the central nervous system. Primary liver lymphoma (PLL) is an uncommon neoplasm among these patients. Ultrasonography and computed tomography scans may be helpful in the diagnosis of focal hepatic lymphoma. Image-guided fine-needle biopsy with histopathology of the liver lesions is the gold standard for the diagnosis of hepatic lymphoma. We report a case of PLL as the initial manifestation of AIDS in a patient without any previous infection by hepatitis C or B virus, presented as multiple and large hepatic masses.Os linfomas não-Hodgkin (LNH) são as segundas neoplasias mais freqüentes nos pacientes com síndrome da imunodeficiência adquirida (SIDA). A maioria dos LNH associados à AIDS envolvem locais extra-ganglionares, especialmente o trato digestivo e o sistema nervoso central. O linfoma não-Hodgkin primário do fígado (LPF) é uma neoplasia incomum nestes pacientes. A ultrassonografia (US) e a tomografia computadorizada (TC) podem ser úteis no diagnóstico de linfoma não-Hodgkin hepático apresentando-se como lesões multifocais. A biópsia com agulha fina guiada por imagens (US, TC) juntamente com a histopatologia das lesões do fígado constitui o padrão-ouro para o diagnóstico de linfoma hepático. Este trabalho relata um caso de LPF como manifestação inicial de AIDS em um paciente sem infecção prévia pelo vírus da hepatite C e B, que se apresentou como massas hepáticas múltiplas e de grandes dimensões.

María Florencia Villafañe; Norberto Trione; Marcelo Corti; Nora Mendez; Elisa Gancedo; Norberto Zamora; Marta Levin

2006-01-01

234

Non Hodgkin T cell lymphoma: an atypical clinical presentation/ Linfoma não Hodgkin de células T citotóxico: uma apresentação clínica atípica  

Scientific Electronic Library Online (English)

Full Text Available Abstract in portuguese Os linfomas citotóxicos compreendem um espectro de linfomas de células T periféricos e linfomas Natural Killer que podem ter expressão cutânea primária ou secundária. Descrevemos o caso de um homem com 46 anos de idade, natural de Cabo Verde,com dermatose envolvendo a face e tronco constituída por pápulas monomorfas superfície lisa e polineuropatia sensitivo motora.A hipótese de Hanseníase foi colocada suportada (more) por achados histopatológicos sugestivos sendo o doente referenciado à consulta de Doença de Hansen do nosso hospital. Em biopsia de pele e de gânglio identificou-se proliferação linfocitária cujo estudo imunohistoquímico permitiu o diagnóstico de linfoma T com expressão de marcadores citotóxicos. Iniciou quimioterapia verificando-se inicialmente remissão parcial das lesões cutâneas mas posteriormente a progressão da doença sistémica. Abstract in english Cytotoxic lymphomas comprise a spectrum of peripheral T-cell lymphomas that can have a initial or late cutaneous presentation. We describe a 46-year-old man from Cape Verde, with a dermatosis involving his face and trunk, consisting of monomorphic papules with a smooth surface and both motor and sensory polyneuropathy.The hypothesis of leprosy was supported by the clinical and initial hystopathological findings and the patient was referred to our hospital with suspected H (more) ansen's disease. In the new skin and lymph node biopsies a lymphocyte population was identified whose immunohystochemistry study allowed the diagnosis of T-cell lymphoma with expression of cytotoxic markers. The patient was started on chemotherapy with initial remission of the skin lesions but, subsequently, progression of systemic disease.

Maio, Paula; Bento, Diogo; Vieira, Raquel; Afonso, Ana; Sachse, Fernanda; Kutzner, Heinz

2013-04-01

235

Linfoma de células fusiformes: relato anatomopatológico de um caso com apresentação pulmonar/ Spindle cell lymphoma: a case with pulmonary presentation  

Scientific Electronic Library Online (English)

Full Text Available Abstract in portuguese São raros os linfomas que se apresentam com padrão histológico de células fusiformes. Relatamos um caso de tumor pulmonar isolado em homem de 74 anos, diagnosticado em biópsia de agulha como neoplasia maligna de células fusiformes. Na ocasião, o estudo imuno-histoquímico favoreceu pseudotumor inflamatório. Sete meses após, o paciente foi laparotomizado devido a tumor perfurado intestinal. Os estudos anatomopatológico e imuno-histoquímico estabeleceram o diagn? (more) ?stico de linfoma B difuso de grandes células. A revisão do tumor pulmonar revelou positividade franca para CD45 e CD20, confirmando o diagnóstico de Linfoma B de células fusiformes. Esta publicação visa a alertar para essa incomum apresentação dos linfomas, que necessita ser considerada, no diagnóstico diferencial de neoplasias de células fusiformes. Abstract in english This paper reports a rare malignant lymphoma with histological spindle-cell pattern. Seventy four year-old man presented with lung tumor. A diagnostic of spindle-cell malignant neoplasia was made and immunohistochemical studies were suggestive of inflammatory pseudotumor. Three months later, the patient returned to our service with acute abdomen. The surgery showed small Intestinal perforation associated with tumor. Microscopic examination and immunohistochemical studies (more) revealed Diffuse B-large cell lymphoma. After the diagnostic of the intestinal tumor, the lung tumor was reviewed, showing positivity for CD45 and CD20 antibodies. This result supports the diagnostic of Spindle B-cell lymphoma, in the lung tumor. The aim of this report is to alert pathologists about this rare spindle cell pattern presentation of lymphomas, that must be differentiated from true sarcomas and others spindle-cell neoplasias.

Souza, Túlio Geraldo de Souza e; Leandro, Luciana de Oliveira; Silva, Maria Betânia Souza da; Alves, Venâncio Avancini Ferreira; Silva, Celso Rubens Vieira e

2006-02-01

236

Linfoma de células fusiformes: relato anatomopatológico de um caso com apresentação pulmonar Spindle cell lymphoma: a case with pulmonary presentation  

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Full Text Available São raros os linfomas que se apresentam com padrão histológico de células fusiformes. Relatamos um caso de tumor pulmonar isolado em homem de 74 anos, diagnosticado em biópsia de agulha como neoplasia maligna de células fusiformes. Na ocasião, o estudo imuno-histoquímico favoreceu pseudotumor inflamatório. Sete meses após, o paciente foi laparotomizado devido a tumor perfurado intestinal. Os estudos anatomopatológico e imuno-histoquímico estabeleceram o diagnóstico de linfoma B difuso de grandes células. A revisão do tumor pulmonar revelou positividade franca para CD45 e CD20, confirmando o diagnóstico de Linfoma B de células fusiformes. Esta publicação visa a alertar para essa incomum apresentação dos linfomas, que necessita ser considerada, no diagnóstico diferencial de neoplasias de células fusiformes.This paper reports a rare malignant lymphoma with histological spindle-cell pattern. Seventy four year-old man presented with lung tumor. A diagnostic of spindle-cell malignant neoplasia was made and immunohistochemical studies were suggestive of inflammatory pseudotumor. Three months later, the patient returned to our service with acute abdomen. The surgery showed small Intestinal perforation associated with tumor. Microscopic examination and immunohistochemical studies revealed Diffuse B-large cell lymphoma. After the diagnostic of the intestinal tumor, the lung tumor was reviewed, showing positivity for CD45 and CD20 antibodies. This result supports the diagnostic of Spindle B-cell lymphoma, in the lung tumor. The aim of this report is to alert pathologists about this rare spindle cell pattern presentation of lymphomas, that must be differentiated from true sarcomas and others spindle-cell neoplasias.

Túlio Geraldo de Souza e Souza; Luciana de Oliveira Leandro; Maria Betânia Souza da Silva; Venâncio Avancini Ferreira Alves; Celso Rubens Vieira e Silva

2006-01-01

237

LINFOMA CUTÁNEO DE CÉLULAS B TIPO CENTRO FOLICULAR CON INFILTRACIÓN A MÉDULA ÓSEA: REPORTE DE UN CASO/ PRIMARY CUTANEOUS FOLLICLE CENTER LYMPHOMA WITH BONE MARROW INFILTRATION: RELATÓRIO DE UM CASO/ LINFOMA CUTÂNEO DE CÉLULAS B TIPO CENTRO FOLICULAR COM INFILTRAÇÃO NA MEDULA ÓSSEA  

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Full Text Available Abstract in portuguese Os linfomas cutâneos primários de células B constituem cerca de 20 a 25% de todos os linfomas. O linfoma cutâneo primário de células B tipo centro folicular é o subtipo mais frequente e manifestase principalmente em pacientes adultos com uma idade média de 58 anos (1), a disseminação extracutânea é muito rara e apresentase com nódulos, tumores ou placas solitárias no grupo usualmente localizados na cabeça ou tronco. Apresentamos o caso de uma paciente com um linfoma primário cutâneo tipo centro folicular com infiltração na medula óssea. Abstract in spanish Los linfomas cutáneos primarios de células B constituyen cerca del 2025% de todos los linfomas. El linfoma cutáneo primario de células B tipo centro folicular es el subtipo más frecuente y se manifiesta principalmente en pacientes adultos con una edad media de 58 años (1), la diseminación extracutánea es muy rara y se presenta con nódulos, tumores o placas solitarios o en grupo usualmente localizados en cabeza o tronco. Presentamos el caso de una paciente con un linfoma primario cutáneo tipo centro folicular con infiltración a médula ósea. Abstract in english Primary B cell cutaneous lymphomas represent approximately 2025% of all lymphomas. Primary cutaneous follicle center lymphoma is the most common subtype occurring in adults with a mean age of 58 years. The disease typically presents with solitary plaques or nodules and is usually located in the head or trunk. Extra cutaneous dissemination is extremely rare. We present a case of a patient with primary cutaneous follicle center lymphoma with bone marrow infiltration.

ARENAS SOTO, CLAUDIA MARCELA; MARIÑO ÁLVAREZ, MARÍA LILIANA; CALDERÓN GÓMEZ, JORGE ENRIQUE; GONZÁLEZ C, MARÍA ISABEL; ROBAYO, MARTHA PATRICIA

2012-06-01

238

Significado prognóstico dos graus histológicos do linfoma de Hodgkin do tipo esclerose nodular Prognostic significance of histopathological grading of nodular sclerosing Hodgkin’s lymphoma  

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Full Text Available INTRODUÇÃO: A esclerose nodular (EN), do tipo histológico freqüente do linfoma de Hodgkin (LH), apresenta grande variabilidade em sua composição celular. Na década de 80, pesquisadores do British National Lymphoma Investigation (BNLI) propuseram uma subclassificação histológica do LH EN. Eles identificaram dois graus histológicos - o LH EN grau I (LH EN I) e o LH EN grau II (LH EN II) - e demonstraram que os portadores de LH EN II apresentavam menor sobrevida em comparação aos portadores de LH EN I. Outros estudos, entretanto, não reproduziram esses achados. OBJETIVO: Avaliar o significado prognóstico da graduação histológica proposta pelo BNLI. MATERIAIS E MÉTODOS: Estudo retrospectivo que incluiu 69 casos de LH EN. Mais de 90% dos casos foram tratados com terapia combinada ou quimioterapia exclusiva, não havendo diferença no tipo de tratamento oferecido a depender do grau histológico. RESULTADOS: Trinta e cinco casos (51%) foram classificados com EN I e 34 (49%) como EN II. Não observamos diferenças na distribuição de outros fatores prognósticos entre os portadores dos dois graus. Remissão completa após o tratamento inicial foi obtida em 85,7% dos casos de EN I e em 82,4% dos casos de EN II (p = 0,75). A probabilidade estimada de sobrevida global em cinco anos foi de 67% para EN I e de 83,5% para EN II (p = 0,13) e a taxa de sobrevida livre de doença em cinco anos foi de 85,2% versus 87%, respectivamente (p = 0,72). CONCLUSÃO: Nesta população de pacientes uniformemente tratados a graduação histológica BNLI não esteve associada com o prognóstico do LH EN.BACKGROUND: Nodular sclerosis (NS), a frequent histological subtype of Hodgkin’s lymphoma (HL), presents great variability in its cellular composition. In the 80's, researchers of the British National Lymphoma Investigation (BNLI) proposed a histological-based subclassification for NS HL. They identified two histological grades - NS HL grade I (NS HL I) and NS HL grade II (NS HL II) - and reported that NS II patients had a lower survival rate in comparison with NS I patients. Others studies, however, did not reproduce these findings. OBJECTIVE: Evaluate the prognostic significance of the BNLI grading system. MATERIAL AND METHOD: We retrospectively studied 69 NS HL patients. More than 90% of the included cases were treated with combined modality therapy or exclusive chemotherapy, the treatment type was not different for NS I and NS II patients. RESULTS: Thirty-five cases (51%) were classified as NS I and 34 (49%) as NS II. We did not observe significant differences in the distribution of other prognostic factors between the two NS grades. The complete remission rate after initial therapy was 85.7% in the NS I group and 82.4% in the NS II group (p = 0.75). The predicted 5-year overall survival rate was 67% in the NS I patients and 83.5% in the NS II patients (p = 0.13). The predicted 5-year disease free survival rate for NSI and NSII patients was 85.2% and 87%, respectively (p = 0.72). CONCLUSION: The histological BNLI grading system was not associated with the prognosis of this uniformly treated NS LH population.

Luís Fernando Pracchia; Valeria Buccheri; Yara de Menezes; Sheila A. C. Siqueira; Nair Sumie Mori; Dalton Alencar Fisher Chamone

2005-01-01

239

Significado prognóstico dos graus histológicos do linfoma de Hodgkin do tipo esclerose nodular/ Prognostic significance of histopathological grading of nodular sclerosing Hodgkin?s lymphoma  

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Full Text Available Abstract in portuguese INTRODUÇÃO: A esclerose nodular (EN), do tipo histológico freqüente do linfoma de Hodgkin (LH), apresenta grande variabilidade em sua composição celular. Na década de 80, pesquisadores do British National Lymphoma Investigation (BNLI) propuseram uma subclassificação histológica do LH EN. Eles identificaram dois graus histológicos - o LH EN grau I (LH EN I) e o LH EN grau II (LH EN II) - e demonstraram que os portadores de LH EN II apresentavam menor sobrevida e (more) m comparação aos portadores de LH EN I. Outros estudos, entretanto, não reproduziram esses achados. OBJETIVO: Avaliar o significado prognóstico da graduação histológica proposta pelo BNLI. MATERIAIS E MÉTODOS: Estudo retrospectivo que incluiu 69 casos de LH EN. Mais de 90% dos casos foram tratados com terapia combinada ou quimioterapia exclusiva, não havendo diferença no tipo de tratamento oferecido a depender do grau histológico. RESULTADOS: Trinta e cinco casos (51%) foram classificados com EN I e 34 (49%) como EN II. Não observamos diferenças na distribuição de outros fatores prognósticos entre os portadores dos dois graus. Remissão completa após o tratamento inicial foi obtida em 85,7% dos casos de EN I e em 82,4% dos casos de EN II (p = 0,75). A probabilidade estimada de sobrevida global em cinco anos foi de 67% para EN I e de 83,5% para EN II (p = 0,13) e a taxa de sobrevida livre de doença em cinco anos foi de 85,2% versus 87%, respectivamente (p = 0,72). CONCLUSÃO: Nesta população de pacientes uniformemente tratados a graduação histológica BNLI não esteve associada com o prognóstico do LH EN. Abstract in english BACKGROUND: Nodular sclerosis (NS), a frequent histological subtype of Hodgkin?s lymphoma (HL), presents great variability in its cellular composition. In the 80's, researchers of the British National Lymphoma Investigation (BNLI) proposed a histological-based subclassification for NS HL. They identified two histological grades - NS HL grade I (NS HL I) and NS HL grade II (NS HL II) - and reported that NS II patients had a lower survival rate in comparison with NS I pati (more) ents. Others studies, however, did not reproduce these findings. OBJECTIVE: Evaluate the prognostic significance of the BNLI grading system. MATERIAL AND METHOD: We retrospectively studied 69 NS HL patients. More than 90% of the included cases were treated with combined modality therapy or exclusive chemotherapy, the treatment type was not different for NS I and NS II patients. RESULTS: Thirty-five cases (51%) were classified as NS I and 34 (49%) as NS II. We did not observe significant differences in the distribution of other prognostic factors between the two NS grades. The complete remission rate after initial therapy was 85.7% in the NS I group and 82.4% in the NS II group (p = 0.75). The predicted 5-year overall survival rate was 67% in the NS I patients and 83.5% in the NS II patients (p = 0.13). The predicted 5-year disease free survival rate for NSI and NSII patients was 85.2% and 87%, respectively (p = 0.72). CONCLUSION: The histological BNLI grading system was not associated with the prognosis of this uniformly treated NS LH population.

Pracchia, Luís Fernando; Buccheri, Valeria; Menezes, Yara de; Siqueira, Sheila A. C.; Mori, Nair Sumie; Chamone, Dalton Alencar Fisher

2005-10-01

240

Two cases of myomectomy complicated by intravascular hemolysis and renal failure: disseminated intravascular coagulation or hemolytic uremic syndrome?  

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OBJECTIVE: To present two cases of myomectomy complicated by intravascular hemolysis leading to acute renal failure and discuss the differential diagnosis and possible mechanism. DESIGN: Case report. SETTING: Minimally Invasive Therapy Unit, University Department of Obstetrics and Gynecology. PATIENT(S): Two premenopausal patients with uterine fibroids. INTERVENTION(S): Both patients underwent otherwise uncomplicated myomectomies, one by laparotomy and one by laparoscopy, with tourniquets around the uterine and ovarian vessels being used to control intraoperative bleeding. MAIN OUTCOME MEASURE(S): Renal function in the postoperative period. RESULT(S): Both patients developed a very rare complication after surgery of severe thrombocytopenia with microangiopathic hemolytic anemia leading to acute renal failure. One patient made a full recovery within weeks but the other still has reduced renal function almost 2 years after the surgery. The differential diagnosis consisted of disseminated intravascular coagulation or hemolytic uremic syndrome. CONCLUSION(S): The etiology of thrombotic microangiopathy in these patients was unclear, but disruption and manipulation of fibroids during surgery may have led to the dissemination of pro-coagulant tissue factor containing particles leading to disseminated intravascular coagulation or hemolytic uremic syndrome, perhaps aggravated by utero-ovarian ischemia caused by the tourniquets.

Tsimpanakos I; Connolly J; Alatzoglou KS; Rowan C; Magos A

2010-04-01

 
 
 
 
241

Linfomas de la órbita y anexos oculares: Correlación clínico patológica de 25 casos Orbital and ocular adnexal lymphomas: Clinico-pathological correlation in 25 cases  

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Full Text Available Se evaluaron las características clínicas, histológicas y la evolución de una cohorte de pacientes con linfomas de la órbita y anexos oculares. Entre 1995 y 2008 se estudiaron 25 casos de linfomas de la órbita y anexos oculares en un centro oncológico de referencia. En cada caso se analizó el inmunofenotipo usando un panel de anticuerpos monoclonales (CD45, CD20, CD3, CD5, CD23, BCL2, BCL6, BCL10, Ki67, CD30, CD15, BCL1, Kappa, Lambda, CD138). Las lesiones fueron evaluadas utilizando el sistema de clasificación de linfomas (OMS, 2008). Se analizaron 23 linfomas primarios y dos secundarios. Los subtipos histológicos fueron: 16 linfomas B de la zona marginal asociados a las mucosas (MALT), cuatro linfomas difusos de células grandes B, dos linfomas foliculares y un paciente con linfoma Hodgkin. De los 25 casos estudiados, 22 presentaron estadios localizados. El linfoma MALT fue el subtipo más frecuente. En este estudio se observó enfermedad localizada en la mayoría de los casos y con baja progresión a distancia.Clinical, histological features and outcome of a cohort of patients with orbital and adnexal lymphoproliferative tumors were evaluated. Twenty-five cases in an oncologic referral center from 1995 to 2008, were included in the study. Each case had detailed immunophenotypic analysis using a panel of monoclonal antibodies (CD45, CD20, CD3, CD5, CD23, BCL2, BCL6, BCL10, Ki67, CD30, CD15, BCL1, Kappa, Lambda, CD138). Lesions were classified by using WHO (2008) lymphomas classification. Twenty-three patients were found to have primary and two secondary lymphomas. Histological subtypes were: 16 patients with marginal zone B cell lymphoma of mucosa-associated lymphoid tissue (MALT) lymphoma, four diffuse large B cell lymphomas, two mantle cell lymphomas, two follicular lymphomas, and one Hodgkin lymphoma. Among the 25 patients studied, 22 had localized stage. Extranodal marginal zone lymphoma was the most frequent type of primary orbital and adnexal lymphoma. In this study localized disease was observed in most cases, and distant spread of the lymphomas was infrequent.

