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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

2002-09-01

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

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Full Text Available SciELO Venezuela | Language: Spanish 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 desarroll [...] ar 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. 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 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.

2011-03-01

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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

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 SciELO Brazil | Language: English 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 conse [...] cutivos 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. 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 i [...] nstitutions 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.

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.

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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.

2002-01-01

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Linfoma maligno multicêntrico canino  

OpenAIRE

O linfoma maligno canino é um grupo heterogéneo de neoplasias com origem nas células linfóides, podendo atingir praticamente todas as regiões do organismo. A presente dissertação refere-se ao período de Setembro de 2008 a Junho de 2009, durante o qual foi desenvolvida a componente prática do Estágio Curricular de Mestrado Integrado, no Hospital Escolar da FMV, de Setembro 2008 a Fevereiro de 2009. Durante este período procedeu-se ao estudo de linfoma maligno multicê...

Proenc?a, Ana Rita Dos Santos Gonc?alves

2009-01-01

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Linfoma renal primario / Primary renal lymphoma  

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Full Text Available SciELO Spain | Language: Spanish 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 cons [...] ulta por dolor en fosa renal derecha. Al realizar varias pruebas complementarias se llegó al diagnóstico de masa renal derecha, cuyo estudio anatomopatológico tras punción-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 re [...] nal mass by imaging studies. Inmunohistochemical investigations revealed a B-cell-type lymphoma. He received combination chemotherapy with CHOP. CONCLUSIONS: Primary renal lymphoma 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).

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

2003-08-01

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Tratamiento del linfoma cutáneo de células T con bexaroteno a dosis bajas en combinación con fototerapia o interferon alfa: comunicación de ocho casos tratados en el Hospital Edgardo Rebagliati Martins, 2003-2007, Lima, Perú / Therapy for cutaneous T-cell lymphoma using low-dose bexarotene combined with phototherapy or alpha-interferon: Report of eight cases treated in Hospital Nacional Edgardo Rebagliati-Martins, Lima, Peru between 2003 and 2007  

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Full Text Available SciELO Peru | Language: Spanish Abstract in spanish Introducción: bexaroteno es un rexinoide aprobado en el tratamiento de estadios tempranos y avanzados del linfoma cutáneo de células T (LCCT). Caso Clínico: el presente reporte de casos mostramos los resultados del empleo de bexaroteno en dosis bajas más fototerapia o Interferon alfa 9 millones en e [...] l tratamiento del LCCT. Ocho pacientes fueron tratados, cinco fueron Micosis fungoides, dos Linfoma Epidermotrópico CD8 agresivo y uno fue un Síndrome Sézary. La respuesta global fue del 62.5% (5/8) y la duración media de respuesta fue de 20 meses. El bexaroteno en dosis bajas en combinación a fototerapia o interferon alfa 2a puede ser efectivo en el tratamiento del LCCT. Abstract in english Introduction: Bexarotene is a rexinoid compound that is approved for use in the therapy for early and advanced stage cutaneous T-cell lymphoma (CTCL). Clinical Cases: We present in this report the results of the use of low-dose bexarotene plus phototherapy or alpha-interferon, nine million units, in [...] the treatment of CTCL. Eight patients were treated, five had mycosis fungoides, two had CD-8 epidermothropic aggressive lymphoma. The overall response rate was 62.5% (5/8), and the mean duration of response was 20 months. Low-dose bexarotene combined with phototherapy or alpha-interferon may be effective in the treatment of CTCL.

Brady, Beltrán Gárate; Antonio, Paredes Arcos; Celia, Moisés Alfaro; Gadwin, Sanchez Félix; Luis, Riva Gonzales; Fernando, Hurtado de Mendoza; Esther, Cotrina Montenegro; Renzo, Rojas.

2008-10-01

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LINFOMA PULMONAR PRIMARI0  

OpenAIRE

Se presentó el caso de un paciente con enfermedad de Hodgkin aquejado de linfoma pulmonar primario; se revisaron los diversos métodos diagnósticos empleados, así como el diferencial. El diagnóstico radiológico fue el más utilizado. Se discutieron los criterios anatomopatológicos de extensión y cronológicos necesarios para la confirmación. Se destacó que la quimioterapia es útil en la evolución de estos enfermos.

Rez, Rafael Pila P. U. E.; Ez, Rafael Pila Pel U. E.; Juan del Sol Sosa; Edn Prieto, V. U. Edctor Holgu U.

2004-01-01

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LINFOMA PULMONAR PRIMARI0  

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Full Text Available Se presentó el caso de un paciente con enfermedad de Hodgkin aquejado de linfoma pulmonar primario; se revisaron los diversos métodos diagnósticos empleados, así como el diferencial. El diagnóstico radiológico fue el más utilizado. Se discutieron los criterios anatomopatológicos de extensión y cronológicos necesarios para la confirmación. Se destacó que la quimioterapia es útil en la evolución de estos enfermos.

Rafael Pila P\\u00E9rez

2004-01-01

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Tumor intracardíaco como presentación de leiomiomatosis intravascular / Intracardiac tumor as presentation of Intravascular leiomyomatosis  

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Full Text Available SciELO Chile | Language: Spanish Abstract in spanish Presentamos un caso de leiomiomatosis intravascular que se extiende a cavidades cardiacas derechas, siendo tratado mediante cirugía en un tiempo. [...] Abstract in english We present a case of an intravenous leiomyomatosis extending into the right cardiac chambers, which was treated by one stage surgery. [...

Javier, Labbé; Andrés, Pumarino; Gerardo, Valdivia; Julio, Ibarra; Lorenzo, Merello; Manuel, Quiroz.

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

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Full Text Available SciELO Spain | Language: Spanish Abstract in spanish 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 linf [...] oma 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. Abstract in english 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 or [...] bital 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.

2008-02-01

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Linfoma de Burkitt Burkitt lymphoma  

OpenAIRE

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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Linfoma de Burkitt / Burkitt lymphoma  

Scientific Electronic Library Online (English)

Full Text Available SciELO Cuba | Language: Spanish 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. [...

Fernando, Sierra Arego; Carlos Michel, López Rodríguez.

2012-03-01

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Linfoma não Hodgkin gástrico Gastric non-Hodgkin Lymphoma  

OpenAIRE

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 indolent...

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

2010-01-01

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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

2011-10-01

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Linfoma primario de pulmón: Serie de casos / Primary pulmonary lymphoma: A case serie  

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Full Text Available SciELO Chile | Language: Spanish Abstract in spanish Los linfomas primarios de pulmón (LPP) son infrecuentes. Sus manifestaciones clínicas y las imágenes son inespecíficas. El retraso diagnóstico puede ser considerable. Objetivo: Analizar los LPP durante el período 2003-2013 en nuestra institución. Sobre 1892 linfomas, 4 fueron LPP (0,21%): 1) linfoma [...] no Hodgkin (n = 2); 2) linfoma Hodgkin (n= 1); 3) linfoma intravascular pulmonar (n = 1). Las manifestaciones clínicas y radiológicas fueron inespecíficas (masa pulmonar y derrame pleural, consolidación con broncograma aéreo y cavitación o bien ausencia de lesiones). Los métodos diagnósticos fueron: 1) punción guiada bajo TAC; 2) videotoracoscopía (VATS) y 3) VATS orientada por PET (tomografia por emisión de positrones) y 4) toracotomía. El tiempo entre la consulta inicial hasta el diagnóstico fue de 45 a 90 días. Este reporte confirma la baja incidencia de LPP, y sus manifestaciones clínicas y radiologías poco específicas. Esto puede contribuir a las demoras en el diagnóstico. El PETpuede mejorar el rendimiento diagnóstico, en especial en ausencia de compromiso pulmonar radiológico evidente. Abstract in english Primary Pulmonary Lymphomas (LPP) are infrequent and their clinical manifestations and images are usually nonspecific. Diagnostic delay may be important. The objective of this study was to analyze the LLP in our institution. Between 2003 and 2013, over 1,892 lymphomas were analyzed in our institutio [...] n. Only 4 of them (0.21% incidence) were detected as LPP: Non Hodgkin's Lymphoma (n = 2), Hodgkin's Lymphoma (n = 1), and Intravascular Pulmonary Lymphoma (n = 1). Clinical manifestations of the 4 cases presented were unspecific: 1) pulmonary mass and pleural effusion; 2) consolidation with air bronchogram and cavitations; 3) normal images and 4) pulmonary mass. Given these clinical settings, 4 diagnostic methods were used: 1) Computed Tomography-Guided Puncture, 2) Video-Assisted Thoracoscopic Surgery (VATS); 3) VATS guided by positron emission tomography (PET) and 4) thoracotomy. Hence, diagnosis was successfully made between 45 to 90 days from the initial consultation. This report confirms the low incidence of LPP, and its unspecific clinical and radiographic manifestations that may cause delay in diagnosis. PET can contribute to improve diagnostic performance, especially in patients without apparent lung involvement.

JULIO C, VILLARROEL S; MÁXIMO, ROMANCZUK; ESTEBAN J, WAINSTEIN; MARCOS, LAS HERAS; EDUARDO L, DE VITO; GRACIELA, SVETLIZA; JUAN A, PRECERUTTI.

2014-03-01

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Intravascular malignant lymphomatosis  

International Nuclear Information System (INIS)

Intravascular malignant lymphomatosis is a rare and probably often overlooked disease characterised by massive intravascular proliferation of lymphoid cells, usually with a poor prognosis. CT and MRI appearances are nonspecific; the most suggestive finding being both asymmetrical, bilateral, contrast enhancing high-signal areas on T2 weighting and infarct-like lesions of the cortex and basal ganglia. We report two patients with previously unreported dural and spinal cord involvement. (orig.)

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Intravascular malignant lymphomatosis  

Energy Technology Data Exchange (ETDEWEB)

Intravascular malignant lymphomatosis is a rare and probably often overlooked disease characterised by massive intravascular proliferation of lymphoid cells, usually with a poor prognosis. CT and MRI appearances are nonspecific; the most suggestive finding being both asymmetrical, bilateral, contrast enhancing high-signal areas on T2 weighting and infarct-like lesions of the cortex and basal ganglia. We report two patients with previously unreported dural and spinal cord involvement. (orig.)

Martin-Duverneuil, N.; Lafitte, F.; Chiras, J. [Service de Neuroradiologie Charcot, Batiment Babinski, Hopital de la Salpetriere, 75013 Paris (France); Mokhtari, K. [Service de Neuropathologie, Hopital de la Salpetriere, 75013 Paris (France); Behin, A.; Hoang-Xuan, K. [Departement de Neurologie, Hopital de la Salpetriere, 75013 Paris (France)

2002-09-01

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Coagulación intravascular diseminada = Disseminated intravascular coagulation  

OpenAIRE

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 y en algunos casos a ...

Arango Barrientos, Marcos

2010-01-01

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Linfoma de Burkitt Gastrintestinal da Criança  

OpenAIRE

O Linfoma de Burkitt (LB) gastrintestinal é um subtipo de linfoma não Hodgkin (LNH) que surge com maior frequência no íleon e no cego, sobretudo na sua forma esporádica e na criança. O LB do estômago e do duodeno é particularmente raro e pode manifestar-se de diversas formas. Os autores apresentam dois casos clínicos de LB do estômago e do duodeno, em idade pediátrica.

Silva Couto, A.; Cabral, J.

2005-01-01

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LINFOMA NO HODGKIN PRIMARIO DE LA MAMA  

OpenAIRE

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

Mario Pardo G; Nelson Burgos S.

2003-01-01

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Linfoma de Hodgkin con afectación ósea: comunicación de un caso y revisión de la literatura  

Scientific Electronic Library Online (English)

Full Text Available SciELO Spain | Language: Spanish Abstract in spanish Existen pocas comunicaciones en la literatura acerca de la afectación ósea primaria por linfoma de Hodgkin. El linfoma de Hodgkin representa menos del 0'15% de los tumores malignos primarios del hueso, aunque por radiología es frecuente detectar lesiones óseas en pacientes con enfermedad de Hodgkin. [...] Comunicamos el caso de un paciente inicialmente diagnosticado de linfoma de Hodgkin en fémur izquierdo, tratado con un régimen combinado de quimioradioterapia secuencial, que permanece libre de recaída a cuatro años después, aprovechando para revisar la literatura respecto a su diagnóstico y tratamiento. Abstract in english There are few literature reports about bone primary Hodgkin's lymphoma. Hodgkin's lymphoma represents less than 0.15 % of the primary malignant bone tumors, although radiology studies frequently detect bone lesions in patients with Hodgkin's disease. We report the case of a patient that was initiall [...] y diagnosed of bone Hodgkin's lymphoma with left femur involvement. The patient was treated by a combined regime of sequential chemo-radiotherapy in our Oncology Unit. He remains relapse-free three years after diagnosis. Taking advantage of our report we reviewed the literature looking for diagnostic and treatment strategies for the process.

D., Márquez Medina; B., Márquez Lobo; M. C., Talavera Hernández; I., Blancas López-Barajas; I., Sáez Medina; J. L., García Puche.

2004-03-01

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Linfoma de ovario / Ovarian lymphoma  

Scientific Electronic Library Online (English)

Full Text Available SciELO Cuba | Language: Spanish Abstract in spanish Introducción: el 50 % de la patología oncológica en pediatría corresponde a masas o tumores sólidos, alrededor del 20 % del total se ubica en abdomen. Los tumores que se presentan con mayor frecuencia en el abdomen son el nefroblastoma o tumor de Wilms, el linfoma tipo Burkitt, el neuroblastoma y lo [...] s tumores germinales de ovario. Objetivo: presentar un caso pediátrico con tumor abdominal. Caso clínico: se presenta un caso de una niña de 8 años de edad con antecedentes de salud aparente, atendida en el Hospital Público de la Universidad de Mbarara, Uganda. Resultado: paciente pediátrica que fue ingresada con una historia de 3 meses de dolor abdominal, pérdida ligera de peso y masa abdominal de crecimiento rápido, fue sometida a una laparotomía exploradora donde se resecó la masa tumoral, la que histológicamente arrojó ser un linfoma ovárico, como hallazgo durante la intervención quirúrgica se diagnosticó una agenesia de útero. Conclusión: la paciente se encuentra después del tratamiento con quimioterapia en seguimiento, lleva aparentemente hace 5 meses una vida normal (noviembre 2011). Abstract in english Introduction: 50 % of pediatric oncologic pathology corresponds to mass or solid tumors, reaching about 20 % of total abdomen. The tumors that most frequently occur in the abdomen are nephroblastoma or Wilms tumor, Burkitt's lymphoma, neuroblastoma, and ovarian germ cell tumors. Objective: to presen [...] t a pediatric case with abdominal tumor. Case report: we report a case of an 8 year old girl with a history of apparent good health. This patient was assisted the Public Hospital of Mbarara University, Uganda. Result: a female pediatric patient was admitted with a 3-month history of abdominal pain, mild weight loss, and rapid growth of an abdominal mass. This patient underwent an exploratory laparotomy where the tumor mass was removed. It was histologically confirmed as an ovarian lymphoma. It was diagnosed uterus agenesis. Conclusion: after chemotherapy, the patient is controlled, and she has an apparently normal life for already 5 months (November 2011).

Iván, Bonet Fonseca; Amnia, Díaz Anaya; Tabu, Francis; Yarine Leonell, Fajardo Tornés.