Erica A. Rojas Bilbao; Martina Nesprias; Carla Pulero; Liliana Giménez; Marta Zerga; Ana María Chirife

2010-01-01

242

Linfomas de la órbita y anexos oculares: Correlación clínico patológica de 25 casos/ Orbital and ocular adnexal lymphomas: Clinico-pathological correlation in 25 cases  

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Full Text Available Abstract in spanish Se evaluaron las características clínicas, histológicas y la evolución de una cohorte de pacientes con linfomas de la órbita y anexos oculares. Entre 1995 y 2008 se estudiaron 25 casos de linfomas de la órbita y anexos oculares en un centro oncológico de referencia. En cada caso se analizó el inmunofenotipo usando un panel de anticuerpos monoclonales (CD45, CD20, CD3, CD5, CD23, BCL2, BCL6, BCL10, Ki67, CD30, CD15, BCL1, Kappa, Lambda, CD138). Las lesiones fueron (more) evaluadas utilizando el sistema de clasificación de linfomas (OMS, 2008). Se analizaron 23 linfomas primarios y dos secundarios. Los subtipos histológicos fueron: 16 linfomas B de la zona marginal asociados a las mucosas (MALT), cuatro linfomas difusos de células grandes B, dos linfomas foliculares y un paciente con linfoma Hodgkin. De los 25 casos estudiados, 22 presentaron estadios localizados. El linfoma MALT fue el subtipo más frecuente. En este estudio se observó enfermedad localizada en la mayoría de los casos y con baja progresión a distancia. Abstract in english Clinical, histological features and outcome of a cohort of patients with orbital and adnexal lymphoproliferative tumors were evaluated. Twenty-five cases in an oncologic referral center from 1995 to 2008, were included in the study. Each case had detailed immunophenotypic analysis using a panel of monoclonal antibodies (CD45, CD20, CD3, CD5, CD23, BCL2, BCL6, BCL10, Ki67, CD30, CD15, BCL1, Kappa, Lambda, CD138). Lesions were classified by using WHO (2008) lymphomas classi (more) fication. Twenty-three patients were found to have primary and two secondary lymphomas. Histological subtypes were: 16 patients with marginal zone B cell lymphoma of mucosa-associated lymphoid tissue (MALT) lymphoma, four diffuse large B cell lymphomas, two mantle cell lymphomas, two follicular lymphomas, and one Hodgkin lymphoma. Among the 25 patients studied, 22 had localized stage. Extranodal marginal zone lymphoma was the most frequent type of primary orbital and adnexal lymphoma. In this study localized disease was observed in most cases, and distant spread of the lymphomas was infrequent.

Rojas Bilbao, Erica A.; Nesprias, Martina; Pulero, Carla; Giménez, Liliana; Zerga, Marta; Chirife, Ana María

2010-08-01

243

Rituximab monotherapy for splenic marginal zone lymphoma with villous lymphocytes: report on long-term disease control for two patients with recurrence after splenectomy/ Monoterapia com rituximab no linfoma da zona marginal esplênico com linfócitos vilosos: relato de dois casos de pacientes com controle prolongado da doença depois de recidiva após esplenectomia  

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Full Text Available Abstract in portuguese CONTEXTO: Os linfomas da zona marginal esplênicos constituem uma desordem linfoproliferativa de células B que apresenta um prognóstico favorável, com sobrevida global de cinco anos estimada em 70%. A maioria dos pacientes sintomáticos é submetida a esplenectomia enquanto alguns recebem quimioterapia terapêutica de primeira linha, especialmente com análogos de purinas. Não existem diretrizes específicas para o tratamento dos pacientes que falham à esplenectomia: (more) ainda é incerto se deveriam ser tratados com quimioterapia citotóxica, em virtude de apresentarem um linfoma recidivado (e teoricamente mais agressivo) ou se deveriam ser poupados de um tratamento mais tóxico pelo fato de apresentarem uma doença que usualmente se desenvolve de forma mais indolente, mesmo quando recidivada. RELATO DE CASO: Nesta publicação, são apresentados dois casos nos quais a doença recidivou após esplenectomia e que foram satisfatoriamente tratados com monoterapia com rituximabe. A observação desses casos sugere que a postergação de tratamentos citotóxicos pode ser possível pelo menos em algumas situações. Cabe ressaltar que a evidência para essa conduta é embasada apenas em relatos de caso, uma vez que não existem ensaios clínicos randomizados a respeito desse tema. Abstract in english CONTEXT: Splenic marginal zone lymphoma (SMZL) is a lymphoproliferative B-cell disorder that has a favorable prognosis, with estimated overall five-year survival of 70%. The majority of symptomatic patients undergo splenectomy, while a few receive first-line chemotherapy, especially with purine analogues. There are no specific treatment guidelines for patients for whom splenectomy fails to provide a cure. It is still unclear whether these patients should undergo cytotoxic (more) chemotherapy, considering they have now a relapsed lymphoma (which is theoretically more aggressive), or whether they should be spared from treatments of greater toxicity, given that their disease usually develops with a more indolent course, even when it recurs. CASE REPORT: Here, we present two patients whose disease recurred after splenectomy and for whom rituximab monotherapy provided satisfactory treatment. From these cases, it can be suggested that postponement of cytotoxic treatments may be possible in at least some situations. It needs to be emphasized that the evidence to support this approach is based only on case reports, since there are no randomized clinical trials on this subject.

Debiasi, Márcio; Hehnemann, Marluce; Garicochea, Bernardo

2010-12-01

244

Insuficiencia suprarrenal causada por un linfoma no-Hodgking B primario suprarrenal: presentación de un caso y revisión de la literatura/ Adrenal faillure caused by primary adrenal non-hodgking lymphoma: a case report and review of the literature  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Presentamos el caso de un varón de 78 años que ingresa por un cuadro de debut de insuficiencia suprarrenal. Se realizó un estudio TC que mostró masas suprarrenales bilaterales de hasta 10 cm. Se completó estudio con biopsia percutanea de masa suprarrenal y biopsia de médula ósea, siendo diagnosticado de Linfoma no Hodgkin B difuso de células grandes primario suprarrenal con afectación suprarrenal bilateral. El paciente fue tratado con quimioterapia según esquema (more) R-CHOP (Rituximab, Ciclofosfamida, Doxorrubicina liposomal, Vincristina y Prednisona). Tras 4 ciclos de quimioterapia se objetivo una respuesta parcial radiológica. Se suspendió la quimioterapia por toxicidad grado IV, completándose el tratamiento con RT sobre masa suprarrenal derecha. El paciente falleció por cuadro séptico pocos días después de finalizar la radioterapia, sin objetivarse progresión de la enfermedad. Abstract in english We report a case of 78-year old man who presented with symptoms of adrenal insufficiency. The computed tomography (CT) scan showed the presence of bilateral adrenal masses. A CT-scan guided needle biopsy revealed diffuse large- B cell lymphoma. The absence of pathological findings in clinical, bone marrow and CT scan examinations supported the diagnosis of primary non- Hodgkin Lymphoma of the adrenal glands. The patient was treated with four cycles of R-CHOP chemotherapy (more) with Rituximab, liposomal Doxorubicin, Cyclophosphamide, Vincristine and Prednisolone. At the end of fourth cycle there was radiological improvement but the chemotherapy was stopped because of IV grade toxicity. He completed treatment with radiotherapy of right adrenal mass. Few days after finishing radiation therapy the pacient died due to a disseminated infection. No progressive disease was founded.

Hernández Marín, B.; Díaz Muñoz de la Espada, V.M.; Álvarez Álvarez, R.; Encinas García, S.; Khosravi Shahi, P.; Pérez Fernández, R.; Pérez Manga, G.

2008-03-01

245

Actividad laboral en una cohorte de pacientes con linfoma non Hodgkin  

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Full Text Available Introducción. La actividad laboral en el cáncer es un aspecto psicosocial que ha recibido poca atención hasta el momento actual, a pesar de considerarse una dimensión de la calidad de vida para estos pacientes. Objetivos. La reinserción y adaptación al entorno laboral fueron investigados en una cohorte de pacientes con linfoma no Hodgkin para describir los factores que influyen en la vuelta al trabajo de estos enfermos. Pacientes y métodos. El estudio incluyó 37 pacientes consecutivos diagnosticados de un linfoma no Hodgkin y empleados en el momento del diagnóstico. El cuestionario incluyó aspectos epidemiológicos, clínicos y laborales (32 variables en total). El estudio fue aprobado por el Comité Ético y de Investigación Cínica del Hospital La Paz. Todos los pacientes dieron su consentimiento para participar en el estudio y para la utilización de los datos de su historia clínica. Resultados. El 86,5% de los pacientes pasaron a inactivos tras comenzar el tratamiento de la enfermedad y un 32,5% lo seguían estando tras éste. No hubo diferencias en la influencia de las distintas variables analizadas con respecto a la actividad laboral tras el diagnóstico. Sin embargo, el realizar un trabajo predominantemente físico y la presencia de secuelas derivadas del tumor o del tratamiento de éste, sí influyeron en la reinserción laboral una vez finalizado el tratamiento específico. La mayoría de los pacientes no creían que el tener la enfermedad les perjudicaría en su puesto de trabajo y, en casi todos los casos, tanto sus compañeros como sus jefes conocían que tenían un tumor. Conclusiones. Éste es el primer estudio exploratorio en nuestro país acerca de la reinserción laboral de los pacientes diagnosticados de un linfoma. Son necesarios más trabajos para establecer las dificultades que tienen este tipo de enfermos en la reinserción laboral y establecer las medidas adecuadas para la mejora de este proceso.Background. Cancer affects many dimensions determining quality of life, including work. However, the importance of work to cancer survivors has received little attention. Aim. Employment and work-related disability were investigated in a cohort of non-Hodgkin´s lymphoma patients to describe a possible discrimination and other work issues. Patients and Methods. The study included consecutively 37 non-Hodgkin´s lymphoma patients who were employed at diagnosis. The questionnaire included cancerrelated symptoms and work-related factors. Clinical details were obtained from the medical record. Patients were interviewed face to face and 32 variables were recorded. The study was approved by the Ethical Committee of Hospital La Paz. All patients gave consent to participate. Results. Eighty six per cent of patients were unable to work after diagnosis, but 68% returned to work at the end of treatment. The type of worker and the sequelae of the disease or its treatment were independently associated with the ability to work after the end of treatment. Almost all patients told their employers and co-workers about their disease. None reported job discrimination. Conclusions. This is the first exploratory study in Spain about labour reintegration in non-Hodgkin´s lymphomas. Further studies are necessary.

R. Molina Villaverde; J. Feliu Batle; A. Villalba Yllan; A.M. Jiménez Gordo; B. San José Valiente; M. González Barón

2008-01-01

246

Actividad laboral en una cohorte de pacientes con linfoma non Hodgkin  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Introducción. La actividad laboral en el cáncer es un aspecto psicosocial que ha recibido poca atención hasta el momento actual, a pesar de considerarse una dimensión de la calidad de vida para estos pacientes. Objetivos. La reinserción y adaptación al entorno laboral fueron investigados en una cohorte de pacientes con linfoma no Hodgkin para describir los factores que influyen en la vuelta al trabajo de estos enfermos. Pacientes y métodos. El estudio incluyó 37 p (more) acientes consecutivos diagnosticados de un linfoma no Hodgkin y empleados en el momento del diagnóstico. El cuestionario incluyó aspectos epidemiológicos, clínicos y laborales (32 variables en total). El estudio fue aprobado por el Comité Ético y de Investigación Cínica del Hospital La Paz. Todos los pacientes dieron su consentimiento para participar en el estudio y para la utilización de los datos de su historia clínica. Resultados. El 86,5% de los pacientes pasaron a inactivos tras comenzar el tratamiento de la enfermedad y un 32,5% lo seguían estando tras éste. No hubo diferencias en la influencia de las distintas variables analizadas con respecto a la actividad laboral tras el diagnóstico. Sin embargo, el realizar un trabajo predominantemente físico y la presencia de secuelas derivadas del tumor o del tratamiento de éste, sí influyeron en la reinserción laboral una vez finalizado el tratamiento específico. La mayoría de los pacientes no creían que el tener la enfermedad les perjudicaría en su puesto de trabajo y, en casi todos los casos, tanto sus compañeros como sus jefes conocían que tenían un tumor. Conclusiones. Éste es el primer estudio exploratorio en nuestro país acerca de la reinserción laboral de los pacientes diagnosticados de un linfoma. Son necesarios más trabajos para establecer las dificultades que tienen este tipo de enfermos en la reinserción laboral y establecer las medidas adecuadas para la mejora de este proceso. Abstract in english Background. Cancer affects many dimensions determining quality of life, including work. However, the importance of work to cancer survivors has received little attention. Aim. Employment and work-related disability were investigated in a cohort of non-Hodgkin´s lymphoma patients to describe a possible discrimination and other work issues. Patients and Methods. The study included consecutively 37 non-Hodgkin´s lymphoma patients who were employed at diagnosis. The questio (more) nnaire included cancerrelated symptoms and work-related factors. Clinical details were obtained from the medical record. Patients were interviewed face to face and 32 variables were recorded. The study was approved by the Ethical Committee of Hospital La Paz. All patients gave consent to participate. Results. Eighty six per cent of patients were unable to work after diagnosis, but 68% returned to work at the end of treatment. The type of worker and the sequelae of the disease or its treatment were independently associated with the ability to work after the end of treatment. Almost all patients told their employers and co-workers about their disease. None reported job discrimination. Conclusions. This is the first exploratory study in Spain about labour reintegration in non-Hodgkin´s lymphomas. Further studies are necessary.

Molina Villaverde, R.; Feliu Batle, J.; Villalba Yllan, A.; Jiménez Gordo, A.M.; San José Valiente, B.; González Barón, M.

2008-03-01

247

Linfoma de hodgkin extranodal: Reporte de un caso y revisión de la literatura  

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Full Text Available OBJETIVOS: Estudiar un paciente con diagnóstico de linfoma de Hodgkin extranodal, entre los subtipos extranodales esta el hepato-esplénico, frecuente en la 3ª y 4ª década de la vida, predomina en el sexo masculino, con sobrevida de 3 a 5 años. RESULTADOS: Paciente masculino 35 años, diagnóstico de endocarditis bacteriana de válvula aórtica nativa. Referido a nuestro centro por persistir fiebre después de tratamiento por 31 días y múltiples antibióticos. Al egreso presenta elevación de transaminasas rango de 2-3 veces el valor normal, BT: 9 mg %, FA: 1 200 UI/L, examen funcional: fiebre de 8 meses previos al diagnóstico de endocarditis y pérdida de peso 4 - 5 kg. Ultrasonido abdominal: lesión de ocupación de espacio lóbulo hepático derecho, segmento VII y esplénica. Alfa feto proteína, antígeno carcino embrionario, CA 19.9; normales. Gastroscopia, colonoscopia, TAC de tórax y cuello normal. RMN: hepatomegalia, LOE hepático segmento VII de 6,5 cm. Esplenomegalia con LOE de 3,5 cm aspecto infiltrativo. RMN de columna lumbar: Lesiones multifocales en médula ósea de cuerpos vertebrales L1-L5. Biopsia hepática dirigida por tomografía: infiltración hepática por linfoma, diagnóstico corroborado por inmunohistoquímica, recibe tratamiento con quimioterapia normalizándose las pruebas hepáticas y desaparición de lesiones. CONCLUSIONES: El linfoma de Hodgkin hepato esplénico es infrecuente indica un curso clínico agresivo. A menudo es insuficiente el material diagnóstico de confirmación. La presentación clínica es variada. De evolución tórpida, en ocasiones diagnosticados post mortem ya que su baja incidencia no despierta sospecha en el clínico.OBJECTIVES: To study a patient with extranodal Hodgkin lymphomas in the extranodal subtypes there was hepato-esplenic. It’s frequent in 3ª and 4ª decade of life predominates, in males, and they have an expectancy of life between 3-5 years. RESULTS: 35 years old male patient, with the diagnosis of bacterial endocarditis of native aortic valve. Referred to our hospital because persist fever after receiving treatment for 30 more days, with multiple antibiotics. Before the discharge the serum enzymes began to raise 2-3 times the normal value, TB: 9 mg %, AP: 1200 UI/L, he referred to have fever during approximately 8 months, lost of weight of 4 - 5 kg. Abdominal echo: Hepatic lesion LOE in splenic segment VII and LOE. Ca19.9 alpha fetoprotein, carcinoembrionic antigen were negative, upper and lower endoscopy, thorax and neck TAC abdominal reported normal MRI: Hepatomegaly, hepatic lesion in segment VII splenomegaly with a 3.5 cm mass. Lumbar column MRI: Multifocal bony marrow injuries of vertebral bodies L1 to L5. A percutaneous hepatic biopsy was made: Hepatic infiltration by Hodgkin lymphoma. The diagnosis was corroborated by Immunohistochemestry Patient received chemotherapy with normalization of liver tests and disappear the lesions. CONCLUSIONS: Hepato-splenic Hodgkin lymphoma is infrequent and indicates aggressive clinical courses, often it is insufficient the material of diagnosis confirmation. Has a varied clinic presentation. It has a bad development and in multiple occasions diagnosed post mortem since its low incidence does not wake up suspicion clinical.

RORAYMA VALERO; BEATRIZ PERNALETE; LISBETH ZURITA; ANDRY RENDO; PEDRO JIMÉNEZ; DALILA ARANGUIBEL; FRANCISCO PIMENTEL; JOSÉ LUÍS MUJICA; JACINTO LARA

2007-01-01

248

Correlación clinicopatológica de las alteraciones hepáticas en las autopsias de pacientes con linfomas  

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Full Text Available Se revisaron las alteraciones histopatológicas del hígado en las necropsias de 71 pacientes con linfomas malignos, 24 con enfermedad de Hodgkin (EH) y 47 con linfomas no Hodgkin (LNH). Se constató la infiltración linfomatosa en 6 pacientes (8 %) en la biopsia hepática inicial y en 44 (62 %) en las necropsias y este último hallazgo fue mayor en la EH (16/24,67 %) que en los LNH (28/47,60 %). Se encontraron sólo 8 fallecidos (11 %) que no tenían ninguna alteración y 19 (27 %) presentaron alteraciones histológicas no infiltrativas, aisladas o combinadas. Se observaron la fibrosis y la necrosis con una frecuencia significativamente mayor en la EH (16/24,67 % p = 0,0000 y 13/24,54 %, p = 0,0208) y se sugirió la posibilidad de que la enfermedad tenga un papel patogénico en las mismas. Se comprobó que la congestión y la esteatosis tuvieron mayor incidencia en los LNH (28/47,60 % y 24/47,49 %) y que la congestión fue la alteración inespecífica más frecuente en todos los pacientes (53,5 %) seguida de la necrosis (45 %). No hubo correlación entre los hallazgos histológicos de las necropsias con el estado de la enfermedad, presencia de visceromegalia, infiltración hepática inicial y terapéutica y tampoco se evidenció interacción entre diagnóstico y extensión de la enfermedad con respecto a las alteraciones histológicas. Se confirmó el incremento de la infiltración hepática con la progresión de la enfermedad en los pacientes con linfomas malignos y que 85 % de estos casos tiene algún tipo de alteración histopatológica en el hígado, infiltrativas y no infiltrativas, al momento del fallecimiento.Liver histopathological alterations were examined in 71 autopsies of patients with malignant lymphomas of whom 24 had Hodgkin´s disease (HD) and 47 non Hodgkin´s lymphomas. Lymphomatous infiltration was observed in 6 patients by initial liver biopsy (8 %) and in 44 patients by autopsies (62 %). This condition was higher in HD with 16 out of 24 patients (67 %) than in NHL with 28 out of 47 patients (60 %). Only 8 deceased (11 %) did not present any kind of alterations whereas 19 (27 %) had non-infiltrating histological alterations either isolated or combined. Frequency of fibrosis and necrosis was observed to be significantly higher in HD with 16 out of 24 patients (67 %, p = 0.0000) and 13 out of 24 patients (54 %), p = 0.0208) respectively, thus it was suggested that this disease is likely to have a pathogenic role in both processes. It was proved that congestion and steatosis had higher incidence on NHL with 28 out of 47 patients (60 %) and 24 out of 47 patients (49 %) respectively and that congestion was the most frequent non-specific alteration in all patients (53.5 % followed by necrosis (45 %). Neither correlation between histological findings from autopsies and disease status, visceromegaly, initial and therapeutical hepatic infiltration nor interaction between disease lenght and diagnosis, and histological alterations were found. It was confirmed that the increase of hepatic infiltration was linked to the course of the disease in patients with malignat lymphomas and that 85 % of these cases had some type of histopathological alteration either infiltrating or non-infiltrating in the liver at the time of their death.

Ariel Spec Frías; José Carnot Uria; Carlos Domínguez Álvarez; Raúl Castro Arenas; Jorge Muñio Perurena; Guillermo Pérez Román

1999-01-01

249

Linfoma primário do sistema nervoso central Primary central nervous system lymphoma  

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Full Text Available O linfoma primário do sistema nervoso central (LPSNC) é um linfoma extralinfonodal que, ao diagnóstico, encontra-se restrito ao parênquima cerebral, às meninges e/ou cordão espinhal e/ou olhos. Sua incidência triplicou nas últimas três décadas para 0,4 casos por 100.000 habitantes, representando 4% dos tumores do sistema nervoso central (SNC). Embora pacientes infectados pelo HIV tenham 3.600 vezes maior risco para o desenvolvimento do LPSNC, a incidência não aumentou apenas neste grupo de pessoas. Dados sugerem reduções da incidência de LPSNC em pacientes infectados após a introdução de drogas anti-retrovirais. Cerca de 90% dos casos de LPSNC são classificados como linfoma difuso de grandes células B, 10% têm envolvimento ocular e 10% são HIV positivos. A apresentação clínica depende da localização tumoral, prevalecendo os sintomas neurológicos em detrimento aos sistêmicos. Os exames de tomografia computadorizada (TC) e ressonância nuclear magnética (RNM) são essenciais para o diagnóstico, porém o exame confirmatório deve ser o anatomopatológico. O estadiamento deve ser feito com exames de imagem e biópsia de medula óssea (BMO) bilateral. Os principais fatores de mau prognóstico são: performance status do paciente acima de 1, idade superior a 60 anos, DHL elevada, hiperproteinorraquia e acometimento de área cerebral não hemisférica. Alguns fatores de prognóstico biológicos também podem influenciar na sobrevida, a exemplo da expressão de Bcl-6, que confere melhor prognóstico. O tratamento de escolha é a combinação de quimioterapia contendo altas doses de metotrexate e radioterapia (RDT). Devido às altas taxas de neurotoxicidade associada à RDT, seu uso tem ficado mais restrito aos pacientes idosos, e os recidivados ou refratários.Primary Central Nervous System lymphoma (PCNSL) is an extranodal non-Hodgkin lymphoma in the brain, leptomeninges, spinal cord or eyes. The incidence of PCNSL increased approximately three-fold in the last decades. Nowadays, it represents 0.4 case per 100,000 people and accounts for 4% of all primary brain tumors. Although individuals infected with HIV have a 3,600-fold increased risk of developing PCNSL compared with the general population, the incidence has not increased only in AIDS group. Recent data suggest that the incidence of PCNSL declined in the AIDS group after the introduction of anti-retroviral drugs. Around 90% of PCNSL cases are classified as diffuse large B-cell lymphoma, 10% involve the eyes and 10% of patients are HIV positive. The clinical presentation depends on the location of the tumor with neurological rather than systemic symptoms. Computed tomography (CT) and magnetic resonance imaging (RMI) are essential in diagnosis, however the gold standard is tumor biopsy. Staging should be made with imaging and bilateral biopsy of bone marrow. The main poor prognosic parameters are performance status greater than 1, age older than 60 years, elevated DHL, high liquor protein concentration and tumor located within the deep regions of the brain. BCL-6 expression identified in the tumor confers a better prognosis. Currently, a combined therapy with high doses of methotrexate and whole-brain radiotherapy is the therapy of choice. Nowever, whole-brain radiotherapy should be carefully analyzed because neurotoxity is a frequent problem in the elderly and in relapsed and refractory patients.

Marcelo Bellesso; Renata Bizzetto; Juliana Pereira; Beatriz Beitler; Luis Fernando Pracchia; Dalton A. S. Chamone

2008-01-01

250

Linfoma no hodgkin difuso Virus de inmunodeficiencia humana: Uso del factor estimulante de colonia de granulocitos  

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Full Text Available Abstract in spanish OBJETIVO: El uso rutinario de factor estimulante de colonias de granulocitos y macrófagos por 10 días durante el tratamiento con dosis completas de ciclofosfamida, doxorrubicina, vincristina, prednisona en pacientes con linfoma no Hodgkin difuso asociado a la infección por el virus de inmunodeficiencia es muy costoso para ser financiado en países del tercer mundo. El objetivo del presente trabajo es evaluar la forma más adecuada de indicar este factor estimulante. M? (more) ?TODOS: Tratamos 22 pacientes con linfoma no Hodgkin difuso asociado a la infección por virus de inmunodeficiencia con dosis estándar del esquema de quimioterapia antes mencionado, usamos el factor estimulante de colonias después de un episodio de neutropenia febril hasta alcanzar una cifra absoluta de neutrófilos de 1 000/mm3. RESULTADOS: Obtuvimos una respuesta clínica: completa (36 %), parcial (32 %), enfermedad estable (14 %) y progresión (18 %). No hubo muertes relacionadas con la toxicidad. Neutropenia grado 3 ó 4 se observó en el 16 % de los ciclos, 8 % de los pacientes se complicaron con neutropenia febril. Diecisiete pacientes han muerto (sobrevida media 15 meses; rango, 2-70 meses). Cinco pacientes están vivos (sobrevida media 24+ meses; rango, 17 - 36+ meses). CONCLUSIONES: Podemos tratar pacientes con linfomas no Hodgkin asociados a la infección de virus de inmunodeficiencia con dosis completas de quimioterapia, alcanzar una buena respuesta tener un excelente perfil de toxicidad, con la utilización de factor estimulante de colonias de acuerdo a la necesidad y no de uso rutinario. Abstract in english OBJECTIVE: The routine use of stimulant colonies factor of macrophages and granulocytes for 10 days during complete treatment doses of ciclofosfamide doxorubicin vincristine and prednisone in patients with lymphomas diffuse no Hodgkin immune deficiency virus acquired associated is very expensive to be financiered in the third world countries. The main objective of this paper is to define the more rational use of this stimulant factor. METHODS: We treated 22 patients with (more) lymphomas diffuse no Hodgkin associated with virus immune deficiency acquired with standard dose of the chemotherapy regimen before mention for us, and the used of stimulant colonies factor after an episode of febrile neutropenia until the neutrophilos achieved and absolute count of 1 000/mm3. RESULTS: A clinical response was obtained: complete response (36 %), partial response (32 %), stable disease (14 %) and progression (18 %). There was no death related with the toxicity. Grade 3 or 4 neutropenia was observed in 16 % of the cycles but only 8% of the patients were complicated with febrile neutropenia. Seventeen patients were died (median survival 15 months; range, 2 - 70 months). There are five patients still alive (median survival 24+ months; range, 17 - 36+ months). CONCLUSIONS: Our experience showed that we can treat lymphoma no Hodgkin diffuse associated with immune deficiency acquired virus with complete dose of chemotherapy, achieve good responses and have excellent and acceptable toxicity profile, with the use of stimulant colonies factors as needed and not for routine.

Hernández, Dimas

2007-12-01

251

Linfoma no hodgkin difuso Virus de inmunodeficiencia humana: Uso del factor estimulante de colonia de granulocitos  

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Full Text Available OBJETIVO: El uso rutinario de factor estimulante de colonias de granulocitos y macrófagos por 10 días durante el tratamiento con dosis completas de ciclofosfamida, doxorrubicina, vincristina, prednisona en pacientes con linfoma no Hodgkin difuso asociado a la infección por el virus de inmunodeficiencia es muy costoso para ser financiado en países del tercer mundo. El objetivo del presente trabajo es evaluar la forma más adecuada de indicar este factor estimulante. MÉTODOS: Tratamos 22 pacientes con linfoma no Hodgkin difuso asociado a la infección por virus de inmunodeficiencia con dosis estándar del esquema de quimioterapia antes mencionado, usamos el factor estimulante de colonias después de un episodio de neutropenia febril hasta alcanzar una cifra absoluta de neutrófilos de 1 000/mm3. RESULTADOS: Obtuvimos una respuesta clínica: completa (36 %), parcial (32 %), enfermedad estable (14 %) y progresión (18 %). No hubo muertes relacionadas con la toxicidad. Neutropenia grado 3 ó 4 se observó en el 16 % de los ciclos, 8 % de los pacientes se complicaron con neutropenia febril. Diecisiete pacientes han muerto (sobrevida media 15 meses; rango, 2-70 meses). Cinco pacientes están vivos (sobrevida media 24+ meses; rango, 17 - 36+ meses). CONCLUSIONES: Podemos tratar pacientes con linfomas no Hodgkin asociados a la infección de virus de inmunodeficiencia con dosis completas de quimioterapia, alcanzar una buena respuesta tener un excelente perfil de toxicidad, con la utilización de factor estimulante de colonias de acuerdo a la necesidad y no de uso rutinario.OBJECTIVE: The routine use of stimulant colonies factor of macrophages and granulocytes for 10 days during complete treatment doses of ciclofosfamide doxorubicin vincristine and prednisone in patients with lymphomas diffuse no Hodgkin immune deficiency virus acquired associated is very expensive to be financiered in the third world countries. The main objective of this paper is to define the more rational use of this stimulant factor. METHODS: We treated 22 patients with lymphomas diffuse no Hodgkin associated with virus immune deficiency acquired with standard dose of the chemotherapy regimen before mention for us, and the used of stimulant colonies factor after an episode of febrile neutropenia until the neutrophilos achieved and absolute count of 1 000/mm3. RESULTS: A clinical response was obtained: complete response (36 %), partial response (32 %), stable disease (14 %) and progression (18 %). There was no death related with the toxicity. Grade 3 or 4 neutropenia was observed in 16 % of the cycles but only 8% of the patients were complicated with febrile neutropenia. Seventeen patients were died (median survival 15 months; range, 2 - 70 months). There are five patients still alive (median survival 24+ months; range, 17 - 36+ months). CONCLUSIONS: Our experience showed that we can treat lymphoma no Hodgkin diffuse associated with immune deficiency acquired virus with complete dose of chemotherapy, achieve good responses and have excellent and acceptable toxicity profile, with the use of stimulant colonies factors as needed and not for routine.

Dimas Hernández

2007-01-01

252

Linfoma primário do sistema nervoso central/ Primary central nervous system lymphoma  

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Full Text Available Abstract in portuguese O linfoma primário do sistema nervoso central (LPSNC) é um linfoma extralinfonodal que, ao diagnóstico, encontra-se restrito ao parênquima cerebral, às meninges e/ou cordão espinhal e/ou olhos. Sua incidência triplicou nas últimas três décadas para 0,4 casos por 100.000 habitantes, representando 4% dos tumores do sistema nervoso central (SNC). Embora pacientes infectados pelo HIV tenham 3.600 vezes maior risco para o desenvolvimento do LPSNC, a incidência não (more) aumentou apenas neste grupo de pessoas. Dados sugerem reduções da incidência de LPSNC em pacientes infectados após a introdução de drogas anti-retrovirais. Cerca de 90% dos casos de LPSNC são classificados como linfoma difuso de grandes células B, 10% têm envolvimento ocular e 10% são HIV positivos. A apresentação clínica depende da localização tumoral, prevalecendo os sintomas neurológicos em detrimento aos sistêmicos. Os exames de tomografia computadorizada (TC) e ressonância nuclear magnética (RNM) são essenciais para o diagnóstico, porém o exame confirmatório deve ser o anatomopatológico. O estadiamento deve ser feito com exames de imagem e biópsia de medula óssea (BMO) bilateral. Os principais fatores de mau prognóstico são: performance status do paciente acima de 1, idade superior a 60 anos, DHL elevada, hiperproteinorraquia e acometimento de área cerebral não hemisférica. Alguns fatores de prognóstico biológicos também podem influenciar na sobrevida, a exemplo da expressão de Bcl-6, que confere melhor prognóstico. O tratamento de escolha é a combinação de quimioterapia contendo altas doses de metotrexate e radioterapia (RDT). Devido às altas taxas de neurotoxicidade associada à RDT, seu uso tem ficado mais restrito aos pacientes idosos, e os recidivados ou refratários. Abstract in english Primary Central Nervous System lymphoma (PCNSL) is an extranodal non-Hodgkin lymphoma in the brain, leptomeninges, spinal cord or eyes. The incidence of PCNSL increased approximately three-fold in the last decades. Nowadays, it represents 0.4 case per 100,000 people and accounts for 4% of all primary brain tumors. Although individuals infected with HIV have a 3,600-fold increased risk of developing PCNSL compared with the general population, the incidence has not increase (more) d only in AIDS group. Recent data suggest that the incidence of PCNSL declined in the AIDS group after the introduction of anti-retroviral drugs. Around 90% of PCNSL cases are classified as diffuse large B-cell lymphoma, 10% involve the eyes and 10% of patients are HIV positive. The clinical presentation depends on the location of the tumor with neurological rather than systemic symptoms. Computed tomography (CT) and magnetic resonance imaging (RMI) are essential in diagnosis, however the gold standard is tumor biopsy. Staging should be made with imaging and bilateral biopsy of bone marrow. The main poor prognosic parameters are performance status greater than 1, age older than 60 years, elevated DHL, high liquor protein concentration and tumor located within the deep regions of the brain. BCL-6 expression identified in the tumor confers a better prognosis. Currently, a combined therapy with high doses of methotrexate and whole-brain radiotherapy is the therapy of choice. Nowever, whole-brain radiotherapy should be carefully analyzed because neurotoxity is a frequent problem in the elderly and in relapsed and refractory patients.

Bellesso, Marcelo; Bizzetto, Renata; Pereira, Juliana; Beitler, Beatriz; Pracchia, Luis Fernando; Chamone, Dalton A. S.

2008-02-01

253

Linfoma nasal de células T/NK/ Nasal T/NK cell lymphoma  

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Full Text Available Abstract in spanish El linfoma nasal de células T/ natural killer (NK) (LNT/NK), tras haber recibido múltiples denominaciones, ha sido definido y caracterizado en el año 2001 por la Organización Mundial de la Salud (OMS), basándose en una clasificación previa de la Revised European-American Lymphoma Classification (REAL), de la manera en que se le conoce actualmente. Su incidencia en el mundo occidental es baja, mientras que en Asia supone el segundo grupo de linfomas más frecuente, t (more) ras los gastrointestinales. Se localiza preferentemente en las fosas nasales y senos maxilares, mostrando un curso clínico agresivo, definido por una destrucción de los tejidos circundantes. Su diagnóstico definitivo se realiza por medio de técnicas de hibridación in situ, llegando a la determinación de su inmunofenotipo. Se ha observado una frecuente asociación con el virus de Epstein-Barr (VEB). El pronóstico de esta enfermedad viene definido por el índice pronóstico internacional (IPI) y por el volumen alcanzado por el tumor. A pesar de ser radiosensible, su pronóstico es infausto, aconteciendo la muerte del paciente poco tiempo después del diagnóstico, generalmente como consecuencia de las complicaciones del tratamiento. Abstract in english Nasal T-cell and Natural Killer cell lymphoma (NT/NKL), having been given many names, was defined and described in the year 2001 by the World Health Organization (WHO), on the basis of a previous classification by the Revised European-American Lymphoma Classification (REAL) as it is known today. Its incidence in the western world is low, while in Asia it represents the second most frequent group of lymphomas, followed by the gastrointestinal [lymphoma]. It is typically lo (more) cated in the nasal cavity and maxillary sinuses. It is associated with an aggressive clinical course, characterized by the destruction of surrounding tissue. The definitive diagnosis is made by means of in situ hybridization techniques, in order to determine the immunophenotype. Its association with the Epstein-Barr virus (EBV) has frequently been observed. The prognosis of this disease is determined by the International Prognosis Index (IPI) and by the size of the tumor. In spite of being responsive to irradiation therapy, its prognosis is gloomy, and the death of the patient occurs shortly after the diagnosis, generally as a result of treatment complications.

Torre Iturraspe, A.; Llorente Pendás, S.; Vicente Rodríguez, J.C. de; Junquera Gutiérrez, L.M.; López-Arranz Arranz, J.S.

2005-04-01

254

Aspectos clínicos e histopatológicos do linfoma nasossinusal Clinical and histopathological aspects of the sinonasal lymphoma  

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Full Text Available Os linfomas do trato nasossinusal são neoplasias incomuns, que reconhecidamente causam importantes lesões destrutivas no nariz e terço médio da face. Sua raridade pode levar os profissionais da área médica a erros no diagnóstico clínico, além de representar um verdadeiro desafio aos patologistas, por sua natureza inflamatória. OBJETIVO: O objetivo deste estudo é determinar os aspectos clínicos e histopatológicos do linfoma não-Hodgkin (LNH) do trato nasossinusal, correlacionando sítio tumoral e comportamento biológico com os subtipos do LNH. FORMA DE ESTUDO: Estudo de série. MATERIAL E MÉTODO: Foi realizada uma análise retrospectiva que incluiu 7 pacientes atendidos no ambulatório do serviço de otorrinolaringologia do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, no período de 1985 a 2003. RESULTADOS: As linhagens de células B e T/NK têm comportamento biológico diferente, assim como o sítio e apresentação clínica, sendo o diagnóstico histopatológico de extrema importância. CONCLUSÃO: A biópsia realizada adequadamente favorecerá um diagnóstico mais precoce e preciso, instituindo rapidamente a terapêutica adequada e melhorando o prognóstico e a sobrevida destes pacientes.Non-Hodgkin's lymphoma of the sinonasal tract is relatively uncommon and is now recognized as an important cause of destructive lesions of the nose and midface, which show a progressive course. It is this rarity that may cause clinicians to dismiss them as a benign inflammatory infiltrate and may present a considerable diagnostic challenge to the pathologist. AIM: The objective of the present study was to identify epidemiological, clinical and histopathological aspects of the non-Hodgkin's lymphoma of the sinonasal tract, correlation site and natural history with histopathological types. STUDY DESIGN: Series review. MATERIAL AND METHOD: The study group consisted of seven patients (4 men and 3 women) with clinical diagnosis of sinonasal non-Hodgkin lymphoma seen at the Clinic of the Division of Otorhinolaryngology, University of Sao Paulo, between 1985 and 2003. Patients age ranged from 22 to 54 years (mean: 38,2 years). The patients data obtained were analyzed regarding epidemiological, clinical, therapeutic and outcome factors. RESULTS: The site of tumor, clinical manifestations and natural history of the sinonasal lymphomas of the B-cell phenotype and T/NK cell phenotype were different, so the histopathological diagnosis is very important. CONCLUSION: The diagnosis can be extremely difficult. Biopsy specimens were necessary to establish the diagnosis of each patient. Early diagnosis and efficient therapy must be developed to improve patient outcome.