2012-09-01

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Linfomatosis intravascular de presentación pulmonar / Intravascular lymphomatosis presenting in the lung  

Scientific Electronic Library Online (English)

Full Text Available SciELO Spain | Language: Spanish Abstract in spanish Se presenta un caso de linfomatosis intravascular cuyas primeras manifestaciones clínicas fueron síntomas pulmonares (tos no productiva, hipoxia y patrón radiológico reticulointersticial), seguidas de fiebre de origen desconocido y síndrome confusional. El diagnóstico se obtuvo mediante estudio hist [...] ológico e inmunohistoquímico postmortem, observándose en el pulmón tabiques alveolares engrosados por la presencia de células atípicas en el interior de los capilares que también ocupaban las luces de pequeños vasos, evidenciándose de forma aislada salida de las mismas al estroma fibroso perivascular y peribronquial. Las técnicas inmunohistoquímicas sobre cortes en parafina revelaron en las células tumorales positividad para CD45 (Antígeno Leucocitario Común) y para CD20 (Marcador Pan-B), siendo negativas para CD45-Ro (Marcador Pan-T) y para el marcador endotelial CD34, inmunofenotipo de Linfoma Difuso Angiotropo de Células Grandes B, confirmándose por reordenación de cadenas pesadas de inmunoglobulinas (IgH). Se revisan las características principales de esta entidad, en especial sus manifestaciones pulmonares y la necesidad de incluirla en el diagnóstico diferencial procesos de apariencia clínica sistémica. Abstract in english A case of intravascular lymphomatosis with predominant symptoms in the lung (cough and interstitial pulmonary infiltrates) is presented. Fever and confusion were lateness symptoms. Examination postmortem established the diagnosis. In the lung alveolar walls, small arterioles and the capillaries were [...] occupied by atypical cells positives for CD45 and CD20, leukocyte and pan-B markers, and negatives for CD45-Ro and CD34, pan-T and endothelial markers. The main characteristics and the lung participation of this entity were reviewed.

J.M., Sastre; R., Folgado; O., Burges; Mª.D., Zaragoza; V., Oliver.

2001-06-01

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Linfoma de Hodgkin na infância e adolescência: 15 anos de experiência com o protocolo DH-II-90 Hodgkin's lymphoma in children and adolescents: 15 years of experience with the DH-II-90 protocol  

OpenAIRE

O desafio do tratamento do linfoma de Hodgkin na infância reside na redução da toxicidade aguda e tardia sem afetar os bons resultados terapêuticos. Crianças e adolescentes portadores de linfoma de Hodgkin recém-diagnosticado foram tratados com o protocolo institucional DH-II-90. Os objetivo deste trabalho foram: 1)avaliar as taxas de sobrevida global (SG) e livre de eventos (SLE) do protocolo DH-II-90 aplicado a portadores de LH; 2)avaliar as taxas de SG e SLE conforme estádio, idade,...

Souza, Luciana N. S.; Maluf Junior, Paulo T.; Almeida, Maria Tereza A.; Eduardo Weltman; Ana Lucia Cornacchioni; Teixeira, Roberto Augusto P.; Vicente Odone Filho; Lilian Maria Cristofani

2010-01-01

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Disseminated intravascular coagulation  

OpenAIRE

Disseminated intravascular coagulation (DIC) is a reflection of an underlying systemic disorder which affects the coagulation system, simultaneously resulting in pro-coagulant activation, fibrinolytic activation, and consumption coagulopathy and finally may result in organ dysfunction and death. Though septicaemia is the most common cause of DIC, several other conditions can also lead to it. A diagnosis of DIC should be made only in the presence of a causative factor supported by repeated lab...

Stiehm, E. Richard

2014-01-01

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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 SciELO Brazil | Language: English 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 um [...] a 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. 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 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.

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

2011-10-01

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Coagulación intravascular diseminada / Disseminated intravascular coagulation  

Scientific Electronic Library Online (English)

Full Text Available SciELO Colombia | Language: Spanish 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 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. Clinical 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.

Marcos, Arango Barrientos.

2010-12-01

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

Directory of Open Access Journals (Sweden)

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

2008-11-01

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Coagulación intravascular diseminada = Disseminated intravascular coagulation  

Directory of Open Access Journals (Sweden)

Full Text Available 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 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.

Arango Barrientos, Marcos

2010-12-01

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Utilidade da PET/CT, (18F-FDG), no estudo do linfoma Hodgkin e linfoma não Hodgkin  

OpenAIRE

Os linfomas são tumores estabelecidos a nível do sistema linfático. Devido à sua heterogeneidade classificam-se como Linfoma Hodgkin (LH) e Linfoma não Hodgkin (LNH), apresentando diferente prognóstico e seguimento quimioterapêutico. Actualmente, a Photon Emission Tomography/Computed Tomography (PET/CT, do acrónimo inglês) é considerada “imagem” de excelência no estudo desta patologia. Neste contexto, é objectivo deste artigo verificar a utilidade da técnica PET/CT e...

Milho?es, Marta; Infante, J. R.; Rayo, J. I.; Garcia, L. B.; Vieira, Lina

2009-01-01

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Linfoma de celulas B de la zona marginal extraganglionar del tejido linfoide asociado a mucosa (linfoma MALT) de pulmón  

OpenAIRE

Los Linfomas Pulmonares Primarios son extremadamente raros (0,4% de los linfomas extraganglionares), y generalmente son de tejido linfoide asociado a mucosas (tipo MALT), con ocasionales linfomas de células grandes difusos. Los síntomas son inespecíficos, y casi la mitad de los pacientes son asintomáticos. Se presenta el caso de un paciente masculino de 56 años de edad, quien presentó durante 7 meses accesos diarios de tos seca, de predominio nocturno, asociados en el último mes a fieb...

Carlos Vergara-Uzcategui; Melizabeth Ruiz

2014-01-01

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Linfomas del tubo digestivo y glándulas anexas en pacientes con SIDA. Serie de casos  

Directory of Open Access Journals (Sweden)

linfoma. La incidencia global de linfomas (primarios del sistema nervioso central, no Hodgkin sistémicos y de Hodgkin durante el período de estudio fue de 2,9% (54 casos; 17 pacientes (32% tuvieron diagnóstico de LNH sistémicos; 10 (58,8% de ellos tuvieron presentación extranodal al momento del inicio de las manifestaciones clínicas y 8 (80% comprometieron el tubo digestivo y las glándulas anexas (parótida, cavum, esófago, estómago, duodeno, colon derecho en 2 casos e hígado en el restante, como LNH primarios, de alto grado y de fenotipo "B". Todos los pacientes presentaron síntomas "B" al momento del diagnóstico. De acuerdo con los criterios de estadificación de Lugano, 4 se encontraban en el estadio I, 2 pertenecían al IIa y uno al III y al IV, respectivamente. El linfoma de duodeno fue el único de tipo Burkitt en esta serie y se detectó el genoma del virus de Epstein-Barr en las muestras de biopsias del tumor, así como también en el que comprometió el hígado. Cuatro pacientes recibieron tratamiento con quimioterapia sistémica más factor estimulante de colonias de granulocitos y TARGA; 2 de ellos (cavum y uno de los de colon tienen una sobrevida prolongada con reconstitución inmune luego de 5 y 6 años del diagnóstico, respectivamente. La mediana de supervivencia de los pacientes tratados con TARGA más quimioterapia fue de 33 meses. La mediana de supervivencia de los otros pacientes fue de 90 días. Conclusión: los LNH del tracto gastrointestinal son una grave complicación de la enfermedad VIH/SIDA avanzada. El diagnóstico precoz seguido del tratamiento combinado de quimioterapia más TARGA mejora el pronóstico y la supervivencia de estos pacientes.

Marcelo Corti

2006-01-01

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Linfomatosis intravascular cerebral como causa de demencia rápidamente progresiva: Reporte de un caso / Cerebral intravascular lymphomatosis as cause of subacute dementia: Report of a case  

Scientific Electronic Library Online (English)

Full Text Available SciELO Chile | Language: Spanish Abstract in spanish La linfomatosis intravascular cerebral es un tipo de Linfoma no Hodgkin generalmente de células B, de presentación infrecuente, curso clínico progresivo y fatal. El daño vascular es producto de oclusión de vasos de pequeño calibre por infiltración tumoral, con resultado de múltiples infartos. Las ma [...] nifestaciones neurológicas suelen ser la forma de presentación clínica inicial, caracterizadas por un amplio espectro que incluye encefalopatía subaguda, deterioro cognitivo, delirio, afasia, hemiparesia, trastornos visuales, paraplejia, parestesias y compromiso de pares craneanos. Los estudios de RNM evidencian alteraciones indistinguibles de las vasculitis del SNC. La linfomatosis intravascular debe considerarse en el diagnóstico diferencial de las demencias rápidamente progresivas y en los cuadros de multi infarto cerebral de pequeño vaso de etiología inusual y recurrente. Se presenta el caso de un paciente con demencia rápidamente progresiva, con manifestaciones neurológicas de deterioro cognitivo y enfermedad sistémica. El compromiso del SNC se expresó como encefalopatía subaguda con confusión, agitación, y crisis convulsivas, trastornos motores con reflejo cutáneo plantar extensor bilateral y compromiso cerebeloso, de curso clínico sintomático progresivo, con baja de peso y fiebre fluctuante. El paciente fue sometido a tratamiento con metilprednisolona a pesar del cual falleció. El estudio necrópsico demostró alteraciones por Linfoma no Hodgkin difuso de células B, variante intra vascular, con compromiso del cerebro, cerebelo, glándulas suprarrenales, páncreas, miocardio, tiroides, pulmón riñón e hígado. Abstract in english Cerebral Intravascular Lymphomatosis is a type of non Hodgkin Lymphoma, generally composed with B cells, its ocurrence is infrequent, clinically progressive and has a fatal course. Vascular damage is related with tumoral infiltration and small caliber occlusion, with results in multi infarcts. Neuro [...] logical symptoms and signs are frequently the first clinical manifestation, which include sub acute encephalopathy, cognitive impairment, delirium, aphasia, hemipharesis, visual disturbances, paraplegia, paresthesia and cranial nerves involvement. MRI shows images of vasculitis from CNS. Cerebral Intravascular Lymphomatosis must be considered in differential diagnosis of rapid and subacute dementias, and clinical cases with small vessel recurrent multi infarct of unusual etiology. We present the clinical case of a patient with rapid progressive dementia and systemic disease manifestation. The CNS involvement was characterized as a subacute encephalopathy, with confusion and agitation, seizures, motor disturbances, bilateral plantar extensor reflexes and cerebellar signs. The clinical symptomatic course was progressive, with weight loss and fluctuant fever. The patient had a fatal course after he was treated with Methylprednisolone. Postmortem pathologic examination revealed a diffuse non Hodgkin lymphoma of B cells, intravascular variant, with brain compromise, cerebellum, suprarenal glands, pancreas, myocardium, thyroid gland, lung kidney and the lever.

Paula, Jiménez P; Oscar, Jiménez L; Pía, García F.

2013-03-01

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Transfusión intrauterina intravascular  

Scientific Electronic Library Online (English)

Full Text Available SciELO Venezuela | Language: Spanish Abstract in spanish 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 transfusion [...] es 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. Abstract in english 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 200 [...] 2. 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.

2006-06-01

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LINFOMA NO HODGKIN PRIMARIO DE LA MAMA  

Directory of Open Access Journals (Sweden)

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

2003-01-01

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Linfoma primario de cavidades / Primary effusion lymphoma  

Scientific Electronic Library Online (English)

Full Text Available SciELO Spain | Language: Spanish 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. Prese [...] ntamos 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.

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

2006-09-01

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Linfoma MALT en diferentes localizaciones / MALT lymphoma in different locations  

Scientific Electronic Library Online (English)

Full Text Available SciELO Cuba | Language: Spanish 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 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 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.

2012-03-01

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Linfoma de Burkitt abdominal / Abdominal Burkitt lymphoma  

Scientific Electronic Library Online (English)

Full Text Available SciELO Cuba | Language: Spanish Abstract in spanish El linfoma de Burkitt es un tipo de linfoma no Hodgkin, infrecuente, que afecta principalmente a niños y adolescentes. Se presenta un adolescente masculino, blanco, de 12 años de edad y antecedentes de salud anterior, con un dolor en epigastrio, tipo cólico de pocos días de evolución, que fue increm [...] entándose, sin modificaciones con la tos, estornudos o cambios de posición ni preferencia de horario, irradiado a fosa ilíaca derecha, sin vómitos, fiebre u otra sintomatología. Se realizan estudios imagenológicos, endoscópicos e histológicos, diagnosticándole un tumor de colon, es intervenido quirúrgicamente. El linfoma de Burkitt es una rara entidad que necesita de la clínica y la combinación de varios métodos de imagen para aproximarse a la sospecha diagnóstica y representa un gran desafío, por lo que alertamos a los pediatras a sospecharlo ante los dolores abdominales y tumoraciones de abdomen. Abstract in english Burkitt's lymphoma is a type of uncommon non-Hodgkin lymphoma, affecting mainly children and adolescents. A white male teen, 12 years of age, presents with previous health record, epigastric pain, cramping of some days of length, which was increasing, unchanged coughing, sneezing or changes in posit [...] ion, irradiated to the right iliac fossa, without vomiting, fever or other symptoms. Imaging, endoscopic and histological studies were performed. He was diagnosed with a colon tumor, removed later on. Burkitt lymphoma is a rare entity that requires clinical observation and combining several imaging methods to come close to the suspected diagnosis, and represents a big challenge, so we alert pediatricians to suspect of abdominal pain and abdominal tumors.

José Ridal, González Álvarez; Miguel Ángel, Rodríguez Hernández; Alfredo, Cruz Cordero; Zenia, Rodríguez Hernández; Emilio Andrés, Rodríguez Ramirez.

2014-04-01

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Linfoma angiocéntrico centrofacial / Centrofacial angiocentric lymphoma  

Scientific Electronic Library Online (English)

Full Text Available SciELO Spain | Language: Spanish 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 aproximadamente(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 (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.

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

2005-02-01

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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

2000-06-01

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Linfoma não Hodgkin gástrico / Gastric non-Hodgkin Lymphoma  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese 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 gástric [...] os 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. 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 asso [...] ciated 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.

2010-02-01

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Linfoma não Hodgkin gástrico Gastric non-Hodgkin Lymphoma  

Directory of Open Access Journals (Sweden)

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

2010-02-01

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LINFOMA NO HODGKIN PRIMARIO DE LA MAMA  

Scientific Electronic Library Online (English)

Full Text Available SciELO Chile | Language: Spanish 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 e [...] stablish 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.

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Manifestaciones pulmonares en pacientes con linfomas  

Scientific Electronic Library Online (English)

Full Text Available SciELO Cuba | Language: Spanish 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 s [...] íntomas 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 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 re [...] spiratory 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

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

2002-04-01

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Dosimetry in intravascular brachytherapy  

International Nuclear Information System (INIS)

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)

48

Intravascular blood coagulation after irradiation  

International Nuclear Information System (INIS)

The problems of activation of intravascular blood coagulation (JVBC) at different stages after irradiation, are considered. JVBC peculiarities (disseminated intravascular syndrome (DIV) or thrombo hemorrhagic syndrome) are investigated. Literature on alterations which take place in the organism under effect of ionizing irradiation is analyzed. This analysis proves the characteristic features of thrombinogenesis activation and development of DIV syndrome not only in the early post-radiation period, but in the middle of radiation disease, as well. It is also shown that ionizing radiation activizes the hemocoagulation process and causes IVBC in the case of both local and general irradiation

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Linfoma Primário das Cavidades em Doente com Infecção VIH  

OpenAIRE

O linfoma primário das cavidades é um subtipo de linfoma não-Hodgkin (LNH), de ocorrência rara, prognóstico muito reservado, mais frequentemente descrito em indivíduos imunodeprimidos, em particular no contexto de infecção pelo vírus da imunodeficiência humana (VIH), no qual as células malignas proliferam exclusivamente nas cavidades serosas e que está associado ao vírus herpes humano tipo 8 (VHH8). Os autores apresentam o caso de um doente com infecção VIH, internado ...

Gouveia, S.; Castro, M.; Correia, R.; Germano, I.; Farrajota, F.

2012-01-01

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

OpenAIRE

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 l...

Fernando Areces Delgado; Delvys Rodríguez Abreu

2003-01-01

51

Uropatía obstructiva bilateral como forma de presentación de linfoma vesical primario / Bilateral obstructive uropathy as clinical presentation of primary bladder lymphoma  

Scientific Electronic Library Online (English)

Full Text Available SciELO Spain | Language: Spanish Abstract in spanish Objetivo: Dar a conocer un caso de presentación atípica de linfoma vesical primario tratado en nuestro hospital, así como revisar la bibliografía de este tipo de tumores, que representan el 0.2% de los tumores vesicales, siendo su forma de presentación más frecuente la hematuria macroscópica con coá [...] gulos. Métodos: Presentamos el caso de un varón de 83 años, que acudió a Urgencias por oligoanuria de 48h de evolución, en el que se diagnosticó un tumor vesical. Resultados: La anatomía patológica resulto ser un linfoma vesical primario de células B. Conclusiones: El linfoma vesical primario es una entidad poco frecuente, que cursa de forma indistinguible a otros tumores vesicales, presentando una buena respuesta al tratamiento con quimioterapia. Abstract in english Objective: We report the event of an atypical presentation of primary bladder lymphoma, treated in our hospital, and review the literature of such tumors, representing 0,2% of bladder tumors, being macroscopic hematuria with clots the most frequent reason for patient consultation. Methods: We report [...] the case of an 83 years old man who went to the emergency room because of oligoanuria of 48 hours of evolution. He was diagnosed of bladder tumor. Results: The pathology turned out to be a primary bladder lymphoma cell B. Conclusions: Primary bladder lymphoma is a rare entity that presents a similar behaviour to other bladder tumors, having a good response to treatment with chemotherapy.

David, Hernández Alcaraz; José A., Gómez Pascual; Jorge, Soler Martínez; Raúl, Vozmediano Chicharro; Pedro, Morales Jiménez; Eloy, Vivas Vargas; Víctor, Baena González.

2009-04-01

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Linfomas extranodales en el Área Metropolitana de Bucaramanga: 2000-2004  

OpenAIRE

Antecedentes: Los linfomas extranodales (LEN) se localizan en cualquier sitio diferente a los ganglios linfáticos, como el tracto gastrointestinal (TGI) y la piel; la mayoría son de tipo linfoma no Hodgkin (LNH). Representan entre el 25-45% de todos los LNH, y el subtipo histopatológico más frecuente corresponde a linfoma difuso de células B grandes (LDCBG). El objetivo de este estudio es identificar algunas características socio-demográficas de los pacientes con linfomas extranodales ...

Claudia Janeth Uribe Pe?rez, Md Carlos Alberto Garci?a Rami?rez

2009-01-01

53

Linfoma metastásico cardíaco / Metastatic Cardiac Lymphoma  

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: Spanish 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 leucosi [...] s 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 ecocardiográfica 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 a [...] rrhythmia and echocardiographic evidence of a rapidly growing heart tumor. Treatment with systemic corticosteroids was initiated due to symptoms aggravation and the patient improved 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.

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

2011-04-01

54

SEPSIS Y COAGULACIÓN INTRAVASCULAR DISEMINADA  

OpenAIRE

La coagulación intravascular diseminada se presenta en el contexto de numerosas situaciones clínicas de las cuales la sepsis es la más común, particularmente la de origen bacteriana. Se analizaron las principales características del factor tisular y su participación en el inicio de la coagulación durante la endotoxemia. Se revisó el papel fisiopatológico y terapéutico del sistema de la proteína C en la modulación de la coagulación y de la respuesta inflamatoria durante la coagula...

Carlos Miguel Sarduy Ramos; Rez, Judit Rodr U. Edguez P. U. E.; Lvarez Hidalgo, Roberto U. C.; Eda, Jos U. E. L. Machado Garc U.

2004-01-01

55

Hypothesis: disseminated intravascular inflammation as the inflammatory counterpart to disseminated intravascular coagulation.  

OpenAIRE

We have identified a leukocyte activation syndrome that is occasionally associated with the transfusion of intraoperatively recovered erythrocytes. This syndrome appears to result from intravascular damage caused by leukocytes activated during the erythrocyte salvage process. We hypothesize that this syndrome is part of a larger disease grouping: disseminated intravascular inflammation (DII). DII is the analog of the coagulation disorder disseminated intravascular coagulation. In disseminated...

Bull, B. S.; Bull, M. H.

1994-01-01

56

Linfoma de celulas B de la zona marginal extraganglionar del tejido linfoide asociado a mucosa (linfoma MALT de pulmón  

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Full Text Available Los Linfomas Pulmonares Primarios son extremadamente raros (0,4% de los linfomas extraganglionares, y generalmente son de tejido linfoide asociado a mucosas (tipo MALT, con ocasionales linfomas de células grandes difusos. Los síntomas son inespecíficos, y casi la mitad de los pacientes son asintomáticos. Se presenta el caso de un paciente masculino de 56 años de edad, quien presentó durante 7 meses accesos diarios de tos seca, de predominio nocturno, asociados en el último mes a fiebre de 39ºC, disnea a medianos esfuerzos y expectoración verduzca. Los exámenes de laboratorio fueron normales. La radiografía de tórax mostró el mediastino ensanchado, un proceso en lóbulo medio con efecto atelectásico, y un nódulo en hemitórax izquierdo. La tomografía computarizada (TC torácica de alta resolución evidenció proceso alveolar derecho en lóbulo medio y un nódulo pulmonar izquierdo calcificado de tipo inespecífico. El estudio inmunohistoquímico de la biopsia pulmonar fue compatible con Linfoma de Células B de la zona marginal extraganglionar del tejido linfoide asociado a mucosa (Linfoma MALT de pulmón. La TC corporal y la Tomografía por Emisión de Positrones (PET evidenciaron importantes hallazgos complementarios para determinar la extensión de la enfermedad. El paciente se trato con quimioterapia y actualmente se encuentra en buenas condiciones, sin recidiva de la sintomatología. Dado lo infrecuente de la patología se presenta este caso y se hace una revisión de la literatura

Carlos Vergara-Uzcategui

2014-09-01

57

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

2006-12-01

58

Linfoma no Hodgkin extraganglionar. Reporte de un caso  

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Full Text Available 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.

Jos\\u00E9 Ignacio Larquin Comet

2008-01-01

59

Tejido linfoide y linfomas gástricos / Lymphoid tissue and gastric lymphomas  

Scientific Electronic Library Online (English)

Full Text Available SciELO Colombia | Language: Spanish Abstract in spanish 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. [...] Abstract in english 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.

2010-12-30

60

Spontaneous intravascular platelet aggregation in angiographic studies  

Energy Technology Data Exchange (ETDEWEB)

The process of intravascular platelet aggregation is activated in angiographic clinical studies using 76% Verografin solution. It has been shown in experiments of rats that verografin (2 ml/kg) and iodamide (2 ml/ kg) together with the activation of intravascular platelet aggregation inhibit antiaggregation properties of the vascular wall.

Tsyb, A.F.; Sushkevich, G.N.; Drozdovskij, B.Ya.; Lyasko, L.I.; Grishin, G.N. (Akademiya Meditsinskikh Nauk SSSR, Obninsk. Nauchno-Issledovatel' skij Inst. Meditsinskoj Radiologii)

1983-01-01

61

Spontaneous intravascular platelet aggregation in angiographic studies  

International Nuclear Information System (INIS)

The process of intravascular platelet aggregation is activated in angiographic clinical studies using 76% Verografin solution. It has been shown in experiments op rats that verografin (2 ml/kg) and iodamide (2 ml/ kg) together with the activation of intravascular platelet aggregation inhibit antiaggregation properties of the vascular wall

62

Incidencia de linfoma gastrointestinal en el hospital militar Dr. Carlos Arvelo en el lapso 2003-2008 un período de 5 años  

Scientific Electronic Library Online (English)

Full Text Available SciELO Venezuela | Language: Spanish Abstract in spanish Los Linfomas No Hodgkin del tracto gastrointestinal son los linfomas extranodales más comunes, representando entre el 30 y 70% de esta última patología constituyendo un grupo heterogéneo de tumores con diferentes características clínicas y patológicas. El estómago está lesionado de manera predominan [...] te siendo los linfomas tipo MALT los tumores de bajo grado más frecuentes en el sistema gastrointestinal, contando con 40% de todos los linfomas gástricos primarios, manteniéndose localizados por períodos prolongados sin tratamiento. Objetivos: evaluar la epidemiología de los linfomas gastrointestinales en nuestro centro. Pacientes y métodos: Análisis retrospectivo de las historias de pacientes con diagnóstico de Linfoma Gastrointestinal. Resultados: Se presentan datos clínicos e histopatológicos de 20 pacientes con diagnóstico de Linfoma Gastrointestinal tratados en el Hospital Militar "Dr. Carlos Arvelo", Caracas, Venezuela, desde 2003 a 2008. 15 hombres, 5 mujeres, con edades comprendidas entre 23 y 64 años. De ellos, 14 (70 %) se presentaron con enfermedad limitada (estadio I-II) mientras que 6 (30%) tuvieron lesión de varios órganos (hígado, páncreas, bazo, duodeno) o más de un órgano gastrointestinal, siendo clasificado como estadio IV. 11 pacientes tuvieron linfoma gástrico, 2 de páncreas, 1 hepático esplénico y de columna lumbar, 1 intestino delgado, 1 en bazo, 4 de colon, y en 5 pacientes se observaron multiples localizaciones en el sistema gastrointestinal. Dolor abdominal, hemorragia digestiva, pérdida de peso fueron los síntomas más frecuentes de presentación. El estómago fue el órgano mas frecuentemente lesionado. Abstract in english Non-Hodgkin´s lymphomas (NHL) of the gastrointestinal (GI) tract are the most common extra nodal lymphomas. They represent between 30% to 70% of all extra nodal lymphomas and constitute a heterogeneous group of tumors with different clinical and pathological features. The stomach is predominantly in [...] volved. MALT type lymphomas are the most frequent low grade non-Hodgkin´s lymphomas encountered in the GI tract. They account for 40% of all primary gastric lymphomas and remain, in the majority of cases, localized for a prolonged period of time without therapy. Aim: To evaluate the epidemiology of gastrointestinal lymphomas in our Hospital. Patients and Methods: Retrospective analysis of patientÊs recorders performed at the Hospital Militar "Dr. Carlos Arvelo", Caracas, that had the diagnosis of gastrointestinal lymphoma. Results Clinical and histopathologjcal data from 20 patients presenting with GI-NHL treated from 2003 until 2008, were reviewed. 15 men, 5 women with an age range between 23 and 64 years old. Of these, 14 (70%) presented with limited disease (stage I and II), while 6 patients were found to have disease involvement of other abdominal organs (i.e., liver, pancreas, spleen, duodenum) or more than one gastrointestinal site and were therefore classified as stage IV. 11 patients presented with lymphoma in the stomach, 2 pancreatic, 1 in liver, spleen and lumbar vertebrae, 1 in the small intestine and 4 in the large bowel, while in 5 cases multiple localizations of the gastrointestinal tract were documented. Abdominal pain, gastrointestinal bleeding, weighs loose were the main presenting symptom.

Beatriz, Pernalete; María Alejandra, La Cruz; Livia, Rodríguez; Sylvia, Benítez; Oscar, Pérez; Rosanna, Bonardo; Noheltriz, Camaray; Francisco, Guzman; Lorena, Villarreal; Jacinto, Lara.

2009-12-01

63

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

2013-02-01

64

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 Carolina Ituarte

2005-01-01

65

O papel da Fludarabina no tratamento dos linfomas não Hodgkin de baixo grau de malignidade  

OpenAIRE

Dentro das perspectivas futuras do tratamento dos linfomas não Hodgkin (LMH) está aquela de melhorar os resultados com os denominados linfomas de baixo grau de malignidade. Dentro do estado-da-arte atual, este grupo de linfomas pode ser considerado incurável. Desde o observar-e-esperar até o transplante alogênico de medula óssea, muitas dúvidas existem e devem ser esclarecidas. O objetivo desta revisão é de apresentar e discutir a utilização da Fludarabina , isolada ou associada à...

Santini Gino; Souza Cármino A.

2001-01-01

66

Acute Disseminated Intravascular Coagulation in Neuroendocrine Carcinoma  

Science.gov (United States)

Malignancy is a common cause of disseminated intravascular coagulation and usually presents as a chronic disorder in solid organ tumours. We present a rare case of recurrent acute disseminated intravascular coagulation in neuroendocrine carcinoma after manipulation, firstly, by core biopsy and, later, by cytotoxic therapy causing a release of procoagulants and cytokines from lysed tumour cells. This is reminiscent of tumour lysis syndrome where massive quantities of intracellular electrolytes and nucleic acid are released, causing acute metabolic imbalance and renal failure. This case highlights the potential complication of acute disseminated intravascular coagulation after trauma to malignant cells. PMID:23139666

Teh, Ru-Wen; Tsoi, Daphne T.

2012-01-01

67

Estudio histológico e inmunofenotípico de linfoma canino en el centro de México  

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Full Text Available El inmunofenotipo constituye un factor importante en el pronóstico del linfoma canino. Se ha demostrado que perros con linfoma de células B presentan tiempos de sobrevivencia más largos que los perros con linfoma de células T. Los antígenos CD3 y CD79a son los marcadores más utilizados en inmunohistoquímica para la determinación del fenotipo celular T y B, respectivamente, en muestras fijadas en formalina y conservadas en bloques de parafi na. En este estudio se describen las características morfológicas e inmunofenotípicas de 31 casos de linfoma en México, de casos del archivo del Departamento de Patología de la Facultad de Medicina Veterinaria y Zootecnia de la Universidad Nacional Autónoma de México. Para la clasificación histológica se utilizó el sistema del National Cancer Institute-Working Formulation (NCI-WF. Catorce casos (45.16% correspondieron a células B, 15 (48.39% a células T, y dos (6.45% fueron de origen indeterminado. Histopatológicamente, el linfoma difuso de células grandes fue el tipo más común, representó 38.71% de los casos; le siguieron los siguientes linfomas: linfocítico, inmunoblástico y linfoblástico. Los linfomas de grado intermedio a alto representaron 77.42% de los casos. En este estudio se encontró mayor prevalencia de linfoma de células T. Los resultados en este trabajo pudieran indicar una diferencia en la prevalencia en el inmunofenotipo del linfoma canino en México, en relación con otras zonas geográficas.

Francisco J. \\u00C1lvarez Berger

2009-01-01

68

Primary lymphoma of the colon / Linfoma primario de colon  

Scientific Electronic Library Online (English)

Full Text Available SciELO Spain | Language: English 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 li [...] nfoma 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. 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 of [...] ten 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.

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

2013-02-01

69

Hepatic angiosarcoma associated with disseminated intravascular coagulation  

OpenAIRE

We present a case of hepatic angiosarcoma that presented with disseminated intravascular coagulopathy to highlight the difficulty in diagnosing this disease due its aggressive clinical course, the overlapping features of various coagulopathies, and the nonspecific appearance of angiosarcomas on imaging.

Mazharuddin, Samir; Podduturi, Varsha; Guileyardo, Joseph M.; Cooper, Barry

2015-01-01

70

Disseminated intravascular coagulation with Fusobacterium necrophorum septicaemia.  

OpenAIRE

A 23 year old woman died within six hours of admission from acute disseminated intravascular coagulation. Fusobacterium necrophorum, a Gram negative anaerobic organism, was isolated as a single pathogen from the blood cultures. This association has not previously been reported.

Potter, M. N.; Drysdale, H. C.; Price, P. A.; Buck, A. C.

1988-01-01

71

Acute Disseminated Intravascular Coagulation in Neuroendocrine Carcinoma  

OpenAIRE

Malignancy is a common cause of disseminated intravascular coagulation and usually presents as a chronic disorder in solid organ tumours. We present a rare case of recurrent acute disseminated intravascular coagulation in neuroendocrine carcinoma after manipulation, firstly, by core biopsy and, later, by cytotoxic therapy causing a release of procoagulants and cytokines from lysed tumour cells. This is reminiscent of tumour lysis syndrome where massive quantities of intracellular electrolytes...