Bernardo C. Araújo Filho; Flavio A. Sakae; Marcus M. Lessa; Maura C. das Neves; Richard L. Voegels; Ossamu Butugan

2004-01-01

255

Linfomas no Hodgkin: Área metropolitana de Bucaramanga Non-Hodgkin lymphomas from Bucaramanga metropolitan area  

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Full Text Available Introducción: Ninguna neoplasia ha generado tanta confusión en sus sistemas de clasificación como los linfomas no Hodgkin (LNH). Una correcta tipificación es necesaria para el diagnóstico, pronóstico y tratamiento. Objetivos: clasificar los LNH del registro poblacional de cáncer del área metropolitana de Bucaramanga. Pacientes y métodos: SSe realizó un estudio observacional de corte transversal, utilizando como población los pacientes con LNH del área metropolitana de Bucaramanga de enero de 2000 a diciembre de 2006. La información se obtuvo de las historias clínicas y de inmunohistoquímica en bloques de parafina. Se utilizo la clasificación de linfomas de la OMS. Resultados: Se estudiaron 320 pacientes y se encontró predominio de la enfermedad en la 6ª y 7ª década. La distribución por género fue mayor en hombres con 61,26% y mujeres 45,6%. El sitio anatómico de compromiso más frecuente fue ganglios cervicales con 25,6%. La mayoría expresaron antígenos B, 86,8%, y T, 1,8%. El subtipo más frecuente fue difuso de célula grande en el 29,6%. Conclusiones: La mayoría los LNH del área metropolitana de Bucaramanga son de linajes B, nodales y de célula grande difuso. Fue evidente el uso limitado de otras técnicas para la clasificación de estas neoplasias en nuestra región. Salud UIS 2011; 43(1): 39-47Introduction: There is not a neoplasm that has generated such confusion on its classification system such as the Non- Hodgkin's lymphoma. An adequate classification is necessary for diagnosis, prognostic and treatment. Objectives: To classify the NHL from the Bucaramanga metropolitan area poblational cancer registry. Patients and methods: An observational cross-sectional study was made, using as population the patients with NHL from the Bucaramanga metropolitan area from January 2000 until December 2006. The information was obtained from the clinical records and inmunohistochemistry in paraffin blocks. The WHO lymphoma classification was used. Results: 320 patients were studied and a predominance of the disease was found on the 6th and 7th decade of life. Gender distribution was higher in men with 61.26% and women 45.6%. The anatomical site more frequently affected were the cervical lymph nodes with 25.6%. Most of them expressed B antigens, 86.8%, and T, 1.8%. The most frequent subtype was diffuse large B cell in 29.6%. Conclusions: Most of the NHL from the Bucaramanga metropolitan area are nodal, of B lineage, and diffuse large cell subtype. The limited use of other techniques for the classification of these neoplasms in our region was evident. Salud UIS 2011; 43(1): 39-47.

Carlos Alberto García Ramírez; Claudia Janeth Uribe Pérez; Paula Marina Niño Vargas; Daniel Sebastián Salazar Radi; Luis Enrique Vásquez Pinto

2011-01-01

256

Linfoma malt gastrico: Presentación de un caso y revision de literatura  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Escolar masculino de 9 años, con mielomeningocele corregido e hidrocefalia, enfermedad actual de 3 años de evolución, caracterizada por epigastralgia intermitente, recibe tratamiento sin mejoría. Dos días antes del ingreso se asocian vómitos, hematemesis y fiebre. Al examen físico, signos de desnutrición crónica, anemia, hepatomegalia y dolor en epigastrio. Se realiza endoscopia digestiva superior, revela reflujo gastroesofágico, tumoración gástrica ulcerada y (more) duodenitis inespecífica; se realizan ecosonograma abdominal, Rx esófago-estomago-duodeno contrastado y tomografía abdominal, donde se evidenció tumor en antro pilórico de 6 por 7 cm, estenosante y distensión gástrica. Recibe hemoderivados, por anemia aguda. Se realiza laparotomía exploradora, se evidencia gran tumoración friable, se extraen muestras para biopsia gástrica que reveló fragmento fibroadiposo con inflamación crónica y granulosa, reacción gigantocelular de tipo Langhans y tipo cuerpo extraño, necrosis y reagudización focal, las biopsias de ganglios, hígado y epiplón revelaron signos de inflamación crónica multifocal. Hemocultivos negativos, Anticore y Antigeno de superficie VHB negativos, PCR para CMV, estudio para BK y hongos negativos, examen de heces Blastocystis hominis, títulos de IgG contra Helicobacter pylori positivo 1.61 U/L, se inicio terapia con Metronidazol, Claritromicina y Omeprazol VEV, con remisión del tumor gástrico, todo lo cual sugiere Linfoma MALT gástrico o MALTOMA. Abstract in english Masculine student of 9 years, with mielomeningocele correted and hydrocephaly, present disease of 3 years of evolution, characterized by intermittent epigastralgia, receives treatment without improvement. Two days before the entrance vomits, hematemesis and fever are associated. To the physical examination, signs of chronic undernourishment, anemia, hepatomegalia and pain in epigastrio. Superior digestive endoscopia is made, reveals gastroesfágico ebb tide, ulcerada gast (more) ric tumoración and unspecific duodenitis; ecosonograma abdominal, Rx resisted esophagus-stomach-duodeno and tomography abdominal are made, where it demonstrated tumor in pyloric caven of 6 by 7 cm, estenosante and gastric distension. It receives hemoderivados by acute anemia. Exploratory laparotomía is made, demonstrated great coldable tumoración, samples for gastric biopsy are extracted that revealed fibroadiposo fragment with chronic and granular inflammation, reaction to gigantocelular of Langhans type and type strange body, necrosis and focal reagudización, the biopsies of ganflia, liver and epiplón revealed signs of multifocal chronic inflammation. Hemocultivos negative, Anticore and Antigeno of surface VHB negative, negative PCR for CMV, study for BK and fungi, examination Blastocystis hominis and Giardia lamblia positive, titles of IgG and biopsy Helicobacter pylori positive , beginning therapy with Metronidazol, Clarotromicina and Omeprazol VEV, remission of the gastric tumor, which suggests gastric Linfoma MALT or MALTOMA.

Hernández, Mariela; Rosendo, Yubisay; Cordero, Fabiola; Vásquez, Margarita; Delgado, Cesar; Alvirez, Iraheny

2010-09-01

257

Linfoma nasal de células T/NK Nasal T/NK cell lymphoma  

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Full Text Available El linfoma nasal de células T/ natural killer (NK) (LNT/NK), tras haber recibido múltiples denominaciones, ha sido definido y caracterizado en el año 2001 por la Organización Mundial de la Salud (OMS), basándose en una clasificación previa de la Revised European-American Lymphoma Classification (REAL), de la manera en que se le conoce actualmente. Su incidencia en el mundo occidental es baja, mientras que en Asia supone el segundo grupo de linfomas más frecuente, tras los gastrointestinales. Se localiza preferentemente en las fosas nasales y senos maxilares, mostrando un curso clínico agresivo, definido por una destrucción de los tejidos circundantes. Su diagnóstico definitivo se realiza por medio de técnicas de hibridación in situ, llegando a la determinación de su inmunofenotipo. Se ha observado una frecuente asociación con el virus de Epstein-Barr (VEB). El pronóstico de esta enfermedad viene definido por el índice pronóstico internacional (IPI) y por el volumen alcanzado por el tumor. A pesar de ser radiosensible, su pronóstico es infausto, aconteciendo la muerte del paciente poco tiempo después del diagnóstico, generalmente como consecuencia de las complicaciones del tratamiento.Nasal T-cell and Natural Killer cell lymphoma (NT/NKL), having been given many names, was defined and described in the year 2001 by the World Health Organization (WHO), on the basis of a previous classification by the Revised European-American Lymphoma Classification (REAL) as it is known today. Its incidence in the western world is low, while in Asia it represents the second most frequent group of lymphomas, followed by the gastrointestinal [lymphoma]. It is typically located in the nasal cavity and maxillary sinuses. It is associated with an aggressive clinical course, characterized by the destruction of surrounding tissue. The definitive diagnosis is made by means of in situ hybridization techniques, in order to determine the immunophenotype. Its association with the Epstein-Barr virus (EBV) has frequently been observed. The prognosis of this disease is determined by the International Prognosis Index (IPI) and by the size of the tumor. In spite of being responsive to irradiation therapy, its prognosis is gloomy, and the death of the patient occurs shortly after the diagnosis, generally as a result of treatment complications.

A. Torre Iturraspe; S. Llorente Pendás; J.C. de Vicente Rodríguez; L.M. Junquera Gutiérrez; J.S. López-Arranz Arranz

2005-01-01

258

Linfomas no Hodgkin: Área metropolitana de Bucaramanga/ Non-Hodgkin lymphomas from Bucaramanga metropolitan area  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Introducción: Ninguna neoplasia ha generado tanta confusión en sus sistemas de clasificación como los linfomas no Hodgkin (LNH). Una correcta tipificación es necesaria para el diagnóstico, pronóstico y tratamiento. Objetivos: clasificar los LNH del registro poblacional de cáncer del área metropolitana de Bucaramanga. Pacientes y métodos: SSe realizó un estudio observacional de corte transversal, utilizando como población los pacientes con LNH del área metropol (more) itana de Bucaramanga de enero de 2000 a diciembre de 2006. La información se obtuvo de las historias clínicas y de inmunohistoquímica en bloques de parafina. Se utilizo la clasificación de linfomas de la OMS. Resultados: Se estudiaron 320 pacientes y se encontró predominio de la enfermedad en la 6ª y 7ª década. La distribución por género fue mayor en hombres con 61,26% y mujeres 45,6%. El sitio anatómico de compromiso más frecuente fue ganglios cervicales con 25,6%. La mayoría expresaron antígenos B, 86,8%, y T, 1,8%. El subtipo más frecuente fue difuso de célula grande en el 29,6%. Conclusiones: La mayoría los LNH del área metropolitana de Bucaramanga son de linajes B, nodales y de célula grande difuso. Fue evidente el uso limitado de otras técnicas para la clasificación de estas neoplasias en nuestra región. Salud UIS 2011; 43(1): 39-47 Abstract in english Introduction: There is not a neoplasm that has generated such confusion on its classification system such as the Non- Hodgkin's lymphoma. An adequate classification is necessary for diagnosis, prognostic and treatment. Objectives: To classify the NHL from the Bucaramanga metropolitan area poblational cancer registry. Patients and methods: An observational cross-sectional study was made, using as population the patients with NHL from the Bucaramanga metropolitan area f (more) rom January 2000 until December 2006. The information was obtained from the clinical records and inmunohistochemistry in paraffin blocks. The WHO lymphoma classification was used. Results: 320 patients were studied and a predominance of the disease was found on the 6th and 7th decade of life. Gender distribution was higher in men with 61.26% and women 45.6%. The anatomical site more frequently affected were the cervical lymph nodes with 25.6%. Most of them expressed B antigens, 86.8%, and T, 1.8%. The most frequent subtype was diffuse large B cell in 29.6%. Conclusions: Most of the NHL from the Bucaramanga metropolitan area are nodal, of B lineage, and diffuse large cell subtype. The limited use of other techniques for the classification of these neoplasms in our region was evident. Salud UIS 2011; 43(1): 39-47.

García Ramírez, Carlos Alberto; Uribe Pérez, Claudia Janeth; Niño Vargas, Paula Marina; Salazar Radi, Daniel Sebastián; Vásquez Pinto, Luis Enrique

2011-04-01

259

Percutaneous intravascular metallic stent placement in chronic iliac artery stenoses  

International Nuclear Information System (INIS)

[en] To determine the long-term patency of percutaneous intravascular metallic stent placement in patients with chronic iliac artery stenosis. Intravascular metallic stents were placed percutaneously in 41 limbs of 38 patients with chronic iliac artery stenosis who presented with intermittent claudication in 40 limbs and gangrene in the other. Preoperative angiography showed that complete occlusion occurred in one limb, and luminal stenosis of over 50% in 34 and of less than 50% in six. The mean length of stenoses was 3.1 (range, 1-8) cm, and in all cases the systolic pressure gradient was over 10 (range, 12-100, mean, 43) mmHg. Stent placement was indicated by failed balloon angioplasty in 35 limbs, primary stenting in five, and restenosis after balloon angioplasty in one. Technical and clinical success were evaluated in terms of immediate results and stent patency over a period of 1-49 (mean, 19) months (Kaplan-Meier method). Stent placement was successful in all cases in which residual stenosis was less than 10% and systolic pressure gradient less than 2 mmHg. One to three days after the procedure, clinical symptoms had improved in 40 limbs and ABI (n=23) had increased from 0.64±0.20 to 0.92±0.17. Follow-up studies demonstrated patency rates of 94.1% at 6 months, 90.7% at 1 year, 86.6% at 2 years, and 86.6% at 4 years. Our results showed that in patients with chronic iliac artery stenosis, percutaneous intravascular metallic stent placement led to patency rates which were similar over a period of between six months and four years

2001-01-01

260

Percutaneous intravascular metallic stent placement in chronic iliac artery stenoses  

Energy Technology Data Exchange (ETDEWEB)

To determine the long-term patency of percutaneous intravascular metallic stent placement in patients with chronic iliac artery stenosis. Intravascular metallic stents were placed percutaneously in 41 limbs of 38 patients with chronic iliac artery stenosis who presented with intermittent claudication in 40 limbs and gangrene in the other. Preoperative angiography showed that complete occlusion occurred in one limb, and luminal stenosis of over 50% in 34 and of less than 50% in six. The mean length of stenoses was 3.1 (range, 1-8) cm, and in all cases the systolic pressure gradient was over 10 (range, 12-100, mean, 43) mmHg. Stent placement was indicated by failed balloon angioplasty in 35 limbs, primary stenting in five, and restenosis after balloon angioplasty in one. Technical and clinical success were evaluated in terms of immediate results and stent patency over a period of 1-49 (mean, 19) months (Kaplan-Meier method). Stent placement was successful in all cases in which residual stenosis was less than 10% and systolic pressure gradient less than 2 mmHg. One to three days after the procedure, clinical symptoms had improved in 40 limbs and ABI (n=23) had increased from 0.64{+-}0.20 to 0.92{+-}0.17. Follow-up studies demonstrated patency rates of 94.1% at 6 months, 90.7% at 1 year, 86.6% at 2 years, and 86.6% at 4 years. Our results showed that in patients with chronic iliac artery stenosis, percutaneous intravascular metallic stent placement led to patency rates which were similar over a period of between six months and four years.

Sohn, Min Jee; Sung, Kyu Bo; Shin, Byung Suk; Lim, Soo Mee; Kim, Bong Soo; Song, Ho-Young; Kwon, Tae won; Yoon, Hyun Ki [College of Medicine, Univ. of Ulsan, Seoul (Korea, Republic of)

2001-09-01

 
 
 
 
261

Percutaneous removal of intravascular foreign bodies by a modified loop-snare technique  

Energy Technology Data Exchange (ETDEWEB)

Successful percutaneous removal of embolized intravenous catheters in two patients is described. The long duration of intravascular presence of the foreign bodies necessitated an adaptation of the familiar loop-snare technique. Percutaneous, transluminal retrieval is the method of choice for the removal of intravascular foreign bodies and should be performed in preference to surgical management whenever possible.

Eppen, R.; Pohlenz, O.

1988-05-01

262

Percutaneous removal of intravascular foreign bodies by a modified loop-snare technique  

International Nuclear Information System (INIS)

[en] Successful percutaneous removal of embolized intravenous catheters in two patients is described. The long duration of intravascular presence of the foreign bodies necessitated an adaptation of the familiar loop-snare technique. Percutaneous, transluminal retrieval is the method of choice for the removal of intravascular foreign bodies and should be performed in preference to surgical management whenever possible. (orig.)

1988-01-01

263

Blood flow shapes intravascular pillar geometry in the chick chorioallantoic membrane  

Digital Repository Infrastructure Vision for European Research (DRIVER)

The relative contribution of blood flow to vessel structure remains a fundamental question in biology. To define the influence of intravascular flow fields, we studied tissue islands--here defined as intravascular pillars--in the chick chorioallantoic membrane. Pillars comprised 0.02 to 0.5% of the ...

Lee, Grace S; Filipovic, Nenad; Miele, Lino F; Lin, Miao; Simpson, Dinee C; Giney, Barry; Konerding, Moritz A; Tsuda, Akira

264

Medical device and methods for treating intravascular restenosis  

UK PubMed Central (United Kingdom)

A medical device for treating intravascular restenosis of a patient, the medical device comprising a catheter shaft and an inner catheter, the inner catheter having a deployable wire assembly arrangement, wherein the deployable wire assembly arrangement comprises a plurality of preshaped expandable metallic basket members at the distal end of the inner catheter adapted to contact a pre-implanted stent and to apply RF current to the tissues for therapeutic purposes through a wire guide shaft. Alternately, a plurality of expandable metallic basket members are secured to the distal section of the catheter shaft for contacting a pre-implanted stent of the patient through a wire guide shaft.

TU HOSHENG; TU STEVE CHUN-GUANG

265

Artery phantoms for intravascular optical coherence tomography: diseased arteries.  

UK PubMed Central (United Kingdom)

ABSTRACT. We propose and test various strategies for the creation of artery phantoms mimicking different kinds of diseased arteries when imaged by intravascular optical coherence tomography (IVOCT). We first review the method for making healthy artery phantoms. We then describe the procedure to fabricate diseased artery phantoms with intima thickening, lipid pool, thin-capped fibroatheroma, calcification, and restenosis (homogeneous and layered) after stent apposition. For each case, a phantom is fabricated, an IVOCT image is obtained, and the image is compared to that of a real artery.

Bisaillon CÉ; Lamouche G

2013-09-01

266

Method for Observing Intravascular BongHan Duct  

CERN Multimedia

A method for observing intra blood vessel ducts which are threadlike bundle of tubules which form a part of the BongHan duct system. By injecting 10% dextrose solution at a vena femoralis one makes the intravascular BongHan duct thicker and stronger to be easily detectable after incision of vessels. The duct is semi-transparent, soft and elastic, and composed of smaller tubules whose diameters are of 10$\\mu$m order, which is in agreement with BongHan theory.

Jiang, X; Shin, H; Lee, B; Choi, C; Soh, K; Cheun, B; Baik, K; Soh, K; Jiang, Xiaowen; Kim, Hee-kyeong; Shin, Hak-soo; Lee, Byong-chon; Choi, Chunho; Soh, Kyung-soon; Cheun, Byeung-soo; Baik, Ku-youn; Soh, Kwang-sup

2002-01-01

267

[The disseminated intravascular coagulation syndrome. Physiopathological and clinical aspects  

UK PubMed Central (United Kingdom)

On the basis of the data expressed in the world medical literature the Authors examine the syndrome of disseminated intravascular coagulation, discussing the etiopathogenetic motives, the most significant physiopathologic aspects and the diagnostic-differential and therapeutic problems. They conclude pointing out the necessity of including the eventuality of D.I.C. among the diagnostic possibilities, in as much as the early identification of the syndrome and an adequate therapeutic treatment, employed at the right time, can consent, in not few cases, to save the patient's life.

Dagnino A; Nurra P

1980-10-01

268

Silent intravascular lymphoma initially manifesting as a unilateral adrenal incidentaloma.  

Science.gov (United States)

Intravascular large B-cell lymphoma (IVLBCL) is a rare subtype of malignant lymphoma. Although the involvement of adrenal glands in IVLBCL is often observed, primary adrenal IVLBCL is rare. Most reported cases of adrenal IVLBCL showed bilateral lesions resulting in rapidly progressive adrenal failure and poor prognosis. Here, we report a case of slowly progressive primary adrenal IVLBCL manifesting initially with unilateral adrenal incidentaloma. This case is a silent IVLBCL and shows that the enlargement of both adrenal glands can be followed. PMID:22927863

Takahashi, Yoshiko; Iida, Keiji; Hino, Yasuhisa; Ohara, Takeshi; Kurahashi, Toshifumi; Tashiro, Takashi; Chihara, Kazuo

2012-08-13

269

Carbon dioxide as an intravascular imaging agent: review.  

Science.gov (United States)

Patients with renal impairment and/or contrast allergies pose a challenge with regard to diagnostic evaluations. CO(2) may serve as a suitable alternative intravascular contrast agent in these patients with arteriographic applications, including evaluation of peripheral vascular disease, and venographic applications, such as transjugular intrahepatic portosystemic shunt procedure, to name a few. Unique properties of CO(2), such as low viscosity, lack of an allergic reaction, and renal toxicity, have afforded it its diagnostic capabilities. However, certain properties of CO(2) also pose a technical challenge in terms of its delivery. Although it remains a relatively safe alternative contrast agent, potential adverse effects have been reported and exist. PMID:21787987

Patel, Bhavik N; Kapoor, Baljendra S; Borghei, Peyman; Shah, Nemil A; Lockhart, Mark E

270

Carbon dioxide as an intravascular imaging agent: review.  

UK PubMed Central (United Kingdom)

Patients with renal impairment and/or contrast allergies pose a challenge with regard to diagnostic evaluations. CO(2) may serve as a suitable alternative intravascular contrast agent in these patients with arteriographic applications, including evaluation of peripheral vascular disease, and venographic applications, such as transjugular intrahepatic portosystemic shunt procedure, to name a few. Unique properties of CO(2), such as low viscosity, lack of an allergic reaction, and renal toxicity, have afforded it its diagnostic capabilities. However, certain properties of CO(2) also pose a technical challenge in terms of its delivery. Although it remains a relatively safe alternative contrast agent, potential adverse effects have been reported and exist.

Patel BN; Kapoor BS; Borghei P; Shah NA; Lockhart ME

2011-09-01

271

Cinco breves tratados religiosos alcobacenses: edição semidiplomática (cód. alc. 461)  

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Full Text Available Resumo: No presente trabalho, apresenta-se edição semidiplomática de cinco breves tratados religiosos - inéditos - presentes no cód. ALC 461 da Biblioteca Nacional de Lisboa. Com esta edição, pretende-se apresentar contribuição para o conhecimento da literatura religiosa medieval em português e da língua portuguesa na sua fase arcaica.Palavras-chave: Crítica textual; edição; Idade Média; literatura portuguesa; religião.Résumé: Le but de ce travail est présenter une édition semidiplomatique de cinque brefs traités religieux - inédits - présents dans le codex ALC 461 de la Bibliothèque Nationale de Lisbonne. Avec cette édition, on présente une contribution pour la connaissance de la littérature religieuse médiévale portugaise et du ancien portugais.Mots-clés: Critique textuelle; édition; Moyen Âge; littérature portugaise; religion.Keywords: Textual criticism; edition; Middle Ages; Portuguese literature; religion.

César Nardelli Cambraia; Cláudio Manoel Figueiredo de Oliveira; Júlia Selani Rodrigues Silva; Maria Célia Romes de Lima; Maria Tereza Ramos Bittencourt

2001-01-01

272

Forma tumoral encefálica esquistossomótica: apresentação de um caso tratado cirurgicamente  

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Full Text Available Os relatos da esquistossomose mansônica acometendo o sistema nervoso central (SNC) são pouco frequentes, sendo raramente descrito no encéfalo, onde os ovos do Schistosoma mansoni usualmente provocam reação granulomatosa comportando-se como lesão expansiva. Um paciente do sexo masculino, procedente de São Vicente de Ferrer, Baixada Ocidental Maranhense, área endêmica da doença, 27 anos de idade, apresentou tumor no cerebelo, o qual foi tratado cirurgicamente. O estudo histopatológico da lesão cerebelar, demonstrou extensa reação granulomatosa ao redor de ovos em desintegração de Schistosoma mansoni. Os granulomas exibiam diferentes estágios de evolução, desde necrótico exsudativo até produtivo. Este caso representa o primeiro de neuroesquistossomose relatado no estado do Maranhão. A evolução pós-operatória do paciente caracterizou-se por déficit e incoordenação motora dos membros superior e inferior direito associado a tremores.

Ferreira Luiz A.; Lima Francisco Lucio C.; Anjos Maria do Rosário O. dos; Costa Jackson M. L.

1998-01-01

273

Alterações vasculares na coróide de ratos diabéticos tratados e não tratados/ Choroidal vessels alterations in treated and untreated diabetic rats  

Scientific Electronic Library Online (English)

Full Text Available Abstract in portuguese OBJETIVO: Conhecer os efeitos do diabetes e o impacto de seu tratamento medicamentoso em curto e longo prazo sobre os vasos da coróide e membrana de Bruch. MÉTODOS: Foram estudados 30 ratos Wistar, divididos em 3 grupos experimentais: grupo controle (GC), grupo diabético (GD) e grupo diabético tratado (GT), estudados 1 mês (momento M1) e 12 meses (momento M2) após o início do experimento. O diabetes foi induzido por aloxana endovenosa, na dose de 42 mg/kg. O GT foi (more) tratado com hipoglicemiante oral (acarbose) e insulina subcutânea. Após o sacrifício, os olhos foram preparados para exame ao microscópio eletrônico de transmissão, interessando a ultra-estrutura da membrana de Bruch e os vasos da coróide. RESULTADOS: O exame ultra-estrutural da coróide dos ratos diabéticos mostrou depósitos na membrana de Bruch, acúmulo de vesículas, glicogênio e corpos densos no citoplasma das células endoteliais. O grupo mais afetado foi de ratos diabéticos de 12 meses (GDM2). Os animais com menor intensidade de alterações foram os ratos tratados por 12 meses (GTM2). CONCLUSÃO: Os ratos diabéticos desenvolveram alterações degenerativas na membrana de Bruch e vasos da coróide. Estas alterações foram mais evidentes nos animais submetidos à doença crônica, mas também ocorreram agudamente. O tratamento a curto prazo não foi capaz de evitar os processos degenerativos. A longo prazo, o tratamento inibiu a progressão destes processos. Abstract in english PURPOSE: To evaluate the diabetic alterations and the impact of short and long-term medical treatment on them. METHODS: Thirty Wistar rats were divided into 3 groups: control (GC), diabetic (DG), and treated diabetic (TG) and the observations were made 1 month (M1) and 12 months (M2) after diabetes induction. Diabetes was induced by intravenous alloxan (42 mg/kg). The treated group received acarbose orally and insulin by subcutaneous injection. Eyes were prepared for tran (more) smission electron microscopy, specifically for ultrastructure of the Bruch membrane and choroidal vessels. RESULTS: Ultrastructural examination of the diabetic rat coroid showed deposits in the Bruch membrane and accumulation of vesicles, glycogen and dense bodies in endothelial cell cytoplasm. The most affected group was that of the diabetics on month 12 (GDM2). The treated diabetics showed the least alterations on month 12 (GTM2). CONCLUSION: Diabetic rats develop degenerative alterations in the Bruch membrane and choroidal vessels. These alterations are more evident in animals submitted to chronic disease, but they are also present in acute disease. Degenerative processes were not avoided with short-term treatment. Long-term treatment inhibited the progress of these processes.

Rodrigues, Antonio Carlos Lottelli; Schellini, Silvana Artioli; Spadela, César Tadeu; Gregório, Elisa Aparecida; Padovani, Carlos Roberto

2007-06-01

274

[Evaluation of several parameters of coagulation in liver cirrhosis: disseminated intravascular coagulation or pseudo-disseminated intravascular coagulation?  

UK PubMed Central (United Kingdom)

Reports in the literature on the difficulty of differential diagnosis between Disseminated Intravascular Coagulation (DIC) Pseudo-DIC and Primary Fibrinolysis (PF) in patients with liver disease, stimulated a study of various coagulation parameters (PT, PTT, Platelets, Fibrinogen, FDP) in 28 cirrhotic patients. The study confirmed reports in the literature on the high incidence of circulating FDP among liver disease patients. The vital role these play in maintaining alterations in haemostasis means that cirrhosis cases must be approached with extreme caution, avoiding any therapeutic or instrumental procedure liable to worsen the already disturbed coagulation pattern in such patients.

Petrella V; Parachini F; Rigotti T; Galimberti M; Cusumano S

1988-03-01

275

Evaluación de actividad de linfoma con F18-fluordeoxiglucosa (FDG): interferencia por presencia de grasa parda.  

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Full Text Available Se presenta un caso de paciente de 41 años con antecedente de linfoma de Hodgkin rico en linfocitos T etapa III(s)B diagnosticado hace 19 meses con compromiso supra e infradiafragmático inicial; tratada con quimioterapia estándar (QT) hasta hace 10 meses. En la tomografía computada de control de terapia presentó pequeñas adenopatías en cadenas cervicales anteriores, así como en axila izquierda, la mayor de 18 mm; múltiples conglomerados mediastínicos el mayor de 4,2 x 1,1 cm, de menor tamaño que en estudio previo; lesión quística paravertebral derecha de 2,4 cm; esplenomegalia de 14 cm. Se efectuó PET con 18F-FDG para control de tratamiento (Figura 1a), observándose múltiples focos de moderado hipermetabolismo en ambas regiones cervicales, el mayor a nivel inferior derecho de 2,7 cm con índice de captación SUV de 5,3 y al menos cuatro focos de mayor captación del FDG en mediastino e hilio pulmonar derechos de hasta 2,4 cm con SUV de 4,4 y en mediastino anterosuperior izquierdo con SUVmáx de 3,2.

Jofré, M. Josefina.; Sierralta, M. Paulina.; Canessa, José.; Massardo, Teresa.

2011-01-01

276

Linfoma subcutâneo de células T paniculite-símile Subcutaneous panniculitis-like T-cell lymphoma  

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Full Text Available Linfoma subcutâneo de células T paniculite-símile foi recentemente reconhecido como entidade clínico-patológica. Paciente do sexo feminino, 17 anos, relatou nodosidades eritêmato-violáceas e depressões nos membros e abdome há três anos e discreta perda ponderal, sem outros sintomas gerais. Adenomegalia, visceromegalias e infiltração da medula óssea estavam ausentes, e a histopatologia da pele mostrou densa infiltração de linfócitos atípicos CD3/CD8 no subcutâneo. A quimioterapia interrompeu o surgimento de novas lesões com remissão das pré-existentes no seguimento de oito meses. Aspectos imunofenotípicos e moleculares são relevantes para elucidação diagnóstica e avaliação do prognóstico.Subcutaneous panniculitis-like T-cell lymphoma is extremely rare and has recently been recognized as a clinicopathological entity. Young female, 17 years old, has complained of subcutaneous nodules and plaques in the limbs and abdomen for three years, accompanied of mild weight loss without other constitutional symptoms. Nodal, visceral and bone marrow involvement was absent, and subcutaneous CD3/CD8 atypical lymphocyte infiltration was observed in the skin sample. Chemotherapy interrupted the onset of new lesions and led to remission in the 8-month follow-up. Immunophenotypic and molecular aspects were relevant to the diagnosis and as prognosis makers.

Renato Soriani Paschoal; Renata Nahas Cardilli; Darlene Arruda; Belinda Pinto Simões; Cacilda da Silva Souza

2009-01-01

277

Linfoma subcutâneo de células T paniculite-símile/ Subcutaneous panniculitis-like T-cell lymphoma  

Scientific Electronic Library Online (English)

Full Text Available Abstract in portuguese Linfoma subcutâneo de células T paniculite-símile foi recentemente reconhecido como entidade clínico-patológica. Paciente do sexo feminino, 17 anos, relatou nodosidades eritêmato-violáceas e depressões nos membros e abdome há três anos e discreta perda ponderal, sem outros sintomas gerais. Adenomegalia, visceromegalias e infiltração da medula óssea estavam ausentes, e a histopatologia da pele mostrou densa infiltração de linfócitos atípicos CD3/CD8 no sub (more) cutâneo. A quimioterapia interrompeu o surgimento de novas lesões com remissão das pré-existentes no seguimento de oito meses. Aspectos imunofenotípicos e moleculares são relevantes para elucidação diagnóstica e avaliação do prognóstico. Abstract in english Subcutaneous panniculitis-like T-cell lymphoma is extremely rare and has recently been recognized as a clinicopathological entity. Young female, 17 years old, has complained of subcutaneous nodules and plaques in the limbs and abdomen for three years, accompanied of mild weight loss without other constitutional symptoms. Nodal, visceral and bone marrow involvement was absent, and subcutaneous CD3/CD8 atypical lymphocyte infiltration was observed in the skin sample. Chemot (more) herapy interrupted the onset of new lesions and led to remission in the 8-month follow-up. Immunophenotypic and molecular aspects were relevant to the diagnosis and as prognosis makers.

Paschoal, Renato Soriani; Cardilli, Renata Nahas; Arruda, Darlene; Simões, Belinda Pinto; Souza, Cacilda da Silva

2009-08-01

278

Leucemia linfóide crônica e linfoma linfocítico de pequenas células/ Chronic lymphocytic leukemia and small lymphocytic lymphoma  

Scientific Electronic Library Online (English)

Full Text Available Abstract in portuguese O linfoma linfocítico de pequenas células (LLPC) é considerado uma variante tumoral da leucemia linfocítica crônica e, por conseguinte, a mesma doença. Existem similaridades clínicas, morfológicas, imunofenotípicas e genéticas que parecem resistir até mesmo a uma análise mais aprofundada com o instrumental técnico atualmente disponível para o estudo da biologia molecular. Talvez o refinamento das técnicas de análise da expressão de multiplos genes, inclui (more) ndo genes para microRNAs, tanto das células malignas quanto das remanescentes benignas do microambiente, e os avanços no conhecimento de determinantes da diferenciação celular possam, em um futuro próximo, esclarecer afinal se LLPC e LLC são doenças diferentes. Abstract in english Small lymphocytic lymphoma (SLL) and chronic lymphocytic leukemia (CLL) are thought to be different expressions of the same disease. There are clinical, morphological, immuno-phenotypical and genotypical similarities that seem to resist even to advanced molecular biology techniques. It still needs to be defined, through a more refined understanding of the gene profile expression and microRNA biology of the malignant and surrounding micro-environment benign cells and a bet (more) ter understanding of the new paradigms of cell differentiation relativity, if SLL and CLL are different diseases.

Silla, Lucia M. R.

2005-12-01

279

Linfoma primario del sistema nervioso central en una paciente con lupus eritematoso sistémico  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Se presenta una paciente de 36 años con diagnóstico de lupus eritematoso sistémico tratada con prednisona y ciclofosfamida que se internó por cefalea, hemiparesia y hemianestesia braquiocrural derecha de dos semanas de evolución. Se realizó una tomografía computada y una resonancia magnética nuclear de cerebro que mostraron una lesión nodular frontal izquierda. Se efectuó una biopsia a cielo abierto de la lesión cerebral cuyo diagnóstico histopatológico fue l (more) infoma B de celulas grandes, difuso. Se inició radioterapia, no completó el tratamiento por complicaciones y falleció. Son muy pocos los casos publicados de linfoma primario del sistema nervioso central asociado a lupus eritematoso sistémico. Abstract in english A 36 year-old woman with systemic lupus erythematosus was admitted to our hospital with headache, brachiocrural hemiparesis and hemianesthesia. She had been treated with prednisone and cyclophosphamide. CT scan and MRI revealed a 15 mm nodular mass enhanced with gadolinium in left frontal convexity. CNS biopsy was performed and a diffuse large B-cell lymphoma was diagnosed. She was treated with radiation therapy without response and died. There are few reports of erythematosus systemic lupus associated with primary central nervous system lymphoma.

Pisoni, C. N.; Grinberg, A. R.; Plana, J. L.; Freue, R. D.; Manni, J. A.; Paz, L.

2003-06-01

280

Linfoma no Hodgkin tipo anaplásico de localización cutánea: Presentación de 1 caso  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Se describió un caso de linfoma maligno no Hodgkin tipo anaplásico (LMnH), de localización principal en la piel de la región torácica posterior de un paciente de 56 años de edad, masculino, raza negra, proveniente de la provincia de Manica, Mozambique. El cuadro lesional y topográfico hizo pensar en otros tipos de tumores o micosis profundas. Se corroboró el diagnóstico de LMnH tipo anaplásico de grandes células, CD 30+, por la histología, inmunocitoquímica y (more) la inmunohistoquímica. Se inició el tratamiento con poliquimioterapia, CHOP (ciclofosfamida, doxorrubicina, vincristina y prednisona), 6 ciclos con intervalos de 3 semanas entre ellos. Se logró evolución satisfactoria, la totalidad de las lesiones dermatológicas involucionaron. Actualmente, se encuentra en observación. Abstract in english The case of a 56-year-old black male patient from the province of Manica, Mozambique, that presented an anaplastic malignant non-Hodgkin?s lymphoma mainly located in the skin of the posterior thoracic region, was described. The lesion and topographic picture made us think about other types of tumors or deep mycosis. The diagnosis of CD 30+ anaplastic malignant large-cell non-Hodgkin?s lymphoma was corroborated by histology, immunocytochemistry and immunohistochemistry. (more) The treatment was initiated with combination chemotherapy, CHOP (cyclophosphamide, doxorubicin, vincristine and prednisone), 6 cycles at intervals of 3 weeks among them. A satisfactory evolution was attained. It was observed an involution of all the skin lesions. At present, this patient is under observation.

Castillo Menéndez, María Dolores; Díaz de Villegas Álvarez, Eunice; Vigueras Fajardo, Magdalena; Sabatés Martínez, Manuel

2003-03-01

 
 
 
 
281

Linfoma no Hodgkin tipo anaplásico de localización cutánea: Presentación de 1 caso  

Directory of Open Access Journals (Sweden)

Full Text Available Se describió un caso de linfoma maligno no Hodgkin tipo anaplásico (LMnH), de localización principal en la piel de la región torácica posterior de un paciente de 56 años de edad, masculino, raza negra, proveniente de la provincia de Manica, Mozambique. El cuadro lesional y topográfico hizo pensar en otros tipos de tumores o micosis profundas. Se corroboró el diagnóstico de LMnH tipo anaplásico de grandes células, CD 30+, por la histología, inmunocitoquímica y la inmunohistoquímica. Se inició el tratamiento con poliquimioterapia, CHOP (ciclofosfamida, doxorrubicina, vincristina y prednisona), 6 ciclos con intervalos de 3 semanas entre ellos. Se logró evolución satisfactoria, la totalidad de las lesiones dermatológicas involucionaron. Actualmente, se encuentra en observación.The case of a 56-year-old black male patient from the province of Manica, Mozambique, that presented an anaplastic malignant non-Hodgkin’s lymphoma mainly located in the skin of the posterior thoracic region, was described. The lesion and topographic picture made us think about other types of tumors or deep mycosis. The diagnosis of CD 30+ anaplastic malignant large-cell non-Hodgkin’s lymphoma was corroborated by histology, immunocytochemistry and immunohistochemistry. The treatment was initiated with combination chemotherapy, CHOP (cyclophosphamide, doxorubicin, vincristine and prednisone), 6 cycles at intervals of 3 weeks among them. A satisfactory evolution was attained. It was observed an involution of all the skin lesions. At present, this patient is under observation.

María Dolores Castillo Menéndez; Eunice Díaz de Villegas Álvarez; Magdalena Vigueras Fajardo; Manuel Sabatés Martínez

2003-01-01

282

Diagnóstico de linfoma cerebral primario por el oftalmólogo Primary cerebral lymphoma diagnosed by the ophthalmologist  

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Full Text Available Caso clínico: Paciente varón de 20 años, VIH positivo, con miodesopsias en ambos ojos de 2 semanas de evolución. El examen fundoscópico reveló edema de papila bilateral con hemorragias peripapilares en llama. El estudio de neuroimagen mostró la presencia de una masa cerebral en el lóbulo parietal izquierdo. La biopsia confirmó el diagnóstico de neoplasia de estirpe linfoide. Discusión: El linfoma primario es la neoplasia más frecuente del sistema nervioso central (SNC) en pacientes con sida (síndrome de inmudeficiencia adquirida) aunque la terapia antirretroviral de gran actividad ha disminuido su incidencia. Destacamos el papel del oftalmólogo en el diagnóstico de neoplasias del SNC.Case report: A 20-year-old male, HIV positive, with myodesopsias (floaters) in both eyes for two weeks. Fundus examination revealed bilateral papillary oedema with peripapilar flame-shaped haemorrhages. The neuroimaging tests showed a cerebral mass in the left parietal lobe. The biopsy confirmed the diagnosis of lymphoid neoplasm. Discussion: Primary lymphoma is the most common malignancy of the central nervous system (CNS) in AIDS patients, although highly active antiretroviral therapy has reduced its incidence. The ophthalmologist plays an essential role in the diagnosis of CNS neoplasm.