Teh, Ru-wen; Tsoi, Daphne T.

2012-01-01

72

Remote Temperature Estimation in Intravascular Photoacoustic Imaging  

OpenAIRE

Intravascular photoacoustic (IVPA) imaging is based on the detection of laser-induced acoustic waves generated within the arterial tissue under pulsed laser irradiation. Generally, laser radiant energy levels are kept low (20 mJ/cm2) during photoacoustic imaging to conform to general standards for safe use of lasers on biological tissues. However, safety standards in intravascular photoacoustic imaging are not yet fully established. Consequently, monitoring spatio-temporal temperature changes...

Sethuraman, Shriram; Aglyamov, Salavat R.; Smalling, Richard W.; Emelianov, Stanislav Y.

2008-01-01

73

Asociación de linfomas malignos con herpes virus I y II  

Scientific Electronic Library Online (English)

Full Text Available SciELO Peru | Language: Spanish Abstract in spanish Objetivos: Conocer la prevalencia de la seropositividad para herpes virus I y II en pacientes con linfomas non Hodgkin y su asociación con el linaje celular (B ó T). Pacientes y métodos: Se tomó una muestra de 60 pacientes en el Hospital Almenara de agosto de 1999 a diciembre del 2000 todos ellos pa [...] cientes con diagnostico establecido de linfoma non Hodgkin nuevos o en primera recaída, el análisis se realizó mediante bioestadística descriptiva. Resultados: La mediana de la edad fue de 59 años, 2/3 fueron varones, 65% pacientes nuevos y el linfoma primario fue extraganglionar en un 58% de los casos. El 80% de los linfomas fueron a células B y mas del 90% en estadios avanzados (III y IV), ningún caso fue positivo para IgM herpes I o II y 25% tuvieron serología positiva IgG para herpes I o II (2/3 positivos para IgG I) de los cuales el 93% fueron a células B. Conclusiones: La prevalencia de seropositividad para herpes virus I y II en pacientes con linfoma non Hodgkin es del 25%, mayormente asociado a células B, además de tener un porcentaje considerable de linfomas a células T (25%) y linfomas extranodales (58%); para evaluar la posibilidad de asociación entre este virus y los linfomas requerimos de un estudio caso-control. Abstract in english Objectives: To know the prevalence of seropositivity for herpes virus I and II in patients with malignant non Hodgkin lymphoma (NHL), and the association with the cell lineage (B or T). Patients and Methods: We considered 60 new or in first recurrence patients with NHL at the Hospital Nacional Guill [...] ermo Almenara from August 1999 to December 2000. We analyzed the data by descriptive biostatistics in Epi-Info program. Results: Median age was 59 years, two thirds were men, 65% were new patients and the primary site was extranodular in 58% of the cases. 80% were NHL to B cells, and more than 90% in advance stage (III and IV), none of them were positive for IgM herpes virus I or II and 25% were positive for IgG I or II (2/3 positive for IgG I) and more than 90% of them were for B cell. Conclusion: The prevalence of seropositivity for herpes I or II in patients with NHL was 25%, usually associated to B cells, on the other hand we have an elevated percentage of T cell NHL (25%) as well as extranodular NHL (58%). We need more studies specially a case-control study to define the association of herpes virus I or II with NHL.

Ashley Efraín, Alarcon-Rozas; Fernando, Salas Sánchez; Karina, Villacres Vela; Julio, Guevara Guevara.

2002-04-01

74

Linfoma de Hodgkin: aspectos atuais / Hodgkin lymphoma: current issues  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese Abstract in portuguese 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). Abstract in english 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.

2009-08-01

75

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 SciELO Chile | Language: Spanish 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 estud [...] iada 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. 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 bo [...] th 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.

76

ENFERMEDAD RENAL POLIQUISTICA ASOCIADA A LINFOMA EXTRANODAL EN UN CANINO  

OpenAIRE

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 alo...

Diego Echeverry B; Ximena Barbosa S; Edwin Buriticá G

2006-01-01

77

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.

2008-07-01

78

Linfoma de Burkitt en un portador de granulomatosis de Wegener  

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Full Text Available Se reporta el caso de un paciente costarricense portador de granulomatosis de Wegener, en tratamiento con ciclofosfamida y prednisona, quien desarrolla un linfoma de Burkitt que lo lleva a la muerte. Se menciona la posible relación entre estas dos patologías.This is a report of a costarrican male with Wegener' s granulomatosis undergoing treatment with prednisone and cyclophosphamide, he developed a fatal Burkitt' s lymphoma. The possible relationship between these two disorders is addressed.

Kryssia Rodríguez-Castro

2005-10-01

79

MALT-linfoma de cérvix: reporte de caso  

OpenAIRE

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...

Inés Benedetti P; Lía Barrios G; Eusebio Contreras B

2012-01-01

80

Acantosis nigricans y linfoma no Hodgkin: presentación de un caso  

OpenAIRE

Fundamento: la acantosis nigricans fue la primera dermatosis en la que se reconoció un carácter paraneoplásico. La característica sobresaliente es la hiperpigmentación simétrica y el engrosamiento aterciopelado de la piel. Se sugiere que algún factor producido por el tumor estimula el crecimiento epidérmico. Objetivo: presentar un caso poco frecuente de un paciente con el diagnóstico de linfoma no Hodgkin y acantosis nigricans. Caso clínico: se presenta el caso de un paciente mascul...

Junco Bonet, Miguel Dami U. E. N.; Ignacio Larquin Comet, Jos U. E.

2014-01-01

81

Actualidad clínica-biológica de los linfomas T cutáneos  

Directory of Open Access Journals (Sweden)

Full Text Available 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 linfomas 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.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 does 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.

María E. Faxas García

2003-03-01

82

Acantosis nigricans y linfoma no Hodgkin: presentación de un caso  

Directory of Open Access Journals (Sweden)

Full Text Available Fundamento: la acantosis nigricans fue la primera dermatosis en la que se reconoció un carácter paraneoplásico. La característica sobresaliente es la hiperpigmentación simétrica y el engrosamiento aterciopelado de la piel. Se sugiere que algún factor producido por el tumor estimula el crecimiento epidérmico. Objetivo: presentar un caso poco frecuente de un paciente con el diagnóstico de linfoma no Hodgkin y acantosis nigricans. Caso clínico: se presenta el caso de un paciente masculino de 62 años de edad con antecedentes de hipertensión arterial que un año previo a su ingreso manifestó cambios en la coloración de la piel, dermatosis generalizada, hiperpigmentación e hiperqueratosis en las palmas de las manos y el cuello. Conclusiones: el tumor más frecuente asociado con acantosis es el adenocarcinoma abdominal en 90 % de los casos, entre los cuales 64 a 69 % son de origen gástrico; el resto (10 % se asocian con cáncer no digestivo; linfoma de Hodgkin, micosis fungoide, cáncer de esófago, próstata y tiroides. En el linfoma no Hodgkin su asociación es considerada muy rara y son pocos los casos reportados en la bibliografía.

Miguel Dami\\u00E1n Junco Bonet

2014-01-01

83

[Literature review of intravascular lymphomatosis].  

Science.gov (United States)

Intravascular lymphoma (IVL) is a rare form of malignant lymphoma characterized by the selective growth of lymphoma cells within the lumina of vessels, without the involvement of adjacent parenchymal tissue. IVL is predominantly of B-cell lineage, but cases of T-cell or natural killer cell lineage have been described occasionally, predominantly involving the skin. IVL usually affects elderly patients with a poor performance status, elevated serum lactic dehydrogenase levels, anemia, and B symptoms. The clinical presentation varies in different geographical areas, particularly between patients diagnosed in Europe and Asia. In European countries, the Western variant of IVL mainly involves the central nervous system and skin; in particular, there is a "cutaneous variant" limited to the skin. In Asian countries, the Asian variant of IVL predominantly accompanies hemophagocytic syndrome. Identification of this disease is difficult because it presents with non-specific clinical symptoms. Although organ biopsies are mandatory for accurate IVL diagnosis, no standard procedure has been established. An additional random skin biopsy may be useful to diagnose IVL at an early stage. Early diagnosis and treatment can improve the outcome of IVL patients following treatment with rituximab-containing chemotherapy. PMID:25082315

Koyano, Shigeru; Hashiguchi, Shunta; Tanaka, Fumiaki

2014-08-01

84

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

85

Intravascular Stenting in Microvascular Anastomoses  

DEFF Research Database (Denmark)

Background?The effect of intravascular stenting (IVaS) on microvascular anastomoses has given adverse results. For experienced microsurgeons the benefit of IVaS is doubtful. We have investigated the potential benefit of the IVaS technique for two groups of inexperienced microsurgeons with different surgical levels of experience (medical students and young residents). Experienced microsurgeons acted as a control group. Materials and Methods?In an experimental crossover study, 139 microsurgical anastomoses were performed on the femoral artery in 70 rats by 10 surgeons. On one side of the rat, the IVaS technique was used. A small piece of 5-0 nylon monofilament was placed in the vessel lumen, acting as a temporary stent during microvascular anastomosis. A conventional technique without the stent was performed on the other side. Patency rates of the vessels in each group were compared as well as the time spent on the anastomosis. Results?No significant difference in patency rates was seen between the stenting andconventional technique in all three groups. The experienced microsurgeons had 100% patency rate with both techniques. The medical students had 20/28 in the IVaS and 19/28 conventional group and the patency rates for the residents were 23/27 using IVaS and 23/28 using the conventional technique. The residents were faster using the IVaS whereas the students and experienced microsurgeons were faster without the stent. Conclusion?The IVaS technique did not seem to benefit either the inexperienced or experienced microsurgeons regardless of their clinical experience. The study also shows that some surgical experience seems to be an advantage in performing microsurgery.

Assersen, Kristine; SØrensen, Jens

2014-01-01

86

Leucemia / linfoma T del adulto: Primer caso en Cuba  

Directory of Open Access Journals (Sweden)

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-IThe 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

2003-06-01

87

Linfomas não-Hodgkin extraganglionares: uma análise retrospectiva  

OpenAIRE

Na maioria dos linfomas não-Hodgkin (LNH), o envolvimento extra-ganglionar surge durante o curso da doença. Contudo alguns LNH têm origem em locais que não os gânglios linfáticos ou o baço, sendo designados por LNH extra-ganglionares. Este estudo tem como objectivo ilustrar as características clínico-patológicas dos doentes com LNH extra-ganglionares primários (LNH-EP). Foram avaliados 125 casos de LNH, dos quais 37 (30%) foram considerados LNH-EP. A proporção entre os sexos foi ...

Trindade, I.; Almeida, M.; Coimbra, F.; Portela, C.; Esperanc?a, S.; Marques, H.

2011-01-01

88

Linfoma de Burkitt en un portador de granulomatosis de Wegener  

Scientific Electronic Library Online (English)

Full Text Available SciELO Costa Rica | Language: Spanish Abstract in spanish Se reporta el caso de un paciente costarricense portador de granulomatosis de Wegener, en tratamiento con ciclofosfamida y prednisona, quien desarrolla un linfoma de Burkitt que lo lleva a la muerte. Se menciona la posible relación entre estas dos patologías. [...] Abstract in english This is a report of a costarrican male with Wegener' s granulomatosis undergoing treatment with prednisone and cyclophosphamide, he developed a fatal Burkitt' s lymphoma. The possible relationship between these two disorders is addressed. [...

Kryssia, Rodríguez-Castro; Henry, Zamora-Barquero.

2005-10-01

89

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 SciELO Brazil | Language: Portuguese 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 adulto [...] s 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). 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 involvin [...] g 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.

2012-04-01

90

Disseminated intravascular coagulation: old disease, new hope  

OpenAIRE

Disseminated intravascular coagulation has long been associated with increased mortality in patients with sepsis. An effective treatment is now available, and the authors of this review describe how improved understanding and earlier diagnosis could lead to targeted treatment and improved prognosis

Toh, Cheng Hock; Dennis, Michael

2003-01-01

91

Ulcerative colitis complicated by disseminated intravascular coagulation.  

OpenAIRE

We report a case of chronic ulcerative colitis complicated by clinical evidence of disseminated intravascular coagulation and pathological evidence of intestinal ischaemia secondary to venular and capillary fibrin thrombi. This may well represent an example of univisceral Shwartzman reaction occurring in a sensitized target organ.

Muller, S.; Chesner, I. M.; Sheridan, J.; Newman, J.

1987-01-01

92

Hepatic angiosarcoma associated with disseminated intravascular coagulation  

Science.gov (United States)

We present a case of hepatic angiosarcoma that presented with disseminated intravascular coagulopathy to highlight the difficulty in diagnosing this disease due its aggressive clinical course, the overlapping features of various coagulopathies, and the nonspecific appearance of angiosarcomas on imaging. PMID:25552799

Podduturi, Varsha; Guileyardo, Joseph M.; Cooper, Barry

2015-01-01

93

Estudio del reordenamiento del oncogén BCL-2 y otros factores pronósticos en linfomas foliculares.  

OpenAIRE

[cat] El linfoma folicular (LF) es el segundo subtipo más frecuente de linfoma no hodgkiniano (LNH). Pese a que los pacientes con LF presentan una mediana de supervivencia relativamente prolongada, en la mayoría de los casos ésta sigue siendo una enfermedad incurable, sin que exista un tratamiento que se pueda considerar el estándar. Algunos de los tratamientos con mayores posibilidades de alcanzar una respuesta prolongada se acompañan de una toxicidad considerable. Es por ello que el co...

Montoto Almirall, Silvia

2005-01-01

94

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

OpenAIRE

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...

Arau?jo Filho, Bernardo C.; Sakae, Flavio A.; Lessa, Marcus M.; Das Neves, Maura C.; Voegels, Richard L.; Ossamu Butugan

2004-01-01

95

Linfoma primário do sistema nervoso central Primary central nervous system lymphoma  

OpenAIRE

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...

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

2008-01-01

96

Estratificação de risco em linfoma difuso de grandes células B Risk stratification of large B-cell lymphomas  

OpenAIRE

O linfoma difuso de grandes células B (LDGCB) é uma entidade clínico-patológica heterogênea que corresponde de 30% a 35% dos casos de linfoma não-Hodgkin (LNH). É considerado como agressivo porque a sobrevida é curta na ausência de tratamento adequado. Desde 1993 o tratamento deste linfoma passou a ser direcionado pelo índice internacional de prognóstico (IPI) validado em vários estudos. Entretanto, diante das diferentes respostas à mesma terapêutica para pacientes de mesmo IPI ...

Hallack Neto, Abraha?o E.; Juliana Pereira; Rosaura Saboya; Beatriz Beitler; Luis Fernando Pracchia; Dulley, Frederico L.; Chamone, Dalton A. F.

2006-01-01

97

Transducer for Harmonic Intravascular Ultrasound Imaging  

OpenAIRE

A recent study has shown the feasibility of tissue harmonic imaging (THI) using an intravascular ultrasound (IVUS) transducer. This correspondence describes the design, fabrication, and characterization of a THI-optimized piezoelectric transducer with oval aperture of 0.75 mm by 1 mm. The transducer operated at 20 MHz and 40 MHz, and was comprised of a single piezoelectric layer with additional passive layers. The Krimholtz-Leedom-Matthaei (KLM) model was used to iteratively find optimal mate...

Vos, Hendrik J.; Frijlink, Martijn E.; Droog, Erik; Goertz, David E.; Blacquiere, Gerrit; Gisolf, Anton; Jong, Nico; Steen, Antonius F. W.

2005-01-01

98

Ophthalmic complications with disseminated intravascular coagulation.  

OpenAIRE

Massive lid oedema, ecchymosis, proptosis with a total restriction of extraocular movement, markedly raised intraocular pressure, and occlusion of the central retinal artery developed acutely in the right eye of a 26-year-old woman with a past history of disseminated intravascular coagulation. She had been admitted to hospital for symptoms of abdominal pain and bleeding from multiple sites a few hours earlier. Five days previously she had some proptosis of the other eye and had been treated w...