M. Castro-Rebollo; E.N. Vleming; P. Drake-Rodríguez; J. Benítez-Herreros; C. Pérez-Rico

2010-01-01

283

Development of 192Ir radiation sources for intravascular irradiation  

International Nuclear Information System (INIS)

Intravascular brachytherapy is a novel therapy for preventing the restenosis of coronary artery by use of low-dose irradiation. JAERI and Kyoto University have been developing 192Ir radiation sources by the cooperative research project entitled as 'The research on safety and effectiveness of the intravascular brachytherapy for preventing restenosis of the coronary artery disease' since 1998. The radiation source was introduced into the stenosis through a catheter (a guide-tube to insert directly into vascular) to irradiate the diseased part. Ten 192Ir seed sources (?0.4 mm x 2.5 mm) were positioned between nylon spacers (?0.3 mm x 1.0 mm) in a flexible covering tube and the tube was plugged with a core-wire; the tube was shrunk to fix the inside materials and the size is 0.46 mm in diameter and 3 m in length. The physically optimal design was determined to insert the radiation source easily into vascular and to get the dose uniformity in the diseased part. The production method of the radiation source, which is practical to use in the clinics was also established. (author)

2003-01-01

284

Late adverse reactions to intravascular iodinated contrast media  

International Nuclear Information System (INIS)

Late adverse reactions to intravascular iodinated contrast media are defined as reactions occurring 1 h to 1 week after contrast medium injection. They have received increasing interest over the past decade, but their prevalence remains uncertain and their pathophysiology is not fully understood. The Contrast Media Safety Committee of the European Society of Urogenital Radiology decided to review the literature and to issue guidelines. An extensive literature search was carried out and summarized in a report. Based on the available information, simple guidelines have been drawn up. The report and guidelines were discussed at the 8th European Symposium on Urogenital Radiology in Genoa. Late adverse reactions after intravascular iodinated contrast medium include symptoms such as nausea, vomiting, headache, itching, skin rash, musculoskeletal pain, and fever. A significant proportion of these reactions is unrelated to the contrast medium; however, allergy-like skin reactions are well-documented side effects of contrast media with an incidence of approximately 2%. Late reactions appear to be commoner after non-ionic dimers. The majority of late skin reactions after contrast medium exposure are probably T-cell-mediated allergic reactions. Patients at increased risk of late skin reactions are those with a history of previous contrast medium reaction and those on interleukin-2 treatment. Most skin reactions are self-limiting and resolve within a week. Management is symptomatic and similar to the management of other drug-induced skin reactions. (orig.)

2003-01-01

285

Retinal and choroidal intravascular spectral-domain optical coherence tomography.  

Science.gov (United States)

Purpose:? To examine retinal and choroidal blood vessels using spectral-domain optical coherence tomography (SD-OCT). Methods:? Retrospective case series. Results:? Scans through retinal blood vessels in healthy subjects demonstrated vessel wall reflexes and a tri-layer profile of the blood column on longitudinal scans and a figure-of-eight configuration on cross-sectional scans. Intravascular reflectivity decreased with increasingly oblique angles of observation and was absent when blood flow was parallel to the line of sight. The high blood flow in the choroidal vessels in healthy subjects and the low flow in the retinal vessels in patients with ocular ischaemic syndrome and central retinal artery occlusion were both associated with lower reflectivity of the blood and an unstructured intravascular SD-OCT profile. Discussion:? This qualitative in vivo study found a characteristically structured SD-OCT profile of the blood column in retinal vessels with normal blood flow. Both structure and total reflectivity faded when blood flow was lower or higher than normal or at oblique angles to the line of sight. In conclusion, SD-OCT scans of the vessels in the posterior pole of the eye may assist the clinical assessment of gross abnormalities of ocular blood flow, e.g. in carotid artery stenosis. PMID:23552098

Willerslev, Anne; Li, Xiao Q; Cordtz, Peter; Munch, Inger C; Larsen, Michael

2013-04-01

286

Linfoma no Hodgkin de células T: una nueva visión/ T-cells non Hodgkin?s lymphoma: a new vision  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Los linfomas no Hodgkin de células T, son enfermedades malignas poco comunes. La clasificación actual WHO/EORTC, reconoce 10 entidades clínico patológicas diferentes, estas entidades tiene una única característica y requieren individualizar el diagnóstico y el tratamiento de los mismos. En años recientes se han hecho grandes progresos en el conocimiento de la patogenia de estas enfermedades. La traslocación cromosomal especifica, y las infecciones virales son aso (more) ciadas actualmente a ciertos linfomas. En esta revisión se describen la presentación clínico patológica, y además se discuten los estudios moleculares en diagnóstico de de los linfomas de células T, debido a la rareza de estas entidades y la escasez de investigaciones a gran escala acerca de las mismas su tratamiento aun es un reto, basado en bases anecdóticas, requiriéndose aun estudios mas extensos acerca de las bases biológicas de estas enfermedades para poder obtener terapias mas satisfactorias. Abstract in english T-cell non-Hodgkin?s lymphomas (NHLs) are uncommon malignancies. The current classification WHO/EORTC recognizes 10 different clinic pathologic entities. These disorders have unique characteristics and require individualized diagnostic and therapeutic strategies. Tremendous progress has been made in recent years in the understanding of the pathogenesis of these disorders. Specific chromosomal translocations and viral infections are now known to be associated with certain (more) lymphomas. In this review, we describe their clinical and pathologic features. We also discuss the use of molecular studies in the diagnostic work-up of T-cell lymphomas. Because of the rarity of these disorders and the lack of well-designed clinical trials, the treatment of peripheral T-cell NHLs is often challenging. Additional studies are required to learn more about the biology of these diseases, which may lead to more optimal and possibly targeted therapies.

Arredondo Bruce, Alfredo; Amores Carraté, Jacqueline

2009-06-01

287

Linfoma No Hodgkin, manifestaciones oftalmológicas: Presentación de 1 caso/ Non-Hodgkin's lymphoma, ophthalmological manifestations: A case report  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Se presenta un paciente con Linfoma no Hodgkin linfocítico estadio IV y Retinosis Pigmentaria de base diagnosticado en el Centro de Referencia Nacional de Retinosis Pigmentaria, con manifestaciones oftalmológicas de esta neoplasia, remitido, además, al Instituto Nacional de Oncología y Radiobiología. Se ilustra con imágenes estas lesiones infrecuentes. Abstract in english A patient with lymphocytic stage IV non-Hodgkin's lymphoma and base Retinitis Pigmentosa diagnosed at the National Reference Center of Retinitis Pigmentosa is presented. The patient, who showed ophthalmological manifestations of this neoplasia was also referred to the National Institute of Oncology and Radiobiology. These uncommon injuries are illustrated with images.

Ramírez Castro, Tomás; Lorenzo González, María E.

2003-12-01

288

Linfoma não-Hodgkin em tireóide: relato de caso/ Non-Hodgkin's lymphoma in the thyroid: case report  

Scientific Electronic Library Online (English)

Full Text Available Abstract in portuguese Os autores relatam o caso de uma paciente do sexo feminino, 33 anos de idade, branca, sem evidência clínico-laboratorial de tireoidite ou hipotireoidismo clínico, que apresentou uma massa cervical de crescimento rápido. Através de exames histopatológico e imuno-histoquímico, foi realizado o diagnóstico de linfoma não-Hodgkin folicular em tireóide. Abstract in english The authors describe the case of a 33 year-old white female, without any clinical or laboratorial evidence of thyroiditis or clinical hypothyroidism, who presented with a rapidly enlarging anterior neck mass. Diagnosis of a follicular non-Hodgkin's lymphoma was made through histopathological and immunohistochemical analysis.

Azambuja, Evandro de; Azevedo, Sérgio Jobim de; Moreira, Roger; Castro, Rodrigo C. Leite de

2004-06-01

289

Linfoma não-Hodgkin em tireóide: relato de caso Non-Hodgkin's lymphoma in the thyroid: case report  

Directory of Open Access Journals (Sweden)

Full Text Available Os autores relatam o caso de uma paciente do sexo feminino, 33 anos de idade, branca, sem evidência clínico-laboratorial de tireoidite ou hipotireoidismo clínico, que apresentou uma massa cervical de crescimento rápido. Através de exames histopatológico e imuno-histoquímico, foi realizado o diagnóstico de linfoma não-Hodgkin folicular em tireóide.The authors describe the case of a 33 year-old white female, without any clinical or laboratorial evidence of thyroiditis or clinical hypothyroidism, who presented with a rapidly enlarging anterior neck mass. Diagnosis of a follicular non-Hodgkin's lymphoma was made through histopathological and immunohistochemical analysis.

Evandro de Azambuja; Sérgio Jobim de Azevedo; Roger Moreira; Rodrigo C. Leite de Castro

2004-01-01

290

ENTERAL MEDICAL TREATMENT ASSEMBLY HAVING A SAFEGUARD AGAINST ERRONEOUS CONNECTION WITH AN INTRAVASCULAR TREATMENT SYSTEM  

UK PubMed Central (United Kingdom)

An enteral medical treatment assembly having an enteral supply tube and an enteral access device. The distal end of the enteral supply tube has a matin g obstructer configured to obstruct mating of the enteral supply tube with an intravascular patient access port. The proximal end of the enteral patient access device includes a mating obstructer configured to obstruct mating of the enteral patient access device with a connector of an intravascular suppl y tube. This enteral medical treatment assembly provides a safeguard against erroneous connections between enteral and intravascular treatment systems.

SHAUGHNESSY MICHAEL C; PURNELL SHAWN G

291

Neumonías, reporte de dos casos tratados por homeopatía*  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Las neumonías son entidades que afectan al aparato respiratorio, especialmente al pulmón. Su tratamiento habitual es el uso de antibióticos y en ocasiones en cantidades abusivas. En el presente trabajo se describen dos casos que fueron tratados por homeopatía y en los cuales no fue necesario el uso de los antibióticos. Ambas pacientes habían padecido de bronconeumonía en 3 ocasiones anteriores. A las 2 pacientes se les indicó tratamiento con Phosphoro 6 CH durante (more) 1 mes consecutivo a razón de 5 gotas 3 veces al día, y su respuesta fue favorable al tratamiento, al concluir éste se le dio el medicamento de fondo. Hace 6 meses que padecieron la neumonía y se mantienen asintomáticas. Abstract in english Pneumonias are diseases affecting the respiratory system, specially the lungs. Its habitual treatment consists in the use of antibiotics, which are sometimes excessively used. In this paper we describe 2 cases that are treated by homeopathy with no need of antibiotics. Both patients had suffered from bronchopneumonia 3 times before. They were treated with 5 drops of Phosphorus 6 CH 3 times a day during a month and the response was favorable. On concluding the treatment, they continued taking drugs. These subjects suffered from pneumonia 6 months ago and they are still asymptomatic.

Campistrous Lavaut, Jorge Luis; Riverón Garrote, Mayra; Pérez Nip, Raquel

1997-06-01

292

El Tratado De Dilectione Dei de Balduino de Ford  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Figura relevante de la Orden del Císter, Balduino de Ford es un autor que se distingue por la originalidad de su espiritualidad. Su tratado De dilectione Dei es una meditación sobre el Primer Mandamiento, que nos invita a amar a Dios "con todo el corazón en sus beneficios, con toda el alma en sus promesas, con todas las fuerzas en sus juicios y con toda la mente en sus preceptos". Su reflexión, nutrida de la Biblia y expresada en un lenguaje marcado por la retórica l (more) atina, insiste en que el amor perfecto exige del creyente amar lo que a Dios le agrada porque a Él le agrada. Termina identificando prácticamente amor con obediencia Abstract in english Famous figure of the cistercian order, Baldwin of Ford is an author who stands out for the originality of his spirituality. His treatise "De dilectione Dei" is a meditation about the First Comandment, which is an invitation to love God "with all the heart in His benefits, with all the soul in His promises, with all the forces in His judgements and with all the mind in His precepts". According to his reflection, fed with the Bible and expressed in a language marked by the (more) latin rhetoric, the perfect love requires to love what is pleasing to God because it pleases Him. Baldwin practically identifies love with obedience

Hallet, Carlos

2004-01-01

293

Tumor desmóide tratado com tamoxifeno: relato de caso  

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Full Text Available O tumor desmóide (TD) é uma neoplasia benigna, que se origina de estruturas fasciais ou músculo-aponeuróticas, constituída por proliferação fibroblástica. Ocorre em 4 a 13% dos pacientes com polipose adenomatosa familiar (FAP). Apesar de histologicamente benignos, os TD têm comportamento maligno, sendo localmente invasivos e com elevada recorrência após ressecção. Os autores relatam um caso de tumor desmóide tratado cirurgicamente no Hospital Governador Israel Pinheiro - IPSEMG e fazem revisão da literatura sobre o tratamento.The desmoid tumors are benign tumors arising from fibroaponeurotic tissue. They occur in 4 to 13% patients who present familial adenomatous polyposis. Although a benign disease, desmoid tumors are focally invasive. They do not metastasize but can be lethal because of aggressive growth with pressure and erosion causing small bowel obstruction. Their tendency to recur (65% to 85%) after removal has encouraged a conservative approach to management. The authors report the case of a patient who presented intra-abdominal desmoid tumor, treated surgically in the Hospital Governador Israel Pinheiro - Belo Horizonte (MG) and discuss the therapeutic options in the literature.

Bruno Juste Werneck Côrtes; Sinara Mônica de Oliveira Leite; Marcos Henrique Rocha Campos; Levindo Alves de Oliveira

2006-01-01

294

estatinas afectan la viabilidad de líneas celulares de leucemia y linfoma humanas in vitro  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Se ha propuesto que las estatinas inducen apoptosis sobre células tumorales. Para probar dicha hipótesis, se analizó el efecto de las estatinas atorvastatina, fluvastatina, lovastatina, mevastatina, pravastatina y simvastatina en el rango de concentraciones de 1 pM hasta 100 ?M, sobre la viabilidad de las líneas celulares humanas Jurkat E6.1, Jurkat D1.1 (Linfoma T) , Daudi (Linfoma B), U937 (leucemia monocítica) y HL-60 (leucemia promielomonocítica) in vitro e (more) n cultivos de 48 horas, analizados por la técnica de hidrolización del compuesto bromuro de 3-(4,5-dimetiltiazol-2-il)-2,5-difenilltetrazolio (MTT). Lovastatina y mevastatina son los más potentes inductores de muerte celular independientemente del tipo celular (Ic 50 entre 12 y 50 ?M). Para las otras estatinas se observan diferencias en el Ic50 según la línea celular atorvastatina (38,1 y 48,6 ?M Jurkats, 55,3 ?M Daudi y 100 ?M para las otras líneas), pravastatina (25 ?M HL-60, 55,6 y 60,7 ?M Jurkats y ? 100 ?M Daudi y U937), simvastatina (25,1 ?M Jurkat D1.1, 50,2 ?M Jurkat E6.1, 45,2 ?M Daudi y 51,3 ?M HL-60, y > 100 ?M U937) y para fluvastatina en todos los casos > 100 ?M. La disminución de la viabilidad celular se revierte completamente cuando las células son incubadas con 10 ?M mevalonato. Se concluye que la lovastatina y mevastatina son las más potentes inductoras de muerte seguida por atorvastatina, pravastatina y simvastatina cuyo efecto depende del tipo de línea celular y la fluvastatina no tiene efectos importantes en la viabilidad de las líneas celulares estudiadas. Abstract in english Statins have been proposed to induce apoptosis of tumor cells. In order to test this hypothesis, the effect of atorvastatin, fluvastatin, lovastatin, mevastatin, pravastatin, simvastatin on cell viability was assessed by in vitro culture for 48 hr, at concentrations ranging from 1 pM to 100 ?M on human cell lines Jurkat E6.1, Jurkat D1.1 (T cell lymphoma), Daudi (B cell lymphoma), U937 (monocitic leukemia) and HL-60 (pro mielomonocitic leukemia) and analyzed the oxid (more) ation of (3-(4.5-Dimethylthiazol-2-yl)-2.5- diphenyltetrazolium bromide (MTT). Lovastatin and mevastatin are the most potent inductors of cell death independently of the cell type (Ic 50 between 12 and 50 ?M). Differences in the Ic50 are observed depending on the cell line: atorvastatina (38.1 and 48.6 ?M Jurkats, 55.3 ?M Daudi y 100 ?M for the others lines), pravastatin (25 ?M HL-60, 55.6 y 60.7 ?M Jurkats and ? 100 ?M Daudi and U937), simvastatin (25.1 ?M Jurkat D1.1, 50.2 ?M Jurkat E6.1, 45.2 ?M Daudi and 51,3 ?M HL-60, and > 100 ?M U937) and for fluvastatin > 100 ?M in all cases. The decrease in cell viability is reverted completely when the cells were incubated with 10 ?M mevalonate. It is concluded that lovastatin and mevastatin are the most potent inductors of cell death followed by atorvastatin, pravastatin and simvastatin whose effect depends upon the cell type and fluvastatin does not have any important effects on cell viability on the cell lines studied.

Guerrero, Mery; Di Giulio, Camilo; De Sanctis, Juan Bautista

2010-06-01

295

estatinas afectan la viabilidad de líneas celulares de leucemia y linfoma humanas in vitro  

Directory of Open Access Journals (Sweden)

Full Text Available Se ha propuesto que las estatinas inducen apoptosis sobre células tumorales. Para probar dicha hipótesis, se analizó el efecto de las estatinas atorvastatina, fluvastatina, lovastatina, mevastatina, pravastatina y simvastatina en el rango de concentraciones de 1 pM hasta 100 ?M, sobre la viabilidad de las líneas celulares humanas Jurkat E6.1, Jurkat D1.1 (Linfoma T) , Daudi (Linfoma B), U937 (leucemia monocítica) y HL-60 (leucemia promielomonocítica) in vitro en cultivos de 48 horas, analizados por la técnica de hidrolización del compuesto bromuro de 3-(4,5-dimetiltiazol-2-il)-2,5-difenilltetrazolio (MTT). Lovastatina y mevastatina son los más potentes inductores de muerte celular independientemente del tipo celular (Ic 50 entre 12 y 50 ?M). Para las otras estatinas se observan diferencias en el Ic50 según la línea celular atorvastatina (38,1 y 48,6 ?M Jurkats, 55,3 ?M Daudi y 100 ?M para las otras líneas), pravastatina (25 ?M HL-60, 55,6 y 60,7 ?M Jurkats y ? 100 ?M Daudi y U937), simvastatina (25,1 ?M Jurkat D1.1, 50,2 ?M Jurkat E6.1, 45,2 ?M Daudi y 51,3 ?M HL-60, y > 100 ?M U937) y para fluvastatina en todos los casos > 100 ?M. La disminución de la viabilidad celular se revierte completamente cuando las células son incubadas con 10 ?M mevalonato. Se concluye que la lovastatina y mevastatina son las más potentes inductoras de muerte seguida por atorvastatina, pravastatina y simvastatina cuyo efecto depende del tipo de línea celular y la fluvastatina no tiene efectos importantes en la viabilidad de las líneas celulares estudiadas.Statins have been proposed to induce apoptosis of tumor cells. In order to test this hypothesis, the effect of atorvastatin, fluvastatin, lovastatin, mevastatin, pravastatin, simvastatin on cell viability was assessed by in vitro culture for 48 hr, at concentrations ranging from 1 pM to 100 ?M on human cell lines Jurkat E6.1, Jurkat D1.1 (T cell lymphoma), Daudi (B cell lymphoma), U937 (monocitic leukemia) and HL-60 (pro mielomonocitic leukemia) and analyzed the oxidation of (3-(4.5-Dimethylthiazol-2-yl)-2.5- diphenyltetrazolium bromide (MTT). Lovastatin and mevastatin are the most potent inductors of cell death independently of the cell type (Ic 50 between 12 and 50 ?M). Differences in the Ic50 are observed depending on the cell line: atorvastatina (38.1 and 48.6 ?M Jurkats, 55.3 ?M Daudi y 100 ?M for the others lines), pravastatin (25 ?M HL-60, 55.6 y 60.7 ?M Jurkats and ? 100 ?M Daudi and U937), simvastatin (25.1 ?M Jurkat D1.1, 50.2 ?M Jurkat E6.1, 45.2 ?M Daudi and 51,3 ?M HL-60, and > 100 ?M U937) and for fluvastatin > 100 ?M in all cases. The decrease in cell viability is reverted completely when the cells were incubated with 10 ?M mevalonate. It is concluded that lovastatin and mevastatin are the most potent inductors of cell death followed by atorvastatin, pravastatin and simvastatin whose effect depends upon the cell type and fluvastatin does not have any important effects on cell viability on the cell lines studied.