Patchett, R. B.; Wilson, W. B.; Ellis, P. P.

1988-01-01

99

Optimization of Stent Deployment by Intravascular Ultrasound  

OpenAIRE

Intravascular ultrasound (IVUS) is a useful diagnostic method that provides valuable information in addition to angiography regarding the coronary vessel lumen, dimensions, plaque burden, and characteristics. The major use of IVUS in coronary intervention is to guide interventional strategies and assess optimal stent deployment. Since the introduction of the drug-eluting stent (DES), concerns about restenosis have decreased. However, high-risk lesion subsets are being routinely treated with D...

Yoon, Hyuck-jun; Hur, Seung-ho

2012-01-01

100

Dapsone hypersensitivity syndrome causing disseminated intravascular coagulation  

OpenAIRE

Dapsone hypersensitivity syndrome is an idiosyncratic reaction to this drug and can present with different clinical manifestations of varying severity. We describe a patient with disseminated intravascular coagulation (DIC) as an adverse reaction to dapsone. To the best of our knowledge, this is the first time it has been described in the literature. She presented with fever, rash and abdominal pain; she also had marked eosinophilia and features suggestive of oxidative haemolysis. Her course ...

Figtree, Melanie Clare; Miyakis, Spiros; Tanaka, Kumiko; Martin, Linda; Konecny, Pam; Krilis, Steven

2009-01-01

101

Ventricular metastasis resulting in disseminated intravascular coagulation  

OpenAIRE

Abstract Background Disseminated Intravascular Coagulation (DIC) complicates up to 7% of malignancies, the commonest solid organ association being adenocarcinoma. Transitional Cell Carcinoma (TCC) has rarely been associated with DIC. Case presentation A 74-year-old woman with TCC bladder and DIC was found to have a cardiac lesion suspicious for metastatic disease. The DIC improved with infusion of plasma and administration of Vitamin K, however the cardiac lesio...

Davis Ian D; John Thomas

2005-01-01

102

Intravascular volume after aneurysmal subarachnoid hemorrhage  

OpenAIRE

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 patients who have survived the first hours after the hemorrhage. Hypotension and hypovolemia have been associated with an increased risk for DCI after SAH. The aim of the research presented in this thesi...

Hoff, R. G.

2009-01-01

103

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese 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%-8 [...] 5%. 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. 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 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.

2010-05-01

104

Percutaneous Retrieval of Chronic Intravascular Foreign Bodies  

International Nuclear Information System (INIS)

To evaluate the feasibility of intravascular retrieval of chronic foreign bodies, we retrospectively reviewed an 8 year experience (1993-2001) of percutaneous retrieval of chronically retained intravascular foreign bodies (n = 6). In 6 of 6 cases (4 catheter fragments, 2 guidewires), 5-90 days elapsed before retrieval via the femoral or internal jugular vein. Under fluoroscopy, we determined the foreign body's course, position and size. A guidewire was advanced through a multipurpose catheter to the foreign body. The multipurpose catheter was replaced with a gooseneck snare catheter and the snare advanced to grasp and remove the foreign body. Percutaneous retrieval was successful in all 6 cases. One patient experienced mild hemoptysis, which resolved within 24 hr of observation. No patient experienced long-term sequelae. Given the potential life-threatening complications from intravascular foreign bodies and the low complication rate from percutaneous retrieval, we recommend extraction of the foreign body even if it is asymptomatic in the chronic setting (> 24 hr)

105

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 SciELO Colombia | Language: Spanish 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 con 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, hemat [...] ological, biochemical and immunohistochemical factors that have been useful for prognostic purposes in follow-up studies of patients with DLBCL treated with chemotherapy plus rituximab. 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.

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

2013-07-01

106

Linfoma hepático primario: causa infrecuente de lesión focal hepática  

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de una punción biopsia ecoguiada informa una infiltración masiva por un linfoma B difuso de células grandes. La inmunohistoquímica es CD20+ , CD45+ con CD3, CKAE1, AE3, Hepatocyte y HMB45 negativos. La citología del líquido pleural es negativa para atipía, el frotis de sangre periférica descarta una leucemia, la biopsia de médula ósea es negativa para infitración linfomatosa y el centellograma con galio y la tomografía computada corporal pelvis no revelan lesiones extrahepáticas. La paciente inicia quimioterapia con ciclofosfamida y metilprednisona, pero empeora y fallece dos semanas después de iniciado el tratamiento. Concluimos que nuestra paciente tenía una enfermedad rara con una lesión irresecable, factores de mal pronóstico y alto riesgo de recurrencia. La quimioterapia es el tratamiento de elección en estos casos.

Carolina Balduzzi

2010-01-01

107

Quilotórax bilateral y linfoma simultáneo en dos varones: presentación de dos casos / Bilateral chylothorax and simultaneous lymphoma in two male patients: report of two cases  

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Full Text Available SciELO Cuba | Language: Spanish Abstract in spanish Fundamento: el quilotórax es una enfermedad grave, más aún si es bilateral y de causa maligna, pero tiene tratamiento y el enfermo puede estabilizarse. Objetivo: presentar dos pacientes de interés médico y demostrar que puede esperarse buena respuesta al tratamiento. Casos Clínicos: se presentaron d [...] os enfermos portadores de quilotórax bilateral y linfoma, ambos varones, atendidos en el hospital de forma simultánea; se realizaron los exámenes complementarios diagnósticos. El diagnóstico en ambos resultó linfoma no Hodgkin y Hodgkin respectivamente, fueron tratados con dieta, se restringieron las grasas; tratamiento oncoespecÍfico y toracocentésis repetidas en ambos hemitórax. El primero, mejorado del derrame bilateral y síntomas inicialmente, fallece a los 11 meses por no control de su enfermedad base. El segundo, estable de ambas afecciones a los 18 meses, en ambos casos el quilotórax se compensó y no fue necesario repetir drenaje. Se hacen análisis comparativo con otros reportes sobre todo cuando el linfoma es la causa etiológica, la conducta adoptada concuerda con otros estudios actuales. Conclusiones: los enfermos mejoraron del quilotórax bilateral, uno no estabilizó su enfermedad de base y murió, mientras el otro está asintomático. Puede obtenerse buena respuesta terapéutica. Abstract in english Background: chylothorax is a serious disease, even more if it is bilateral and of a malignant cause; but it has treatment and the patient’s condition may be stable. Objective: to present two patients of medical interest and prove that a good response from the treatment may be expected. Clinical case [...] s: two male patients with bilateral chylothorax and lymphoma were simultaneously attended at the hospital. Complementary diagnostic tests were made. The diagnosis of both patients turned out to be non-Hodgkin’s and Hodgkin’s lymphomas respectively. They were put on a diet in which fat was cut; the oncospecific treatment and repeated thoracocentesis were applied in both hemithoraxes. The first patient, after getting better from the bilateral effusion and initial symptoms, passed away 11 months later for not controlling the base disease. The second patient presented a stable condition of both complaints 18 months later. In both cases chylotorax was eased and it was not necessary to repeat the drainage. Analyses compared to other reports are made mainly when the lymphoma is the etiological cause; the adopted conduct coincides with other current studies. Conclusions: the patients got better from bilateral chylothorax; one of them did not get a stable condition of his base disease and died and the second one is asymptomatic. A good therapeutic response may be obtained.

Karina, Armas Moredo; Yamilet, Santos Herrera; Orlando E., Olivera Morán; Miguel Emilio, García Rodríguez; Bárbaro Agustín, Armas Pérez.

2014-02-01

108

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

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Full Text Available SciELO Cuba | Language: Spanish 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 eda [...] d, 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. 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, 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.

2003-03-01

109

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

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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

2003-03-01

110

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 to histologic

Álvaro Pizarro

2013-02-01

111

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 SciELO Chile | Language: Spanish 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 nuestr [...] a 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. 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 institutio [...] n. 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

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

2013-02-01

112

Tratamiento del linfoma cutáneo de células T con ligandos selectivos del receptor retinoide X: alteraciones endocrinológicas y metabólicas / Treatment of cutaneous T-cell lymphoma with retinoid receptor X-selective ligands: endocrine and metabolic disorders  

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Full Text Available SciELO Spain | Language: Spanish Abstract in spanish Los ligandos selectivos del receptor retinoide X se utilizan actualmente en el tratamiento de estadios avanzados del linfoma cutáneo de células T resistentes a otros tratamientos sistémicos, siendo el bexaroteno el primer fármaco de este grupo aprobado en Europa. Se han descrito numerosos efectos ad [...] versos asociados a su utilización, entre los que destacan las alteraciones endocrino-metabólicas. Presentamos a 2 pacientes con linfoma cutáneo de células T, tratados con bexaroteno, que desarrollaron hipotiroidismo central y dislipemia de forma precoz tras su inicio. Se describen también la respuesta de estas alteraciones al tratamiento y su remisión completa tras suspender el bexaroteno. Abstract in english The retinoid X receptor-selective ligands has been used for advanced stages of cutaneous T-cell lymphoma refractory to previous systemic therapy, being bexarotene the first drug in this group approved in Europe. Multiple drug-related adverse events has been reported such as endocrine-metabolic disor [...] ders. We report 2 patients with cutaneous T-cell lymphoma, treated with bexarotene, that developed central hypothyroidism and dislipidaemia inmediately after the begining of this treatment. We also showed the successfully treatment response of these alterations and the total clinical remission after discontinuing the drug.

M. D., Avilés Pérez; V., Luna López; I., Rodríguez Nevado; D. de, Argila Fernández-Durán; J., Díaz Pérez de Madrid.

2007-12-01

113

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 SciELO Brazil | Language: Portuguese 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 cã [...] es. Estudos angiográficos realizados imediatamente antes e depois da injeção e 1 mês após o tratamento revelaram uma oclusão progressiva e persistente dos aneurismas. 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 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.

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

1980-03-01

114

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 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 aneurismas. 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.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 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.

Mario G. Siqueira

1980-03-01

115

Linfomas extranodales en el Área Metropolitana de Bucaramanga: 2000-2004  

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Full Text Available Antecedentes: Los linfomas extranodales (LEN se localizan en cualquier sitio diferente a los ganglios linfáticos, como el tracto gastrointestinal (TGI y la piel; la mayoría son de tipo linfoma no Hodgkin (LNH. Representan entre el 25-45% de todos los LNH, y el subtipo histopatológico más frecuente corresponde a linfoma difuso de células B grandes (LDCBG. El objetivo de este estudio es identificar algunas características socio-demográficas de los pacientes con linfomas extranodales residentes en el Área Metropolitana de Bucaramanga (AMB, así como otras características propias de los LEN. Metodología: Usando los datos recolectados en el RPC – AMB se calcularon frecuencias de algunas variables (sexo, edad, localización anatómica, tipo histopatológico de los LEN. Resultados: entre los años 2000-2004 se detectaron 247 casos de linfomas; 72 (29% correspondieron a LEN. El 58 % de los casos ocurrieron en hombres y el 42% en mujeres. Se encontró predominio de la enfermedad en la 6a y 7a década de la vida. Los sitios de mayor presentación fueron TGI (29%, piel (14%, y tejidos blandos (14%. Las clasificaciones más frecuentes para los LEN fueron LNH – NOS (No especificado (27,7% y linfoma difuso de células B grandes (19,4%. Conclusiones: Se encontraron semejanzas en las características de los LEN-NH comparado con los datos registrados a nivel mundial. Es necesario promover la implementación de métodos diagnósticos avanzados para este tipo de neoplasias. [Uribe CJ, García CA, Meza EE, Camacho RM, Acevedo DJ. Linfomas extranodales en el Área Metropolitana de Bucaramanga: 2000-2004. MedUNAB 2009; 12:19-21].

Claudia Janeth Uribe Pérez, MD* Carlos Alberto García Ramírez, MD* Erika Eliana Meza Durán, Enf * Rafael Miguel Camacho López** Diana Josefina Acevedo Jurado**

2009-01-01

116

Hypothesis: Disseminated Intravascular Inflammation as the Inflammatory Counterpart to Disseminated Intravascular Coagulation  

Science.gov (United States)

We have identified a leukocyte activation syndrome that is occasionally associated with the transfusion of intraoperatively recovered erythrocytes. This syndrome appears to result from intravascular damage caused by leukocytes activated during the erythrocyte salvage process. We hypothesize that this syndrome is part of a larger disease grouping: disseminated intravascular inflammation (DII). DII is the analog of the coagulation disorder disseminated intravascular coagulation. In disseminated intravascular coagulation, the organ damage results from uncontrolled activation of the clotting pathway; in DII the damage is caused by leukocytes that have become activated by direct contact with bacteria or in rare instances-such as erythrocyte salvage-in the absence of bacteria and bacterial products. Recent studies of the hazards associated with intraoperative blood salvage indicate that activation of leukocytes can be achieved by exposure to activated platelets alone. If such activated leukocytes are reinfused along with the washed erythrocytes, widespread organ damage may result. The lung is the organ most severely affected by activated leukocytes. Adult respiratory distress syndrome is one outcome. It is likely that DII is a presently unrecognized pathophysiological process that complicates a variety of primary disease states and increases their lethality.

Bull, Brian S.; Bull, Maureen H.

1994-08-01

117

Recurrent Disseminated Intravascular Coagulation Caused by Intermittent Dosing of Rifampin  

OpenAIRE

Daily rifampin therapy is associated with minimal adverse effects, but administration on an intermittent or interrupted basis has been associated with severe immunoallergic reactions such as hemolytic anemia, acute renal failure, and disseminated intravascular coagulation. We describe a patient with Mycobacterium leprae infection who experienced recurrent episodes of disseminated intravascular coagulation after intermittent exposures to rifampin, and review eight previously reported cases of ...

Havey, Thomas C.; Cserti-gazdewich, Christine; Sholzberg, Michelle; Keystone, Jay S.; Gold, Wayne L.

2012-01-01

118

Disseminated Intravascular Coagulation and Death Due to Snake Bites  

OpenAIRE

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

119

Disseminated intravascular coagulation and massive obstetric hemorrhage. Management dilemma.  

OpenAIRE

OBJECTIVES The objective of this retrospective study is to reflect on our experience on an optimal management for major postpartum hemorrhage, which would prevent the occurrence and complications of disseminated intravascular coagulation and minimize maternal mortality and morbidity. METHODS Ten cases out of the 30,000 of total deliveries of severe obstetric hemorrhage associated with disseminated intravascular coagulation were studied....

Al-nuaim, Lulu A.; Mustafa, Mohamed S.; Abdel Gader, Galil M.

2002-01-01

120

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.

Hamdi Mohamed Ali

2012-06-01

121

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

122

Intravascular imaging with a storage phosphor detector  

Energy Technology Data Exchange (ETDEWEB)

The aim of this study is to develop and test an intravascular positron imaging system based on a storage phosphor detector for imaging and detecting vulnerable plaques of human coronary arteries. The radiotracer F18-FDG accumulates in vulnerable plaques with inflammation of the overlying cap. The vulnerable plaques can, therefore, be imaged by recording positrons emitted from F18-FDG with a detector inserted into the artery. A prototype intravascular detector was constructed based on storage phosphor. The detector uses a flexible storage phosphor tube with 55 mm length, 2 mm diameter and 0.28 mm wall thickness. The intravascular detector is guided into the vessel using x-ray fluoroscopy and the accumulated x-ray signal must be erased prior to positron imaging. For this purpose, a light diffuser, 0.9 mm in diameter and 55 mm in length, was inserted into the detector tube. The light diffuser was connected to a laser source through a 2 m long optical fiber. The diffuser redirected the 0.38 W laser light to the inner surface of the phosphor detector to erase it. A heart phantom with 300 cm{sup 3} volume and three coronary arteries with 3.2 mm diameter and with several plaques was constructed. FDG solution with 0.5 {mu}Ci cm{sup -3} activity concentration was filled in the heart and coronary arteries. The detector was inserted in a coronary artery and the signal from the plaques and surrounding background activity was recorded for 2 min. Then the phosphor detector was extracted and read out using a storage phosphor reader. The light diffuser erased the signal resulting from fluoroscopic exposure to level below that encountered during positron imaging. Vulnerable plaques with area activities higher than 1.2 nCi mm{sup -2} were visualized by the detector. This activity is a factor of 10-20 lower than that expected in human vulnerable plaques. The detector was able to image the internal surface of the coronary vessels with 50 mm length and 360{sup 0} circumference. Spatial resolution was 0.6-1.2 mm FWHM with a readout pixel resolution of 80 {mu}m. The detector is flexible, reusable and easy to handle; it provides virtually real-time imaging. An intravascular imaging detector based on storage phosphor has shown a potential for imaging human coronary artery plaques. The detector provides the sensitivity, spatial resolution, flexibility and short imaging times necessary for clinical applications. Future research will decrease the detector diameter from 2 mm to 1 mm, and will apply the design to in vivo animal experiments.

Shikhaliev, Polad M; Petrek, Peter; Matthews, Kenneth L II; Fritz, Shannon G [Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA (United States); Bujenovic, L Steven [PET Imaging Center, Our Lady of the Lake Medical Center, Baton Rouge, LA (United States); Xu Tong, E-mail: pshikhal@lsu.ed [Department of Physics, Carleton University, Ottawa (Canada)

2010-05-21

123

Disseminated intravascular coagulation syndrome in anorexia nervosa.  

Science.gov (United States)

A 15 year old boy with anorexia nervosa developed disseminated intravascular coagulation syndrome (DIC). Because of severe cachexia he had been admitted to the Shimane Prefectural Central Hospital. During his hospitalization he developed generalized massive ecchymosis. Laboratory data revealed not only DIC but also multiple organ complications. The patient was treated intravenously with FOY (gabexate mesilate, a protease inhibitor), heparin, a transfusion of fresh frozen plasma, antithrombin III concentrates and platelets. Intravenous hyperalimentation was also administered. The laboratory data, the general condition and the emotional state of the patient improved remarkably. We emphasize the importance of keeping in mind coagulopathy as a complication in anorexia nervosa. PMID:1414338

Katamura, K; Ishimoto, F; Yamasaki, M; Yoshimura, M; Kisa, T

1992-08-01

124

Intravascular imaging with a storage phosphor detector  

Science.gov (United States)

The aim of this study is to develop and test an intravascular positron imaging system based on a storage phosphor detector for imaging and detecting vulnerable plaques of human coronary arteries. The radiotracer F18-FDG accumulates in vulnerable plaques with inflammation of the overlying cap. The vulnerable plaques can, therefore, be imaged by recording positrons emitted from F18-FDG with a detector inserted into the artery. A prototype intravascular detector was constructed based on storage phosphor. The detector uses a flexible storage phosphor tube with 55 mm length, 2 mm diameter and 0.28 mm wall thickness. The intravascular detector is guided into the vessel using x-ray fluoroscopy and the accumulated x-ray signal must be erased prior to positron imaging. For this purpose, a light diffuser, 0.9 mm in diameter and 55 mm in length, was inserted into the detector tube. The light diffuser was connected to a laser source through a 2 m long optical fiber. The diffuser redirected the 0.38 W laser light to the inner surface of the phosphor detector to erase it. A heart phantom with 300 cm3 volume and three coronary arteries with 3.2 mm diameter and with several plaques was constructed. FDG solution with 0.5 µCi cm-3 activity concentration was filled in the heart and coronary arteries. The detector was inserted in a coronary artery and the signal from the plaques and surrounding background activity was recorded for 2 min. Then the phosphor detector was extracted and read out using a storage phosphor reader. The light diffuser erased the signal resulting from fluoroscopic exposure to level below that encountered during positron imaging. Vulnerable plaques with area activities higher than 1.2 nCi mm-2 were visualized by the detector. This activity is a factor of 10-20 lower than that expected in human vulnerable plaques. The detector was able to image the internal surface of the coronary vessels with 50 mm length and 360° circumference. Spatial resolution was 0.6-1.2 mm FWHM with a readout pixel resolution of 80 µm. The detector is flexible, reusable and easy to handle; it provides virtually real-time imaging. An intravascular imaging detector based on storage phosphor has shown a potential for imaging human coronary artery plaques. The detector provides the sensitivity, spatial resolution, flexibility and short imaging times necessary for clinical applications. Future research will decrease the detector diameter from 2 mm to 1 mm, and will apply the design to in vivo animal experiments.

Shikhaliev, Polad M.; Petrek, Peter; Matthews, Kenneth L., II; Fritz, Shannon G.; Bujenovic, L. Steven; Xu, Tong

2010-05-01

125

Positron autoradiography for intravascular imaging: feasibility evaluation  

Science.gov (United States)

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.; Xu, Tong; Ducote, Justin L.; Easwaramoorthy, Balasubramaniam; Mukherjee, Jogeshwar; Molloi, Sabee

2006-02-01

126

Disseminated Intravascular Coagulation syndrome - ENT surgeon's perspective.  

Science.gov (United States)

ENT surgeon is seldom confronted with a systemic disease severe enough to progress to Disseminated Intravascular Coagulation syndrome (DIC), where he has to undertake a definitive surgical procedure for malignancy or perform an emergency tracheostomy. This calls for a judicious calculation of the pros and cons with an element of risk that needs to be accepted. We report two such patients who have been treated in such a scenario where the outcome varied depending on the severity and time of onset of the underlying coagulation disorder. PMID:23120357

Ravikumar, A; Sasindran, Vivek; Senthil, K; Samuel, John; Thirumaran

2006-10-01

127

Herpes hipertrófico perianal tratado eficazmente com imiquimod  

OpenAIRE

A infecção pelo vírus herpes simples tipo 2 (HSV-2) é frequente em pacientes infetados pelo vírus de imunodeficiência adquirida (VIH). Nestes casos, o herpes genital pode ter uma apresentação clínica atípica. As variantes hipertróficas e vegetantes são pouco habituais. Os autores relatam um caso de herpes hipertrófico perianal em paciente infetada pelo VIH, com resposta insatisfatória ao aciclovir e valaciclovir, tratado eficazmente com imiquimod tópico. O herpes genital ...

Lestre, S.; Joa?o, A.; Carvalho, C.; Serra?o, W.

2011-01-01

128

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese 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.

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

2013-04-01

129

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Spain | Language: Spanish 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 lit [...] eratura, 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 establ [...] ish the diagnostic and therapeutic steps.

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

2009-06-01

130

Pulsed liquid microjet for intravascular injection  

Science.gov (United States)

Occlusions of the retinal veins and arteries are associated with common diseases such as hypertension and arteriosclerosis and usually cause severe and irreversible loss of vision. Treatments for these vascular diseases have been unsatisfactory to date in part because of the difficulty of delivering thrombolytic drugs locally within the eye. In this article we describe a pulsed liquid microjet for minimally invasive intra-vascular drug delivery. The microjet is driven by a vapor bubble following an explosive evaporation of saline, produced by a microsecond-long electric discharge in front of the 25 micrometers electrode inside the micronozzle. Expansion of the transient vapor bubble produces a water jet with a diameter equal to the diameter of the nozzle, and with a velocity and duration that are controlled by the pulse energy. We found that fluid could be injected through the wall of a 60-micrometers -diameter artery in choriallantoic membrane using a 15-micrometers diameter liquid jet traveling at more than 60 m/s. Histological analysis of these arteries showed that the width of the perforation is limited to the diameter of the micronozzle, and the penetration depth of the jet is controlled by the discharge energy. The pulsed liquid microjet offers a promising technique for precise and needle-free intravascular delivery of thrombolytic drugs for localized treatment of retinal vascular occlusions.

Palanker, Daniel V.; Fletcher, Daniel A.; Miller, Jason; Huie, Philip; Marmor, Michael; Blumenkranz, Mark S.

2002-06-01

131

MALT-linfoma de cérvix: reporte de caso  

Scientific Electronic Library Online (English)

Full Text Available SciELO Chile | Language: Spanish 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 ha [...] llazgos 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 eco [...] graphic 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.

132

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

OpenAIRE

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 %) presentar...

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

1999-01-01

133

Hemostasia normal y coagulación intravascular diseminada en obstetricia Normal hemostasis and disseminated intravascular clotting in Obstetrics  

OpenAIRE

En el período gravido - puerperal, la coagulación sanguínea sufre cambios que se impone conocer para interpretar correctamente esos trastornos cuando se presentan en esta etapa, teniendo en cuenta las posibles complicaciones y el peligro para la vida que pueden presentarse. El objetivo del presente artículo es proporcionar a los obstetras una revisión bibliográfica que les permita actualizarse acerca del tema y facilite su modo de actuación ante pacientes con coagulación intravascular...

Danilo Nápoles Méndez; Dianela Nápoles García

2012-01-01

134

Disseminated intravascular coagulation or extended intravascular coagulation in massive pulmonary embolism  

OpenAIRE

See also Leitner JM, Jilma B, Spiel AO, Sterz F, Laggner AN, Janata KM. Massive pulmonary embolism leading to cardiac arrest is associated with consumptive coagulopathy presenting as disseminated intravascular coagulation. This issue, pp 1477–82; Thachil J. DIC score predicts mortality in massive clot coagulopathy as a result of extensive pulmonary embolism: a rebuttal. This issue, pp 1657–8; Leitner JM, Janata-Schwatzek K, Spiel AO, Sterz F, Laggner AN, Jilma B. DIC score predicts mortal...

Levi, M.

2010-01-01

135

Placental intravascular organisms: a case report.  

Science.gov (United States)

Ascending amniotic fluid bacterial infection is a cause of perinatal morbidity and mortality. A diagnosis of amniotic cavity infection can be inferred by documenting maternal (acute chorioamnionitis) and/or fetal (chorionic plate vasculitis; umbilical vasculitis/funisitis) inflammatory response. A definitive diagnosis of intrauterine/neonatal sepsis as a cause of stillbirth requires positive blood cultures obtained at postmortem examination. However, if postmortem examination is not performed, acute chorioamnionitis with/without fetal inflammatory response cannot be classified as a cause of demise. We present a case of intrauterine demise associated with acute chorioamnionitis, villitis, and intervillositis of the placenta. Although postmortem examination was denied, a conclusive diagnosis of intrauterine sepsis could be rendered by demonstration of gram-positive cocci within fetal vessels of umbilical cord, chorionic plate, and stem villi. This report highlights the importance of identification of placental intravascular organisms as unequivocal evidence of fetal sepsis, especially in cases where cultures cannot be obtained. PMID:20877362

Matoso, A; Shapiro, S; De Paepe, M E; Gundogan, F

2010-10-01

136

Ventricular metastasis resulting in disseminated intravascular coagulation  

Directory of Open Access Journals (Sweden)

Full Text Available Abstract Background Disseminated Intravascular Coagulation (DIC complicates up to 7% of malignancies, the commonest solid organ association being adenocarcinoma. Transitional Cell Carcinoma (TCC has rarely been associated with DIC. Case presentation A 74-year-old woman with TCC bladder and DIC was found to have a cardiac lesion suspicious for metastatic disease. The DIC improved with infusion of plasma and administration of Vitamin K, however the cardiac lesion was deemed inoperable and chemotherapy inappropriate; given the patients functional status. We postulate that direct activation of the coagulation cascade by the intraventricular metastasis probably triggered the coagulopathy in this patient. Conclusion Cardiac metastases should be considered in cancer patients with otherwise unexplained DIC. This may influence treatment choices.

Davis Ian D

2005-05-01

137

Dapsone hypersensitivity syndrome causing disseminated intravascular coagulation  

Science.gov (United States)

Dapsone hypersensitivity syndrome is an idiosyncratic reaction to this drug and can present with different clinical manifestations of varying severity. We describe a patient with disseminated intravascular coagulation (DIC) as an adverse reaction to dapsone. To the best of our knowledge, this is the first time it has been described in the literature. She presented with fever, rash and abdominal pain; she also had marked eosinophilia and features suggestive of oxidative haemolysis. Her course was complicated by DIC, splenic infarction and gastrointestinal bleeding. Extensive investigations did not reveal any alternative aetiology. She was initially treated with supportive measures and folic acid; steroids were administered later, following clinical deterioration. There was gradual improvement and the steroids were tapered. The patient recovered fully and remains well; her underlying chronic dermatologic condition is under satisfactory control with other medications. PMID:21829418

Figtree, Melanie Clare; Miyakis, Spiros; Tanaka, Kumiko; Martin, Linda; Konecny, Pam; Krilis, Steven

2009-01-01

138

Intravascular neutrophilic granulocyte kinetics in horses.  

Science.gov (United States)

Intravascular granulocyte kinetics in 4 healthy horses were determined with chromium-51 as the cell label. The disappearance rate of labeled granulocytes was an exponential function. Mean total blood granulocyte pool (+/- 1 SD) was 5.65 +/- 1.514 X 10(8) granulocytes/kg of body weight, of which 2.71 +/- 0.715 X 10(8) granulocytes/kg were circulating and 2.94 +/- 0.876 X 10(8) granulocytes/kg were marginated along blood vessel walls. The mean disappearance half-life (T1/2) was 10.5 +/- 1.33 hours and the mean granulocyte turnover rate was 8.84 +/- 1.495 X 10(8) granulocytes/kg/day. A granulokinetic trial performed on a horse recovering from a recent infection revealed increases in all granulokinetic measurements. PMID:7332122

Carakostas, M C; Moore, W E; Smith, J E

1981-04-01

139

Disseminated intravascular coagulation complicating urothelial malignancy.  

Science.gov (United States)

Transitional cell carcinoma has rarely been reported to be associated with disseminated intravascular coagulation (DIC). We report a 55-year-old Chinese man who was diagnosed with transitional cell carcinoma with vertebral metastasis. He presented with severe anaemia and thrombocytopenia, and subsequent evaluation revealed features of DIC. Interestingly, he did not have fever, any localising symptoms or signs of infection. He was treated aggressively with transfusion of packed cells, platelets, intravenous vitamin K and fresh frozen plasma. Despite aggressive treatment, the coagulation abnormalities were resistant to correction. The patient continued to deteriorate and eventually died of cardiac arrest. This case illustrates that transitional cell carcinoma can also be associated with DIC, possibly due to the expression of certain unidentified procoagulant factors similar to the tissue factor responsible for DIC. PMID:22941143

Chadachan, Veerendra M; Lee, Siew Khow

2012-08-01

140

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

Directory of Open Access Journals (Sweden)

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 suspicious t

Alexandre Caixeta Guimarães

2012-06-01

141

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 SciELO Brazil | Language: Portuguese 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 es [...] tranho 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. 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. 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. 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 "feelin [...] g 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 upp

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

2012-06-01

142

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

OpenAIRE

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 ...

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

2012-01-01

143

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 SciELO Brazil | Language: Portuguese 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 n [...] esse 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. 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 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. 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.

2011-12-01

144

Recurrent disseminated intravascular coagulation caused by intermittent dosing of rifampin.  

Science.gov (United States)

Daily rifampin therapy is associated with minimal adverse effects, but administration on an intermittent or interrupted basis has been associated with severe immunoallergic reactions such as hemolytic anemia, acute renal failure, and disseminated intravascular coagulation. We describe a patient with Mycobacterium leprae infection who experienced recurrent episodes of disseminated intravascular coagulation after intermittent exposures to rifampin, and review eight previously reported cases of rifampin-associated disseminated intravascular coagulation. In six (75%) cases, previous exposure to rifampin was reported and seven (87.5%) patients were receiving the medication on an intermittent or interrupted basis. Clinical features of rifampin-associated disseminated intravascular coagulation included fever, hypotension, abdominal pain, and vomiting within hours of ingestion. Average time to reaction was 3-6 doses if rifampin was being administered on a monthly schedule. Three (37.5%) of eight reported cases were fatal. A complete history of previous exposure to rifampin is recommended before intermittent therapy with this medication. PMID:22302861

Havey, Thomas C; Cserti-Gazdewich, Christine; Sholzberg, Michelle; Keystone, Jay S; Gold, Wayne L

2012-02-01

145

Disseminated intravascular coagulation in malaria: A case report.  