Mery Guerrero; Camilo Di Giulio; Juan Bautista De Sanctis

2010-01-01

296

Linfoma MALT de parótida, presentación de un caso clínico y revisión del tema Parotid MALT lymphoma, presentation of a clinical case and review of subject  

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Full Text Available Los linfomas de las glándulas salivales son una entidad poco frecuente, estimándose una incidencia del 5%. La localización más habitual es la glándula parótida, seguida de la submaxilary la sublingual. La mayoría de los linfomas parotídeos son linfomas no Hodgkin (LNH) y se consideran derivados del tejido linfoide asociado a mucosas (MALT). Infrecuentemente se han reportado estos casos y suelen ser subdiagnosticados por su presentación relativamente benigna, comportándose de forma localizada, de lento crecimiento, con varios años de evolución. Presentamos un caso clínico de linfoma tipo MALT de parótida de acuerdo a las características clínicas, histológicas e inmunohistoquímicas de este tumor. Además una revisión de la literatura de este caso.Lymphomas of the salivary glands are a rare entity, with an estimated incidence of 5%. The most frequent location is parotid gland, followed by the submandibular and sublingual. The majority of parotid lymphomas are non-Hodgkin's lymphoma NHL and are considered derived from mucosa-associated lymphoid tissue (MALT). Infrequently these cases have been reported and are often underdiagnosed for their presentation is relatively benign, localized behaving, slow growing, with several years of evolution. We report a case of parotid MALT lymphoma according to the clinical, histological and immunohistochemical characteristics of this tumor. In addition, a literature review of this case.

Francisca Fernández A; Carlos Espinoza N; Víctor Mercado M; Humberto Vallejos A

2012-01-01

297

Linfoma MALT de parótida, presentación de un caso clínico y revisión del tema/ Parotid MALT lymphoma, presentation of a clinical case and review of subject  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Los linfomas de las glándulas salivales son una entidad poco frecuente, estimándose una incidencia del 5%. La localización más habitual es la glándula parótida, seguida de la submaxilary la sublingual. La mayoría de los linfomas parotídeos son linfomas no Hodgkin (LNH) y se consideran derivados del tejido linfoide asociado a mucosas (MALT). Infrecuentemente se han reportado estos casos y suelen ser subdiagnosticados por su presentación relativamente benigna, comp (more) ortándose de forma localizada, de lento crecimiento, con varios años de evolución. Presentamos un caso clínico de linfoma tipo MALT de parótida de acuerdo a las características clínicas, histológicas e inmunohistoquímicas de este tumor. Además una revisión de la literatura de este caso. Abstract in english Lymphomas of the salivary glands are a rare entity, with an estimated incidence of 5%. The most frequent location is parotid gland, followed by the submandibular and sublingual. The majority of parotid lymphomas are non-Hodgkin's lymphoma NHL and are considered derived from mucosa-associated lymphoid tissue (MALT). Infrequently these cases have been reported and are often underdiagnosed for their presentation is relatively benign, localized behaving, slow growing, with se (more) veral years of evolution. We report a case of parotid MALT lymphoma according to the clinical, histological and immunohistochemical characteristics of this tumor. In addition, a literature review of this case.

Fernández A, Francisca; Espinoza N, Carlos; Mercado M, Víctor; Vallejos A, Humberto

2012-04-01

298

Prevention of restenosis with intravascular beta-radiotherapy.  

UK PubMed Central (United Kingdom)

Beta radiation has been clearly shown, in a specific dose range, to be highly effective in the inhibition of the restenotic process after balloon or stent injury in animal experiments, as well as in randomized, placebo-controlled human trials. The major advantage of beta radiation, in comparison with gamma radiation, is a significantly lower radiation exposure to the personnel and patient, and easier adaptability to existing cardiac catheterization laboratories. Rapidly accumulating evidence indicates that the two major problems, late thrombosis and edge stenosis, may be minimized with prolonged antiplatelet therapy (6 months or more) and broader radiation coverage of the intervention site. Although there may be better, safer, and easier options to reduce restenosis in the years to come, intravascular radiotherapy is the first breakthrough modality that has been shown to significantly reduce restenosis after percutaneous vascular interventions.

Kaluza GL; Zymek PT; Raizner AE

2001-03-01

299

Intravascular coagulation associated with the adult respiratory distress syndrome.  

UK PubMed Central (United Kingdom)

In seven of 30 consecutive patients with the adult respiratory distress syndrome, disseminated intravascular coagulation (DIC) developed. Increasing respiratory dysfunction characterized by decreased effective static compliance and increased hypoxemia coincided with the development of DIC. Patients in whom DIC developed were characterized by a high incidence of bleeding, gangrene of the extremities, renal dysfunction, mortality and autopsy evidence of fibrin microthrombi in the lungs, kidney and skin. In 12 of 23 patients who did not meet the criteria for DIC, the platelet count decreased by at least 50 per cent of the initial values at some time during their illness. Fibrin microthrombi were found in the lungs in the majority of the patients subjected to autopsy. These data support the concept that depostion of platelet on damaged pulmonary capillary endothelium may be more common in the adult respiratory distress syndrome than the DIC syndrome.

Bone RC; Francis PB; Pierce AK

1976-11-01

300

[Scoring of disseminated intravascular coagulation (DIC) in intensive care medicine  

UK PubMed Central (United Kingdom)

A close association between disseminated intravascular coagulation (DIC) and increased morbidity and mortality of the critically ill has been uncovered in the ongoing validation of newly developed scoring systems of DIC. DIC scoring aims at quantifying and standardizing pathological activation of coagulation in these patients. Because of the high predictive power of DIC scoring for morbidity and mortality, early identification of DIC may play an important role in the management of critical illness by widening of the therapeutic window before development of irreversible organ failure. Therapeutic intervention in DIC is not well studied. Promising data on targeted modification of DIC by administration of antithrombin has been reported in the past, however, randomized controlled trials on the use of antithrombin for the treatment of DIC are still few. Early detection of DIC by application of novel scores could play a particular role in future DIC trials by defining patient populations most likely to benefit from targeted intervention in their clotting disturbance of critical illness.

Wiedermann CJ; Egi M

2008-07-01

 
 
 
 
301

Acute renal failure and intravascular hemolysis following henna ingestion.  

UK PubMed Central (United Kingdom)

The powder of henna plant (Lawsonia inermis Linn.) is extensively used as a decorative skin paint for nail coloring and as a hair dye. Most reports of henna toxicity have been attributed to adding a synthetic dye para-phenylenediamine (PPD). PPD is marketed as black henna added to natural henna to accentuate the dark color and shorten the application time. PPD toxicity is well known and extensively reported in medical literature. We report a case of a young Saudi male who presented with characteristic features of acute renal failure and intravascular hemolysis following ingestion of henna mixture. Management of PPD poisoning is only supportive and helpful only if instituted early. Diagnosis requires a high degree of clinical suspicion, as the clinical features are quite distinctive.

Qurashi HE; Qumqumji AA; Zacharia Y

2013-05-01

302

Acute renal failure and intravascular hemolysis following henna ingestion.  

Science.gov (United States)

The powder of henna plant (Lawsonia inermis Linn.) is extensively used as a decorative skin paint for nail coloring and as a hair dye. Most reports of henna toxicity have been attributed to adding a synthetic dye para-phenylenediamine (PPD). PPD is marketed as black henna added to natural henna to accentuate the dark color and shorten the application time. PPD toxicity is well known and extensively reported in medical literature. We report a case of a young Saudi male who presented with characteristic features of acute renal failure and intravascular hemolysis following ingestion of henna mixture. Management of PPD poisoning is only supportive and helpful only if instituted early. Diagnosis requires a high degree of clinical suspicion, as the clinical features are quite distinctive. PMID:23640630

Qurashi, Hala E A; Qumqumji, Abbas A A; Zacharia, Yasir

2013-05-01

303

Operative hysteroscopy intravascular absorption syndrome: A bolt from the blue.  

Science.gov (United States)

Operative hysteroscopy has emerged as an effective alternative to hysterectomy and has become standard surgical treatment for varied gynaecological conditions like abnormal uterine bleeding and uterine myomas. This procedure requires distention of the uterine cavity for adequate visualization of the operative field. 1.5% glycine is a widely used distention medium because it has good optical properties and is non-conductive. However, the intraoperative absorption of this electrolyte-free fluid can cause hyponatraemia, hypoosmolality, hyperglycinaemia and volume overload, including pulmonary oedema. We report a case of operative hysteroscopy intravascular absorption (OHIA) syndrome, presenting abruptly during hysteroscopic myomectomy, employing 1.5% glycine as the fluid distention medium. Successful management of the case and prevention strategies are discussed. PMID:22701213

Sethi, Navdeep; Chaturvedi, Ravindra; Kumar, Krishna

2012-03-01

304

Operative hysteroscopy intravascular absorption syndrome: A bolt from the blue.  

UK PubMed Central (United Kingdom)

Operative hysteroscopy has emerged as an effective alternative to hysterectomy and has become standard surgical treatment for varied gynaecological conditions like abnormal uterine bleeding and uterine myomas. This procedure requires distention of the uterine cavity for adequate visualization of the operative field. 1.5% glycine is a widely used distention medium because it has good optical properties and is non-conductive. However, the intraoperative absorption of this electrolyte-free fluid can cause hyponatraemia, hypoosmolality, hyperglycinaemia and volume overload, including pulmonary oedema. We report a case of operative hysteroscopy intravascular absorption (OHIA) syndrome, presenting abruptly during hysteroscopic myomectomy, employing 1.5% glycine as the fluid distention medium. Successful management of the case and prevention strategies are discussed.

Sethi N; Chaturvedi R; Kumar K

2012-03-01

305

Presentación clínica de los linfomas no hodgkinianos Clinical presentation of non-Hodgkin lymphomas  

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Full Text Available Se realizó un estudio retrospectivo en 644 pacientes con diagnóstico de linfoma no hodgkiniano atendidos en el Servicio de Hematología del Hospital "Hermanos Ameijeiras" con el objetivo de conocer las características clínicas y epidemiológicas de esta enfermedad al debut. La relación masculino femenino fue de 1,02 : 1; el 68,7 % eran de piel blanca; el grupo etáreo más afectado fue el de 55 - 74 años; la toma ganglionar predominó sobre la extraganglionar, con una mayor incidencia en la región cervical; la médula ósea fue la toma extraganglionar más común; la afectación extranodal primaria se presentó en el 15 % de los casos; los síntomas generales se detectaron en el 27,9 % de estos pacientes; la histología agresiva predominó sobre los indolentes y el tipo histológico más observado fue el difuso de células grandes. Al diagnóstico, el 66,1 % se encontraba en estadios avanzados. Se encontró significación estadística al relacionar el grado de agresividad con la presencia de síntomas generales y los estadiosA retrospective study was conducted in 644 patients with diagnosis of non-Kodgkin lymphoma that received attention at the service of Haematology of "Hermanos Ameijeiras" Hospital in order to know the clinical and epidemiological characteristics of this disease on its onset. The males females ratio was 1.02:1. 68.7 % were white and the age group 55-74 was the most affected. The ganglionar taking prevailed over the extraganglionar, with a higher incidence in the cervical region. The bone marrow was the most common extraganglionar taking. The primary extranodal affectation was present in 15 % of the cases. The general symptoms were detected in 27.9 % of these patients. Aggressive histology predominated among the indolents and the most observed histological site was the diffuse of large cells. On diagnosis, 66.1 % were in advanced stages. Statistical significance was found on relating the aggressiveness degree to the presence of general symptoms and stages

Calixto Hernández Cruz; Jorge E Muñío Perurena; Raúl de Castro Arenas; José Carnot Uría; Dayana Pérez Valiente; Carlos A Martínez; Wilfredo Torres Yribar

2003-01-01

306

Linfoma suprarrenal primario bilateral: una presentación inusual/ Bilateral primary adrenal lymphoma: an unusual presentation  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish Presentamos un caso de linfoma no Hodgking de localización exclusiva en ambas glándulas suprarrenales, con afectación de la reserva adrenal. Esta inusual neoplasia, se asocia con una evolución rápida y fatal debido a múltiples complicaciones. En nuestro caso una hipercalcemia severa con hipotensión refractarias al tratamiento determinaron el óbito. Otras muchas complicaciones metabólicas que se presentan durante la evolución de esta neoplasia, podrían ser expli (more) cadas en el contexto del síndrome de lisis tumoral asociado al uso de elevadas dosis de corticoides ante clínica de insuficiencia adrenal. Pese a su extremada rareza, esta entidad, debería incluirse en el diagnostico diferencial de las masas adrenales, unilaterales o bilaterales, ya que el diagnostico precoz es un factor clave para iniciar un tratamiento adecuado, evitar complicaciones potencialmente letales y tratar de aumentar la supervivencia de estos pacientes. El empleo de técnicas de imagen y de la PAAF dirigida por ecografía o TAC, es actualmente la estrategia diagnóstica más válida aunque en la mayoría de los casos, el diagnostico definitivo se obtiene mediante el estudio necrópsico. Abstract in english A case of primary adrenal bilateral non-Hodgking lymphoma, with depressed adrenal reserve is pressented. This rare neoplasm causes rapid evolution and fatal outcome in most cases. In our patient, letal outcome was associated with severe hypercalcemia and refractary hypotension. Many other complications are due to tumoral lysis syndrome associated with high steroid doses in adrenal insufficiency. This rare entity must be included in the differencial diagnosis of adrenal ma (more) sses, uni or bilateral, because early diagnostic is important for preventing complications, potentialy lethals and for improving survival. Image thecnics and ultrasound-guided or computed-tomography-guided FNA, are best diagnostic methods, but in many cases, deffinitive diagnostic is obtained by necropsy

Alama Zaragoza, Mª. A.; Robles Iniesta, A.; Roca Adelantado, I.; Sales Maicas, Mª. A.; Navarro de León, Mª. C.; Román Sánchez, P.

2002-10-01

307

Tratamento do linfoma de Hodgkin após falha do transplante autólogo Treatment of Hodgkin's lymphoma after failure of autologous stem cell transplant  

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Full Text Available O linfoma de Hodgkin (LH) é uma neoplasia do tecido linfóide de excelente prognóstico, porém, aproximadamente 15% dos pacientes em estádios precoces e 35% dos em estádios avançados progridem após o tratamento inicial. O transplante autólogo de medula óssea ou de células-tronco periféricas (ATMO) é o tratamento de escolha nesses casos. Nosso estudo tem como objetivo avaliar o tipo de tratamento utilizado, a taxa de resposta e a sobrevida de pacientes recidivados ou refratários ao ATMO. De 38 pacientes com LH submetidos a ATMO entre abril de 1996 e novembro de 2005, foram avaliados 17 que apresentaram recidiva/refratariedade ao ATMO. Nesses casos, o tratamento de resgate foi individualizado, a depender das condições clínicas de cada um, sendo constituído usualmente de drogas citotóxicas não utilizadas previamente. Após o ATMO, dez (59%) dos 17 pacientes obtiveram remissão completa, um (6%) remissão parcial e seis (35%) foram refratários. Em 14 dos 17 pacientes foi instituída quimioterapia de resgate com diversos esquemas no momento da recidiva/refratariedade após ATMO; um paciente foi tratado com radioterapia exclusiva e dois foram a óbito antes de qualquer terapia. Observamos uma taxa de resposta global de 57,4% (IC95%: 23,2 - 90,7%). A mediana da sobrevida livre de progressão foi de 19 meses e a mediana de sobrevida global foi de 32 meses. Apesar do LH recidivado/refratário ao ATMO não ser curável com os quimioterápicos atualmente disponíveis, os pacientes apresentaram longa sobrevida, com freqüentes exacerbações da doença.Hodgkin's lymphoma (HL) is a lymphoid malignancy with excellent prognosis, however nearly 15% of the patients in early stages and 35% in advanced stages have progressive disease after initial treatment. Autologous bone marrow or hematopoietic stem cell transplantation (ABMT) are the treatments of choice in these cases. This report presents the therapeutic approach and the outcome of HL patients who experience relapse after or are refractory to ABMT. Of 38 patients with LH who underwent ABMT between April 1996 and November 2005, 17 presented with relapsed/refractory disease and were included in this analysis. In these cases, the choice of rescue therapy varied upon the clinical conditions of each patient and was based on previously unused chemotherapy agents. After ABMT, 10 (59%) of the 17 patients were in complete remission, one (6%) in partial remission and six (35%) were refractory. Fourteen of the 17 patients received different schemes of rescue therapy at the time of ABMT failure, one patient was treated exclusively with radiotherapy and two died before any treatment. We observed an overall response rate of 57.4% (95% CI: 23.2 - 90.7%). The median progression-free survival was 19 months and the median overall survival was 32 months. Despite ABTM, relapsed/refractory LH can not be cured with currently available chemotherapeutic agents, the patients had long survival times with frequent exacerbations of the diseas.

Fernanda M. Santos; Luís F. Pracchia; Camila G. C. Linardi; Valeria Buccheri

2008-01-01

308

Linfoma no Hodgkin extraganglionar. Reporte de un caso/ Extraganglionar non-Hodgkin´s lymphoma. A case report  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish El linfoma no Hodgkin extraganglionar es un trastorno linfoproliferativo crónico de causa aún dudosa. Se reporta un caso de una paciente con una masa tumoral a nivel del anillo de Waldeyer, se realizó el diagnóstico por biopsia de la lesión de un linfoma no Hodgkin de alto grado de malignidad extraganglionar. Se inició tratamiento con esquema ChopBleo y se obtuvo repuesta favorable, presentó recaída hematológica dos años más tarde, por lo que se inició tratamiento con radioterapia de cabeza y cuello con resultados alentadores. Actualmente se mantiene asintomática. Abstract in english The extraganglionar non Hodgkin's lymphoma is a chronic lynphoproliferative disorder of still doubtful cause. A case of a patient with a tumoral mass at the level of the Waldeyer ring is reported, the diagnosis by biopsy of the lesion was carried out of a non -Hodgkin's lymphoma of highly degree of extraganglionar malignancy. The treatment with ChopBleo schema was initiated and favorable response was obtained, the patient presented hematological relapse two years later, f (more) or which treatment with radiation therapy of head and neck was initiated with encouraging results. At present is maintained asymptomatic.

Larquin Comet, José Ignacio; Risco Almenares, Gladys Melvys; Alarcón Martínez, Yanet; Álvarez Hidalgo, Roberto

2008-04-01

309

Linfoma primario del sistema nervioso central: serie de casos/ Primary lymphoma of the central nervous system: case series  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish INTRODUCCIÓN: el linfoma primario del sistema nervioso central (LPSNC) corresponde a una causa de importante mortalidad dentro de los tumores primarios del sistema nervioso central, además existen pocos datos epidemiológicos actualmente, razón por la cual se decide hacer un reporte de casos en el grupo de neuropatología de la Universidad de Antioquia. OBJETIVO: describir el comportamiento de esta patología en un grupo de pacientes. MATERIALES Y MéTODOS: se revisaro (more) s los estudios patológicos e historias clínicas de 12 pacientes con diagnóstico de LPSNC en el servicio de neuropatología de la Universidad de Antioquia 2004 el 2011. RESUTADOS: se encontraron 12 pacientes que cumplían el criterio de inclusión. De estos pacientes el 61.5% fueron hombres y el 38.5% mujeres. La edad promedio al momento del diagnóstico fue de 42.6 años (1- 77 años). El Linfoma B no hodking de células gigantes con patrón difuso fue el tumor más frecuente con un 83.3 %, 8.35% corresponde a linfoma de células T, 8.35% a Linfoma de Burkitt; 33.3 % corresponden a pacientes inmunode-ficientes. CONCLUSIóN: en esta serie de pacientes con linfoma del sistema nervioso central se encontraron características clínicas similares a las encontradas en la literatura, quizás el único hallazgo disímil fue la mayor cantidad de pacientes sin aparente alteración en el sistema inmune. Abstract in english INTRODUCTION: primary lymphoma of the central nervous system (PCNSL) is a major cause of mortality in primary tumors of the central nervous system, plus there are only a few epidemiological data today, these are the reasons why it was decided to make a report of cases in the group of neuropathology at the University of Antioquia. OBJETIVES: to describe the behavior of this disease in group of patients. MATERIALS AND METHODS: we reviewed the pathological studies and clinic (more) al records of 12 patients diagnosed with PCNSL in the service of neuropathology at the University of Antioquia from the years of 2004 to 2011. RESULTS: there were 12 patients who met the inclusion criteria. Of these patients, 61.5% were male and 38.5% women. The average age at diagnosis was 42.6 years (1 - 77 years). The giant cell, diffuse pattern B non-Hodgkin lymphoma was the most frequent tumor with 83.3%,T- cell lymphoma with 8.35%, Burkitt lymphoma 8.35%; 33.3% of the patients were immunodeficient. CONCLUSION: in this series of patients with central nervous system lymphoma similar clinical characteristics were found to those in the medical literature, perhaps the only different finding was a higher rate of patients without an apparent alteration in the immune system.

Jiménez Arango, Jorge Andrés; Martínez López, Salomé; Gómez Escobar, Juan Pablo; Uribe Uribe, Carlos Santiago; Arango Viana, Juan Carlos

2012-03-01

310

Linfoma não-Hodgkin em crianças com imunodeficiência: relato de cinco casos Non-Hodgkin's lymphoma in children with immunodeficiency: report of five cases  

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Full Text Available Neste estudo é relatado o quadro clínico de cinco crianças com linfoma não-Hodgkin secundário a imunodeficiência ou imunossupressão: três portadoras do vírus da imunodeficiência humana, uma com imunodeficiência primária e uma após transplante hepático. De acordo com a classificação atual, os tipos histológicos foram: linfoma linfoblástico de células B precursoras (2), linfoma cutâneo de grandes células anaplásico (1), linfoma de células B periféricas, sugestivo de Burkitt (1), e linfoma linfoblástico de células T precursoras (1). Todos os pacientes foram submetidos a quimioterapia, sendo que dois estão em remissão clínica, dois morreram e um continua em tratamento. Após a introdução da terapia anti-retroviral combinada e o aumento dos transplantes de órgãos sólidos ocorre maior risco de neoplasia nesses pacientes. Desse modo, é importante o seguimento desses pacientes para determinar os fatores de risco para o desenvolvimento de neoplasias e definir adequada estratégia de tratamento.The outcomes of five children with non-Hodgkin's lymphomas associated with immunodeficiency or immunosuppression is reported: three children with HIV, one with primary immunodeficiency and one after liver transplantation. According to the REAL classification, two patients had precursor B-lymphoblastic lymphomas, one had an anaplastic large cell lymphoma, one had a peripheral B-cell neoplasm suggestive of Burkitt's lymphoma, and one had precursor T-lymphoblastic lymphoma. All patients received chemotherapy. Two are in complete remission, two died and one remains under treatment. There has been an increasing awareness of the risk of non-Hodgkin's lymphoma and lymphoproliferative disorders after active antiretroviral therapy and with the expansion of solid organ transplant programs in the pediatric setting. Thus, for these patients it is important to establish risk factors for hematological disorders and determine the optimal and safest treatment.

Maria Christina L. A. Oliveira; Adriana R. Rodrigues; Keyla C. Sampaio; Ana Cecília S. C. Gomes; Marcos B. Viana

2008-01-01

311

Linfoma não-Hodgkin em crianças com imunodeficiência: relato de cinco casos/ Non-Hodgkin's lymphoma in children with immunodeficiency: report of five cases  

Scientific Electronic Library Online (English)

Full Text Available Abstract in portuguese Neste estudo é relatado o quadro clínico de cinco crianças com linfoma não-Hodgkin secundário a imunodeficiência ou imunossupressão: três portadoras do vírus da imunodeficiência humana, uma com imunodeficiência primária e uma após transplante hepático. De acordo com a classificação atual, os tipos histológicos foram: linfoma linfoblástico de células B precursoras (2), linfoma cutâneo de grandes células anaplásico (1), linfoma de células B periféric (more) as, sugestivo de Burkitt (1), e linfoma linfoblástico de células T precursoras (1). Todos os pacientes foram submetidos a quimioterapia, sendo que dois estão em remissão clínica, dois morreram e um continua em tratamento. Após a introdução da terapia anti-retroviral combinada e o aumento dos transplantes de órgãos sólidos ocorre maior risco de neoplasia nesses pacientes. Desse modo, é importante o seguimento desses pacientes para determinar os fatores de risco para o desenvolvimento de neoplasias e definir adequada estratégia de tratamento. Abstract in english The outcomes of five children with non-Hodgkin's lymphomas associated with immunodeficiency or immunosuppression is reported: three children with HIV, one with primary immunodeficiency and one after liver transplantation. According to the REAL classification, two patients had precursor B-lymphoblastic lymphomas, one had an anaplastic large cell lymphoma, one had a peripheral B-cell neoplasm suggestive of Burkitt's lymphoma, and one had precursor T-lymphoblastic lymphoma. (more) All patients received chemotherapy. Two are in complete remission, two died and one remains under treatment. There has been an increasing awareness of the risk of non-Hodgkin's lymphoma and lymphoproliferative disorders after active antiretroviral therapy and with the expansion of solid organ transplant programs in the pediatric setting. Thus, for these patients it is important to establish risk factors for hematological disorders and determine the optimal and safest treatment.

Oliveira, Maria Christina L. A.; Rodrigues, Adriana R.; Sampaio, Keyla C.; Gomes, Ana Cecília S. C.; Viana, Marcos B.

2008-01-01

312

Intravascular radiation for restenosis prevention: could it be the holy grail?  

Energy Technology Data Exchange (ETDEWEB)

This brief editorial discusses the use of intravascular radiation in preventing restenosis after angioplasty in coronary interventions. Results in porcine coronary arteries and clinical applications are briefly reported. (UK).

King, S.B. [Emory Univ., Atlanta, GA (United States)

1996-08-01

313

The use of recombinant factor VIIa in a pediatric septic shock patient with disseminated intravascular coagulation  

Directory of Open Access Journals (Sweden)

Full Text Available This is a report on a pediatric patient with septic shock and disseminated intravascular coagulation, who developed life-threatening bleeding which was successfully treated with recombinant factor VIIa.

Ronaldo Arkader; Eduardo Juan Troster; Albert Bousso

2008-01-01

314

Measurement of intravascular Na(+) during increased CBF using (23)Na NMR with a shift reagent.  

Science.gov (United States)

Sodium ions are intimately involved with neural activity. Thus, it is highly desirable to devise a way of mapping brain activity via sodium imaging. Sodium ions exist in the extravascular and intravascular spaces. To separate the two components, the shift reagent Tm(DOTP)(5-) was intravenously introduced into rats. Intravascular sodium changes in the rat brain were measured during increased blood flow induced by hypercapnia using volume-localized (23)Na-NMR. The intravascular sodium changes, equivalent to cerebral blood volume changes, are significant during hypercapnia conditions and correlate well with the increase in arterial pCO(2). This suggests that the intravascular sodium change is dominant in total (23)Na spectroscopy or imaging of the brain during blood flow increase induced by external perturbation. PMID:11746937

Ronen, I; Kim, S G

315

Measurement of intravascular Na(+) during increased CBF using (23)Na NMR with a shift reagent.  

UK PubMed Central (United Kingdom)

Sodium ions are intimately involved with neural activity. Thus, it is highly desirable to devise a way of mapping brain activity via sodium imaging. Sodium ions exist in the extravascular and intravascular spaces. To separate the two components, the shift reagent Tm(DOTP)(5-) was intravenously introduced into rats. Intravascular sodium changes in the rat brain were measured during increased blood flow induced by hypercapnia using volume-localized (23)Na-NMR. The intravascular sodium changes, equivalent to cerebral blood volume changes, are significant during hypercapnia conditions and correlate well with the increase in arterial pCO(2). This suggests that the intravascular sodium change is dominant in total (23)Na spectroscopy or imaging of the brain during blood flow increase induced by external perturbation.

Ronen I; Kim SG

2001-11-01

316

El Tratado Antártico, vehículo de paz en un campo minado  

Scientific Electronic Library Online (English)

Full Text Available Abstract in spanish El 99% de la superficie de la Antártica, esto es 14 millones de Km², está cubierta por hielos de unos 2 Km de profundidad. Además de ser el continente más frío, la Antártica es también el más seco, ventoso y alto del mundo, con una elevación media de 2.500 Mt. Tales características físicas explican la ausencia de población humana indígena en el área, así como lo tardío de su exploración y explotación por parte de estados europeos y americanos entre otro (more) s. Sólo a partir del siglo XVIII comienzan las expediciones al territorio antártico, con finalidades que van desde la investigación científica, pasando por la pesca de ballenas, hasta intentos de anexión territorial por parte de alguna nación. Conforme avanza el siglo XX, continúa la penetración del continente y los reclamos de soberanía sobre distintas áreas de la zona. Esto dio pie a disputas y choques entre estados. Durante la II Guerra Mundial amenazaba con transformarse en un nuevo escenario de enfrentamiento bélico entre las fuerzas enemigas. A lo largo de la Guerra Fría, se ve con temor que la Antártica podría ser tomada como centro de pruebas de armamento convencional y nuclear. A fin de evitar estos males y regularizar la explotación y exploración del continente, nació el Sistema del Tratado Antártico o STA. El régimen fue creado en 1958-1959 y pretendió detener las demandas de soberanía territorial además de salvaguardar el área de cualquier amenaza nuclear y militar. Aunque las partes signatarias tienen un evidente interés de futura anexión territorial, y el STA no ha logrado dar solución al problema de la soberanía sobre el continente, al menos ha congelado una peligrosa fuente de discordia e inestabilidad regional y mundial. Especialmente interesantes son los casos de Chile, Argentina y el Reino Unido, cuyas demandas territoriales sobrepuestas constituyen un buen ejemplo del choque de los títulos de soberanía esgrimidos por diversas naciones, con frecuencia basados en diferentes sistemas jurídicos. Finalmente, el establecimiento del Tratado Antártico ha dado tiempo a la evolución del derecho internacional, con la esperanza de que futuras regulaciones territoriales puedan traer una solución no violenta respecto a la posesión del continente. Abstract in english The history of human activity in Antarctic is largely explained by its remoteness and its unique physical characteristics. 99% of its surface, i.e. 14 million Km², is covered by ice with an average depth of 2 km, constituting over 90% of the globe's ice. Besides being the coldest continent, it is also the driest, the windiest and the highest, with an average elevation of 2,500 m. The harshness of its environment explains the lack of indigenous human population of the are (more) a and the late dates of its recognition. As the legal, political and economic interest in the region took shape, different countries started to assert their right to territorial sovereignty over various parts of the continent. The strong emphasis on sovereignty, particularly in the context of overlapping claims by various nations, resulted in clashes -verbal and physical - which threatened the peaceful relations in Antarctic. Within this context the Antarctic Treaty and its supporting agreements and arrangements -collectively, the Antarctic Treaty System or ATS- emerged. The regime was created in 1958-1959 aiming to halt the potentially explosive nature of the sovereignty claims and trying to safeguard the area from any nuclear and military threat. In regards to the claims, those put forward by Chile, Argentina and the United Kingdom, are a good example of overlapping territorial demands based on diverse legal systems. Although the ATS has been a remarkable agreement, it has also has several problems. In fact, the management of the sovereignty issue has been both its principle problem and its most brilliant achievement. ATS has simultaneously frozen a very difficult issue and given time to the evolution of international law, with t

Prieto Larrain, M. Cristina

2004-01-01

317

El Tratado Antártico, vehículo de paz en un campo minado  

Directory of Open Access Journals (Sweden)

Full Text Available El 99% de la superficie de la Antártica, esto es 14 millones de Km², está cubierta por hielos de unos 2 Km de profundidad. Además de ser el continente más frío, la Antártica es también el más seco, ventoso y alto del mundo, con una elevación media de 2.500 Mt. Tales características físicas explican la ausencia de población humana indígena en el área, así como lo tardío de su exploración y explotación por parte de estados europeos y americanos entre otros. Sólo a partir del siglo XVIII comienzan las expediciones al territorio antártico, con finalidades que van desde la investigación científica, pasando por la pesca de ballenas, hasta intentos de anexión territorial por parte de alguna nación. Conforme avanza el siglo XX, continúa la penetración del continente y los reclamos de soberanía sobre distintas áreas de la zona. Esto dio pie a disputas y choques entre estados. Durante la II Guerra Mundial amenazaba con transformarse en un nuevo escenario de enfrentamiento bélico entre las fuerzas enemigas. A lo largo de la Guerra Fría, se ve con temor que la Antártica podría ser tomada como centro de pruebas de armamento convencional y nuclear. A fin de evitar estos males y regularizar la explotación y exploración del continente, nació el Sistema del Tratado Antártico o STA. El régimen fue creado en 1958-1959 y pretendió detener las demandas de soberanía territorial además de salvaguardar el área de cualquier amenaza nuclear y militar. Aunque las partes signatarias tienen un evidente interés de futura anexión territorial, y el STA no ha logrado dar solución al problema de la soberanía sobre el continente, al menos ha congelado una peligrosa fuente de discordia e inestabilidad regional y mundial. Especialmente interesantes son los casos de Chile, Argentina y el Reino Unido, cuyas demandas territoriales sobrepuestas constituyen un buen ejemplo del choque de los títulos de soberanía esgrimidos por diversas naciones, con frecuencia basados en diferentes sistemas jurídicos. Finalmente, el establecimiento del Tratado Antártico ha dado tiempo a la evolución del derecho internacional, con la esperanza de que futuras regulaciones territoriales puedan traer una solución no violenta respecto a la posesión del continente.The history of human activity in Antarctic is largely explained by its remoteness and its unique physical characteristics. 99% of its surface, i.e. 14 million Km², is covered by ice with an average depth of 2 km, constituting over 90% of the globe's ice. Besides being the coldest continent, it is also the driest, the windiest and the highest, with an average elevation of 2,500 m. The harshness of its environment explains the lack of indigenous human population of the area and the late dates of its recognition. As the legal, political and economic interest in the region took shape, different countries started to assert their right to territorial sovereignty over various parts of the continent. The strong emphasis on sovereignty, particularly in the context of overlapping claims by various nations, resulted in clashes -verbal and physical - which threatened the peaceful relations in Antarctic. Within this context the Antarctic Treaty and its supporting agreements and arrangements -collectively, the Antarctic Treaty System or ATS- emerged. The regime was created in 1958-1959 aiming to halt the potentially explosive nature of the sovereignty claims and trying to safeguard the area from any nuclear and military threat. In regards to the claims, those put forward by Chile, Argentina and the United Kingdom, are a good example of overlapping territorial demands based on diverse legal systems. Although the ATS has been a remarkable agreement, it has also has several problems. In fact, the management of the sovereignty issue has been both its principle problem and its most brilliant achievement. ATS has simultaneously frozen a very difficult issue and given time to the evolution of international law, with the hope that the future might bring a non-violent solutio

M. Cristina Prieto Larrain

2004-01-01

318

The Incidence of Intravascular Needle Entrance during Inferior Alveolar Nerve Block Injection  

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Full Text Available Background and aims. Dentists administer thousands of local anesthetic injections every day. Injection to a highly vascular area such as pterygomandibular space during an inferior alveolar nerve block has a high risk of intravascular needle entrance. Accidental intravascular injection of local anesthetic agent with vasoconstrictor may result in cardiovascular and central nervous system toxicity, as well as tachycardia and hypertension. There are reports that indicate aspiration is not performed in every injection. The aim of the present study was to assess the incidence of intravascular needle entrance in inferior alveolar nerve block injections. Materials and methods. Three experienced oral and maxillofacial surgeons performed 359 inferior alveolar nerve block injections using direct or indirect techniques, and reported the results of aspiration. Aspirable syringes and 27 gauge long needles were used, and the method of aspiration was similar in all cases. Data were analyzed using t-test. Results. 15.3% of inferior alveolar nerve block injections were aspiration positive. Intravascular needle entrance was seen in 14.2% of cases using direct and 23.3% of cases using indirect block injection techniques. Of all injections, 15.8% were intravascular on the right side and 14.8% were intravascular on the left. There were no statistically significant differences between direct or indirect block injection techniques (P = 0.127) and between right and left injection sites (P = 0.778). Conclusion. According to our findings, the incidence of intravascular needle entrance during inferior alveolar nerve block injection was relatively high. It seems that technique and maneuver of injection have no considerable effect in incidence of intravascular needle entrance.

Ali Taghavi Zenouz; Hooman Ebrahimi; Masoumeh Mahdipour; Sara Pourshahidi; Parisa Amini; Mahdi Vatankhah

2008-01-01

319

[Hemorrhagic gastritis caused by localised intravascular coagulation during the course of cryptogenic inflammatory cirrhosis  

UK PubMed Central (United Kingdom)

The authors report here a case of antral hemorrhagic gastritis without ulceration nor erosion, but with intravascular coagulation within the chorionic layer, which had a prolonged course in a patient with non-alcoholic cirrhosis, and which continued in spite of surgical cure of portal hypertension. The authors discuss various theories which might explain this hemorrhage and the development of localised intravascular coagulation, together with its relationship with the cirrhosis.

Testart J; Hemet J; Metayer P

1975-04-01

320

Tratamento cirúrgico do linfoma gástrico primário Surgical treatment of primary gastric lymphoma  

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Full Text Available OBJETIVO: o objetivo deste estudo retrospectivo foi analisar os resultados de 25 doentes com linfoma gástrico primário operados com intenção curativa. MÉTODO: os dados foram obtidos pela revisão dos prontuários e contato com os doentes ou familiares. A doença foi estadiada pelo sistema Ann Arbor modificado por Musshoff e Schmidt-Vollmer e a classificação histológica utilizada foi o sistema de Kiel. O esquema de radioterapia utilizado foi o CHOP e a radioterapia aplicada foi de 2000 a 4000 cGy. RESULTADOS: os sintomas e sinais clínicos assemelhavam-se aos da doença péptica ulcerosa ou do carcinoma gástrico Obteve-se o diagnóstico pré-operatório pela biópsia endoscópica em três casos e a exploração cirúrgica foi necessária para o diagnóstico nos restantes. No pré-operatório, sete doentes (30,4%) foram submetidos ao mielograma, que foi normal. Todos os pacientes foram submetidos à ressecção (12 gastrectomias subtotais e 13 gastrectomias totais) com retirada dos linfonodos regionais. Dez doentes (40%) receberam tratamento complementar (quimioterapia e/ou radioterapia). O estadiamento foi significativamente mais avançado nas lesões fundocárdicas e nos mais idosos e a sobrevida média foi de 31,5 meses. CONCLUSÕES: nesta série, as variáveis que influenciaram significativamente os índices de sobrevida foram a idade e o estádio avançados, o tamanho da lesão maior que 6,0cm e a realização do tratamento adjuv