Science.gov (United States)

Disseminated intravascular coagulation (DIC) is seen in malaria and is more common in cerebral malaria. Here, we report the diagnosis and management of a case of severe P. falciparum malaria with DIC. PMID:24791054

Sailo, Laltanpuii; Pradhan, Debasis; Nongthombam, Rakesh; Bhattacharyya, Prithwis

2014-03-01

146

Recurrent Disseminated Intravascular Coagulation Caused by Intermittent Dosing of Rifampin  

Science.gov (United States)

Daily rifampin therapy is associated with minimal adverse effects, but administration on an intermittent or interrupted basis has been associated with severe immunoallergic reactions such as hemolytic anemia, acute renal failure, and disseminated intravascular coagulation. We describe a patient with Mycobacterium leprae infection who experienced recurrent episodes of disseminated intravascular coagulation after intermittent exposures to rifampin, and review eight previously reported cases of rifampin-associated disseminated intravascular coagulation. In six (75%) cases, previous exposure to rifampin was reported and seven (87.5%) patients were receiving the medication on an intermittent or interrupted basis. Clinical features of rifampin-associated disseminated intravascular coagulation included fever, hypotension, abdominal pain, and vomiting within hours of ingestion. Average time to reaction was 3–6 doses if rifampin was being administered on a monthly schedule. Three (37.5%) of eight reported cases were fatal. A complete history of previous exposure to rifampin is recommended before intermittent therapy with this medication. PMID:22302861

Havey, Thomas C.; Cserti-Gazdewich, Christine; Sholzberg, Michelle; Keystone, Jay S.; Gold, Wayne L.

2012-01-01

147

Disseminated intravascular coagulation in malaria: A case report  

OpenAIRE

Disseminated intravascular coagulation (DIC) is seen in <5% of patients with severe Plasmodium falciparum malaria and is more common in cerebral malaria. Here, we report the diagnosis and management of a case of severe P. falciparum malaria with DIC.

Sailo, Laltanpuii; Pradhan, Debasis; Nongthombam, Rakesh; Bhattacharyya, Prithwis

2014-01-01

148

Anemia hemolítica autoinmune como manifestación inicial de linfoma hodgkin  

Scientific Electronic Library Online (English)

Full Text Available SciELO Venezuela | Language: Spanish Abstract in spanish Se presenta el caso de una paciente de 66 años de edad, a la que se le diagnostica anemia hemolítica, la cual fue refractaria al tratamiento y requirió esplenectomía. Además presenta adenomegalias inguinales, cuya biopsia determina infiltración parcial por células linfoides B CD20+, con atipia, y CD [...] 30+, con factor de proliferación alto; en médula ósea se constata incremento de linfocitos T. Cuatro meses después, consulta por la aparición de adenopatías inguinales y axilares, de las cuales la biopsia reveló enfermedad de Hodgkin variante esclerosis nodular, y en médula ósea se evidenció infiltración por la enfermedad linfoproliferativa. Si bien es infrecuente la asociación entre anemia hemolítica y linfoma Hodgkin, debe tenerse en cuenta para llegar a la búsqueda oportuna de su causa y al diagnóstico de un probable proceso linfoproliferativo subyacente. Abstract in english In this work we report and study a case of 66 year old woman, whit diagnosis of hemolytic anemia, which was refractory to treatment and she required splenectomy. The patient presented inguinal lymphadenopathy which biopsy has determined a partial infiltration of B-cells CD20 + and CD30 + with atypia [...] and high growth factor. The bone marrow biopsy informed an increased number of T lymphocytes. Four month later, the patient complained due to the appearance of inguinal and axillaries lymph nodes, which biopsy revealed a nodular sclerosis Hodgkin lymphoma. The bone marrow biopsy showed infiltration by lymphoproliferative disease. Although the association between hemolytic anemia and Hodgkin lymphoma is less frequent, this fact should be taken into account in searching its cause and reaching the diagnosis of a probable underlying lymphoproliferative process.

María Virginia, Bürgesser; Diego, Camps; Ana, Diller; Gastón, Caeiro.

2011-03-01

149

Linfoma gástrico tipo malt presentación de un caso  

Scientific Electronic Library Online (English)

Full Text Available SciELO Venezuela | Language: Spanish 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 histopatológico 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. T [...] he upper digestive endoscopy showed a big ulceration in the cardial portion and granulate mucosa in the bottom of stomach. The histological study with inmunohistochemistry revealed 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.

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

2008-03-01

150

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: Spanish 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 l [...] a 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. 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 s [...] kull 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.

2012-10-01

151

Acute intravascular hemolysis and methemoglobinemia following naphthalene ball poisoning.  

Science.gov (United States)

Naphthalene (C10H8) is a natural component of fossil fuels such as petroleum, diesel and coal. The common consumer products made from naphthalene are moth repellents, in the form of mothballs or crystals, and toilet deodorant blocks. Major toxic effects of naphthalene are due to precipitation of acute intravascular hemolysis. Very few cases of naphthalene poisoning and its effects have been reported from India. We report a case of accidental naphthalene poisoning, who presented with intravascular hemolysis and methemoglobinemia. PMID:25332608

Kapoor, Rajan; Suresh, P; Barki, Satish; Mishra, Mayank; Garg, M K

2014-09-01

152

A Fatal Case of Intravascular Coagulation After Bee Sting Acupuncture  

OpenAIRE

Bee stings can cause severe adverse reactions, leading to anaphylaxis, cardiovascular collapse, and death. In some cases, bee venom also induces disseminated intravascular coagulation (DIC). However, to our knowledge, there has been no fatal case of intravascular coagulation accompanied by anaphylaxis caused by bee sting acupuncture. Here, we report a fatal case of a 65-year-old woman with DIC, following anaphylactic shock after bee sting acupuncture. This case emphasizes that practitioners s...

Jung, Jae Woo; Jeon, Eun Ju; Kim, Jeong Wook; Choi, Jae Chol; Shin, Jong Wook; Kim, Jae Yeol; Park, In Won; Choi, Byoung Whui

2012-01-01

153

Chronic disseminated intravascular coagulation presenting as renal mass  

OpenAIRE

Disseminated intravascular coagulation (DIC) is a complex clinical syndrome, described as a sequential activation of the coagulation and fibrinolytic system. Trauma and sepsis are some of the known precipitating factors. We report a case of nonovert disseminated intravascular coagulation presenting as a huge renal mass in a 3-year-old child, suspected to be a Wilms? tumor. On imaging studies, it was found to be a renal hematoma. Laboratory investigations revealed an underlying chronic ...

Somashekhar Manjiri; Kadamba Padmalatha; Wakodkar Mugdha

2008-01-01

154

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Chile | Language: Spanish 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 e [...] ste caso se presenta una paciente con clínica de dolor y distensión abdominal con una masa pélvica palpable, estableciéndose posteriormente el diagnóstico de linfoma B 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 pai [...] n 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 differentiate 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.

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

155

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 SciELO Spain | Language: English 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, 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. 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 c [...] ontroversies 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.

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

2006-02-01

156

Linfomas plasmoblásticos del tracto gastrointestinal en pacientes con sida Plasmablastic lymphoma of the gastrointestinal tract in AIDS patients  

OpenAIRE

Los pacientes con infección por el virus de inmunodeficiencia humana (HIV) tienen 200 veces más riesgo de desarrollar un linfoma no Hodgkin (LNH) con respecto a la población general. El linfoma plasmoblástico (LP) representa menos del 3% de todos los LNH asociados con el HIV. El objetivo de este estudio es informar las características clínico-patológicas de 5 pacientes con enfermedad HIV/sida y LP del tracto gastrointestinal. Se revisaron de forma retrospectiva los casos de LP del trac...

Alejandro Avilés-Salas; Roberto Herrera-Goepfert; Diana Aguilar-León; Myrna Candelaria-Hernández; Erasmo Martínez-Cordero; Marcelo Corti

2011-01-01

157

Avaliação do efeito da associação do Rituximab ao protocolo de quimioterapia ciclofosfamida, doxorrubicina, vincristina e prednisolona (CHOP) no tratamento de linfomas Não-Hodgkin  

OpenAIRE

O protocolo de quimioterapia ciclofosfamida, doxorrubicina, vincristina e prednisolona (CHOP) e, posteriormente, rituximab, ciclofosfamida, doxorrubicina, vincristina e prednisolona (RCHOP) têm sido utilizados como terapêutica em Linfomas não-Hodgkin (LNH) como o Linfoma Difuso de Grandes Células B (LDGCB) e o Linfoma Folicular (LF). O LDGCB constitui o tipo de LNH mais frequente, com uma incidência de 40% e o LF representa cerca de 25% de todos os LNH-B. O anticorpo monoclonal rituximab...

Fuste, P.; Pereira, C.; Reis, A.; Serrano, V.; Aranha, Liliana; Costa, Ana Margarida

2010-01-01

158

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  

OpenAIRE

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 l...

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

2012-01-01

159

Improved dosimetry techniques for intravascular brachytherapy  

Science.gov (United States)

Coronary artery disease leads to the accumulation of atheromatous plaque leading to coronary stenosis. Coronary intervention techniques such as balloon angioplasty and atherectomy are used to address coronary stenosis and establish a stable lumen thus enhancing blood flow to the myocardium. Restenosis or re-blockage of the arteries is a major limitation of the above mentioned interventional techniques. Neointimal hyperplasia or proliferation of cells in response to the vascular injury as a result of coronary intervention is considered to be one of the major causes of restenosis. Recent studies indicated that irradiation of the coronary lesion site, with radiation doses ranging from 15 to 30 Gy, leads to diminishing neointimal hyperplasia with subsequent reduction in restenosis. The radiation dose is given by catheter-based radiation delivery systems using beta-emitters 90Sr/90Y, 32P and gamma-emitting 192Ir among others. However the dose schema used for dose prescription for these sources are relatively simplistic, and are based on calculations using uniform homogenous water or tissue media and simple cylinder geometry. Stenotic coronary vessels are invariably lined with atheromatous plaque of heterogeneous composition, the radiation dose distribution obtained from such dosimetry data can cause significant variations in the actual dose received by a given patient. Such discrepancies in dose calculation can introduce relatively large uncertainties in the limits of dose window for effective and safe application of intravascular brachytherapy, and consequently in the clinical evaluation of the efficacy of this modality. In this research study we investigated the effect of different geometrical and material heterogeneities, including residual plaque, catheter non-centering, lesion eccentricity and cardiac motion on the radiation dose delivered at the lesion site. Correction factors including dose perturbation factors and dose variation factors have been calculated using Monte Carlo-based radiation transport code MCNP and tabulated for a range of different coronary geometries and different radionuclides. A new technique using imaging techniques such as intravascular ultrasound and angiography to assess dosimetry for realistic coronary arteries is also introduced. The results indicate the need for accurate assessment of post-intervention clinical measurements such as minimal lumen diameter and residual plaque burden and incorporating them into dose calculations.

Sehgal, Varun

160

Disseminated intravascular coagulation or extended intravascular coagulation in massive pulmonary embolism  

Science.gov (United States)

See also Leitner JM, Jilma B, Spiel AO, Sterz F, Laggner AN, Janata KM. Massive pulmonary embolism leading to cardiac arrest is associated with consumptive coagulopathy presenting as disseminated intravascular coagulation. This issue, pp 1477–82; Thachil J. DIC score predicts mortality in massive clot coagulopathy as a result of extensive pulmonary embolism: a rebuttal. This issue, pp 1657–8; Leitner JM, Janata-Schwatzek K, Spiel AO, Sterz F, Laggner AN, Jilma B. DIC score predicts mortality in massive clot coagulopathy as a result of extensive pulmonary embolism: reply to a rebuttal. This issue, pp 1658–9. PMID:20412432

LEVI, M

2010-01-01

161

Immunological characterization of pulmonary intravascular macrophages  

Science.gov (United States)

Pulmonary intravascular macrophages (PIMs) are lung macrophages found apposed to the endothelium of pulmonary capillaries. In many species, they are responsible for the clearance of blood-borne particulates and pathogens; however, little else is known about their roles as immunologic effector cells. We compared PIMs with pulmonary alveolar macrophages (PAMs) to determine the relative immunological activities of these two cell populations. Our results suggested that both populations possess similar phagocytic and bactericidal activities. In assays measuring cytotoxicity, PIMs were more cytotoxic than PAMs against virally infected target cells; however, differences between these macrophage populations were not as marked when noninfected targets were used. LPS-stimulated PIMs produced more T-cell proliferative cytokines than PAMs, and both populations of nonstimulated macrophages produced similar amounts of the cytokines. In contrast, PAMs produced more TNF alpha and NO2- than PIMs when both populations were stimulated with LPS; however, nonstimulated PAMs and PIMs produced similar amounts of TNF alpha and NO2. These data suggest that bovine PIMs are immunologically active. Differences between the degrees of activity of PIMs and PAMs indicate that these macrophage populations may have different roles in lung surveillance.

Chitko-McKown, C. G.; Reddy, D. N.; Chapes, S. K.; McKown, R. D.; Blecha, F.; Spooner, B. S. (Principal Investigator)

1992-01-01

162

Características epidemiológicas, clínicas y patológicas de los linfomas en el Hospital Nacional Cayetano Heredia del año 1998 al 2008 / Epidemiological, clinical, and pathologic characteristics of lymphoma cases in Cayetano Heredia National Hospital from 1998 to 2008  

Scientific Electronic Library Online (English)

Full Text Available SciELO Peru | Language: Spanish Abstract in spanish Objetivo: Conocer las características epidemiológicas, clínicas y patológicas de los pacientes con linfoma diagnosticados en el Hospital Nacional Cayetano Heredia. Material y métodos: Se realizó un estudio descriptivo, retrospectivo, tipo serie de casos de 433 pacientes portadores de linfoma del año [...] 1998 al 2008. Resultados: El promedio de edad fue de 44,8 años, 60,04% eran de sexo masculino. El lugar de nacimiento y procedencia más frecuente fue Lima con 61,5% y 90% respectivamente. Los síntomas más frecuentes son la baja de peso y la presencia de linfoadenopatías (40,5% y 3,7% respectivamente). El 55,08% de los pacientes se encontraban en estadio clínico I - II. La localización más frecuente fue ganglionar (55,1%). Las localizaciones extraganglionares más frecuentes fueron: gastrointestinal (15,2%) y piel (10,8%). Se hallo que el inmunofenotipo B fue de 57.8% de los linfoma no Hodgkin y el patrón histológico más común fue el linfoma de células grandes difuso (35,8%), enfermedad de Hodgkin fue el 14,08%. De los pacientes tratados, 78,12% tuvieron respuesta completa y parcial de la enfermedad. El tratamiento en la enfermedad de Hodgkin fue ABVD con 90,97% de respuesta completa y parcial. Solo se reportó que el 23,45% de los pacientes han fallecido al momento. Conclusiones: Los pacientes con linfoma atendidos en el Hospital Nacional Cayetano Heredia tienen características similares a lo reportado a nivel mundial. Abstract in english Objective: To determine the epidemiological, clinical and pathological characteristics of lymphoma cases in Cayetano Heredia National Hospital. Material and methods: We conducted a descriptive and retrospective case series including 433 patients with lymphoma diagnosed from 1998 to 2008. Results: Av [...] erage age of patients was 44.8 years, and 60.04% were male. Most frequent birthplace and living area was Lima, with 61.5% and 90% of all patients, respectively. Most frequent symptoms were weight loss and lymph node enlargement (40.5% and 3,7%, respectively). More than half of all patients (55.08%) were in I-II clinical stages. The most frequent location of the disease was in the lymph nodes (55.1%). Extranodal locations were the gastrointestinal tract (15.2%) and the skin (10.8%). The B immunophenotype corresponded to 57.8% o all non-Hodgkin lymphoma cases, and the most common histological type was diffuse large cell lymphoma (35.8%), and Hodgkin’s disease accounted for 14.08%. Of all treated patients, 78.12% had complete and partial response. Therapy for Hodgkin’s disease was ABVD, with 90.97% of all patients achieving complete and/or partial response. Only 23.45% of all patients were reported as dead. Conclusions: Lymphoma patients seen in Cayetano Heredia National Hospital have similar characteristics compared to was is reported in a worldwide basis.

Juan José, Padilla Valdez; Victor, Ulloa Pérez; Diego, Venegas Ojeda.

2011-01-01

163

Hemostasia normal y coagulación intravascular diseminada en obstetricia / Normal hemostasis and disseminated intravascular clotting in Obstetrics  

Scientific Electronic Library Online (English)

Full Text Available SciELO Cuba | Language: Spanish Abstract in spanish En el período gravido - puerperal, la coagulación sanguínea sufre cambios que se impone conocer para interpretar correctamente esos trastornos cuando se presentan en esta etapa, teniendo en cuenta las posibles complicaciones y el peligro para la vida que pueden presentarse. El objetivo del presente [...] artículo es proporcionar a los obstetras una revisión bibliográfica que les permita actualizarse acerca del tema y facilite su modo de actuación ante pacientes con coagulación intravascular diseminada. Se concluye que es preciso diagnosticar tempranamente el proceso en la fase bioquímica de bajo grado y aplicar en las féminas el tratamiento expedito de la enfermedad de base para eliminar las complicaciones o disminuir su ocurrencia Abstract in english In the period from pregnancy to puerperium, blood clotting suffers changes which are important to be known in order to interpret correctly those dysfunctions when they appear in this stage, keeping in mind the possible complications and the danger for life which can take place. The objective of the [...] present work is to provide the obstetricians a literature review that allows them to be updated about the topic and facilitate their performance in case of patients with disseminated intravascular clotting. It is concluded that it is necessary to have an early diagnosis on the process during the low grade biochemical phase and to apply in these women the expedite treatment of the base disease to eliminate complications or to decrease their occurrence.

Danilo, Nápoles Méndez; Dianela, Nápoles García.

2012-03-01

164

Hemostasia normal y coagulación intravascular diseminada en obstetricia Normal hemostasis and disseminated intravascular clotting in Obstetrics  

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Full Text Available En el período gravido - puerperal, la coagulación sanguínea sufre cambios que se impone conocer para interpretar correctamente esos trastornos cuando se presentan en esta etapa, teniendo en cuenta las posibles complicaciones y el peligro para la vida que pueden presentarse. El objetivo del presente artículo es proporcionar a los obstetras una revisión bibliográfica que les permita actualizarse acerca del tema y facilite su modo de actuación ante pacientes con coagulación intravascular diseminada. Se concluye que es preciso diagnosticar tempranamente el proceso en la fase bioquímica de bajo grado y aplicar en las féminas el tratamiento expedito de la enfermedad de base para eliminar las complicaciones o disminuir su ocurrenciaIn the period from pregnancy to puerperium, blood clotting suffers changes which are important to be known in order to interpret correctly those dysfunctions when they appear in this stage, keeping in mind the possible complications and the danger for life which can take place. The objective of the present work is to provide the obstetricians a literature review that allows them to be updated about the topic and facilitate their performance in case of patients with disseminated intravascular clotting. It is concluded that it is necessary to have an early diagnosis on the process during the low grade biochemical phase and to apply in these women the expedite treatment of the base disease to eliminate complications or to decrease their occurrence.

Danilo Nápoles Méndez

2012-03-01

165

Causas de mortalidad en pacientes con linfoma de Hodgkin / Causes of mortality in patients with Hodgkin lymphoma  

Scientific Electronic Library Online (English)

Full Text Available SciELO Cuba | Language: Spanish Abstract in spanish Se realizó un estudio retrospectivo-descriptivo en el Servicio de Hematología del Hospital Clinicoquirúrgico "Hermanos Ameijeiras" para conocer las causas de muerte en pacientes con diagnóstico de linfoma de Hodgkin tratados desde enero de 1983 hasta diciembre de 2008. De los 619 pacientes diagnosti [...] cados en ese período, la muestra quedó constituida por 443, de los cuales 287 (64,8 %) se encontraban vivos al final del estudio y 156 (35,2 %) habían fallecido. La recaída/progresión de la enfermedad fue la causa más importante de muerte, independientemente de la edad de presentación, la modalidad de tratamiento empleada y el tiempo de evolución (125 pacientes, 80 %). El 20 % restante de las muertes ocurrió por segundas neoplasias en 10 pacientes (6,4 %), complicaciones del tratamiento en 8 (5,1 %), complicaciones infecciosas fatales en 2 (1,2 %) y enfermedad cardiovascular en 3 (1,9 %). En 8 pacientes (5,1 %) no se precisó la causa de muerte. Las segundas neoplasias predominaron en pacientes de 40-59 años, que recibieron la modalidad de tratamiento combinada y con menos de 10 años de evolución. Abstract in english A retrospective descriptive study was conducted in the Hematology Service at Hermanos Ameijeriras Hospital to know the causes of death in patients with Hodgkin lymphoma, who were treated from January 1983 to December 2008. Out of 619 patients diagnosed in that period, the total sample was formed by [...] 443 patients. 287 (64.8 %) of them were alive at the end of the study, and 156 (35.2%) had died. This disease relapse/progression were the leading cause of death, regardless age of its presentation, treatment used, and the time of progression (125 patients, 80 %). The remaining 20 % of deaths occurred from secondary malignancies in 10 patients (6.4 %), complications of treatment in 8 (5.1 %), fatal infectious complications in 2 (1.2 %), and cardiovascular disease in 3 (1.9 %). In 8 patients (5.1 %) the cause of death was not stated. Secondary malignancies were predominant in patients aged 40-59, who received combined treatment with less than 10 years of evolution.

Tamara, Delgado Vargas; José, Carnot Uria; Raúl, de Castro Arenas; Jorge, Muñío Perurena; Calixto, Hernández Cruz; Aramís, Núñez Quintana; Guillermo, Pérez Román; Yusaima, Rodríguez Fraga.

2013-12-01

166

Use of intravascular imaging in managing coronary artery disease.  

Science.gov (United States)

For many years, coronary angiography has been considered "the gold standard" for evaluating patients with coronary artery disease. However, angiography only provides a planar two-dimensional silhouette of the lumen and is unsuitable for the precise assessment of atherosclerosis. With the introduction of intravascular imaging, direct visualization of the arterial wall is now feasible. Intravascular imaging modalities extend diagnostic information, thereby enabling more precise evaluation of plaque burden and vessel remodeling. Of all technologies, intravascular ultrasound (IVUS) is the most mature and widely used intravascular imaging technique. Optical coherence tomography (OCT) is an evolving technology that has the highest spatial resolution of existing imaging methods, and it is becoming increasingly widespread. These methods are useful tools for planning interventional strategies and optimizing stent deployment, particularly when stenting complex lesions. We strongly support the mandatory use of IVUS for left main percutaneous coronary intervention (PCI). In addition, it can be used to evaluate vascular responses, including neointimal growth and strut apposition, during follow-ups. Adequately powered randomized trials are needed to support IVUS or OCT use in routine clinical practice and to answer whether OCT is superior to IVUS in reducing adverse events when used to guide PCI. The current perception and adoption of innovative interventional devices, such as bioabsorbable scaffolds, will increase the need for intravascular imaging in the future. PMID:24976911

Jegere, Sanda; Narbute, Inga; Erglis, Andrejs

2014-06-26

167

Epidemiología del linfoma con compromiso de cabeza y cuello en el Centro Asistencial Sótero del Río Epidemiology of lymphoma of the head and neck in the Centro Asistencial Sótero del Río  

OpenAIRE

Introducción: Los linfomas son la neoplasia hematológica más frecuente del adulto, ocupando el tercer lugar de las neoplasias de cabeza y cuello (CyC). Se distinguen dos tipos, el linfoma de Hodgkin (LH) y el linfoma no Hodgkin (LNH), constituyendo dos entidades clínicas separadas. Objetivo: Evaluar las manifestaciones de los linfomas en la región de CyC, analizando las diferencias de presentación y comportamiento entre en LH y el LNH. Material y método: Estudio retrospectivo de todos ...

Raimundo García M; Roberto Fernández G; Rubén González E

2011-01-01

168

LINFOMAS PULMONARES: CORRELAÇÃO DA TOMOGRAFIA COMPUTADORIZADA DE ALTA RESOLUÇÃO COM A ANATOMOPATOLOGIA  

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Full Text Available Neste trabalho são descritos os aspectos tomográficos de alta resolução dos linfomas pulmonares e feita correlação com os achados anatomopatológicos. Com este objetivo, foram revisados as tomografias computadorizadas de alta resolução do tórax e os dados histopatológicos de dez pacientes com diagnóstico confirmado de linfoma não-Hodgkin ou de doença de Hodgkin. Os resultados obtidos foram confrontados com os descritos na literatura. Os achados radiológicos mais comumente vistos neste estudo foram as consolidações parenquimatosas, localizadas, com broncogramas aéreos de permeio (n = 8. Em menor freqüência, foram encontrados múltiplos nódulos parenquimatosos (n = 4, espessamento peribroncovascular (n = 3 e opacidades em vidro fosco (n = 2. Na correlação com a anatomia patológica, as consolidações corresponderam a preenchimento alveolar por células neoplásicas, o espessamento peribroncovascular se deveu a infiltração das bainhas peribroncovasculares por células linfomatosas e a atenuação em vidro fosco se associou com infiltração dos septos alveolares por tais células.

Marchiori Edson

2002-01-01

169

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese 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 doenç [...] a. 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 involve [...] ment 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.

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

2004-02-01

170

Linfoma não-Hodgkin endobrônquico Endobronchial involvement in non-Hodgkin’s lymphoma  

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Full Text Available 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.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.

Mauro Zamboni

2004-02-01

171

Chronic disseminated intravascular coagulation presenting as renal mass  

Science.gov (United States)

Disseminated intravascular coagulation (DIC) is a complex clinical syndrome, described as a sequential activation of the coagulation and fibrinolytic system. Trauma and sepsis are some of the known precipitating factors. We report a case of nonovert disseminated intravascular coagulation presenting as a huge renal mass in a 3-year-old child, suspected to be a Wilms’ tumor. On imaging studies, it was found to be a renal hematoma. Laboratory investigations revealed an underlying chronic disseminated intravascular coagulation caused by sepsis. The child recovered with conservative treatment; follow up investigations showed resolution of renal hematoma with renal function returning to base line. Clinical presentation of Chronic DIC is variable. Laboratory investigations usually help to diagnose the condition and also to monitor the progress of the treatment. The treatment of the triggering cause is the cornerstone of the management of this condition. PMID:20011499

Somashekhar, Manjiri; Kadamba, Padmalatha S.; Wakodkar, Mugdha

2008-01-01

172

Emergency treatment by intravascular embolization in traumatic carotid cavernous fistula  

International Nuclear Information System (INIS)

Objective: To discuss the method of intervenfional intravascular treatment in traumatic carotid cavernous fistula (TCCF) and the significance of clinical application in emergency. Methods: In 297 eases of TCCF, 36 cases were treated by interventional intravascular embolization by detachable balloon, embolization orificium or occlusion in one side of carotid artery. In the 36 cases, serious epistaxis occurred in 22 eases, cortical vein inflow in 9 cases, intracranial hemorrhage in 3 cases, aggravation of eyesight in 3 cases, and limb dysfunction in 2 cases. Results: Fistula was successfully embolized and internal carotid artery remained patent in 19 cases. Complete embolization of orificium or internal carotid artery was achieved in 17 eases. The serious epistaxias in 22 cases and intracranial hemorrhage in 3 cases stopped. Eyesight recovered in 2 eases and improved in 1 case. Limb dysfunction improved evidently in 2 cases. Conclusion: Intravascular embolization treatment is the first therapeutic choice for TCCF, especially in emergency. It is necessary, safe and effective. (authors)

173

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: English 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, conti [...] nuaram a recair tanto durante a terapia de indução como na manutenção. Além disso, todos estes estudos iniciais não foram capazes de detectar qualquer índice 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 an 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.

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

2008-06-01

174

T- Lymphoblastic lymphoma in adults Linfoma linfoblástico T dos adultos  

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Full Text Available 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 an 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.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 índice 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.

Gino Santini

2008-06-01

175

Identificación del gen MALT1 como oncogén dominante en el linfoma MALT.  

OpenAIRE

En los linfomas no Hodgkin (LNH), las traslocaciones primarias características dan lugar a la desregulación de un protooncogén (debido en un gran número de casos al reordenamiento con el gen de las inmunoglobulinas) y cuya consecuencia funcional es la alteración de la expresión génica con potencial neoplásico. Otro tipo de lesión genética frecuente es la delección cromosómica que inactiva genes supresores tumorales, por ejemplo p53 ó p16. Estas anomalías se identifican junto a l...

Sa?nchez Izquierdo, Maria Dolores

2005-01-01

176

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

OpenAIRE

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 ...

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

2011-01-01

177

Linfomas del tubo digestivo y glándulas anexas en pacientes con SIDA. Serie de casos  

OpenAIRE

Introducción: el linfoma no Hodgkin (LNH) es la segunda neoplasia más frecuente en pacientes con SIDA. Una de las principales características de los LNH asociados con el SIDA es la alta frecuencia de compromiso extranodal, incluyendo el tracto gastrointestinal, como manifestación inicial de la neoplasia. Métodos: se analizaron de manera retrospectiva las características epidemiológicas, clínicas, virológicas, inmunológicas e histopatológicas de 8 pacientes con diagnóstico de linfo...

Marcelo Corti; Fioti, Mar U. Eda F. Villafa U. F. E.; Daniel Lewi; Ricardo Schtirbu; Marina Narbaitz; Marcela de Dios Soler

2006-01-01

178

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

2005-08-01

179

Quilotórax bilateral y linfoma simultáneo en dos varones: presentación de dos casos  

OpenAIRE

Fundamento: el quilotórax es una enfermedad grave, más aún si es bilateral y de causa maligna, pero tiene tratamiento y el enfermo puede estabilizarse. Objetivo: presentar dos pacientes de interés médico y demostrar que puede esperarse buena respuesta al tratamiento . Casos Clínicos: se presentaron dos enfermos portadores de quilotórax bilateral y linfoma, ambos varones, atendidos en el hospital de forma simultánea; se realizaron los exámenes complementarios diagnósticos. El diagnó...

Karina Armas Moredo; Yamilet Santos Herrera; Orlando E. Olivera Mor\\u00E1n; Edguez, Miguel Emilio Garc U. Eda Rodr U.; Rez, B. U. E. Rbaro Agust U. Edn Armas P. U. E.

2014-01-01

180

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: English 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 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. Clinica [...] l 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.

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

2005-08-01

181

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

OpenAIRE

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 linfoma B de celulas g...

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

2003-01-01

182

Liver abscess and disseminated intravascular coagulation in tuberculosis.  

Science.gov (United States)

We report the case of a 55-year-old man with chronic renal failure, and a history of prolonged fever and jaundice. Radiological studies revealed a multiloculated irregular liver abscess. Mycobacterium tuberculosis was isolated from the abscess on smear and culture of aspirated pus. Haematological studies revealed the presence of disseminated intravascular coagulation. A detailed search failed to identify any reason for this other than the tuberculous infection. The treatment of tuberculous liver abscess and pathogenesis of disseminated intravascular coagulation in tuberculosis are discussed. PMID:7567759

Nampoory, M R; Halim, M M; Sreedharan, R; al-Sweih, N A; Gupta, R K; Constandi, J N; Johny, K V

1995-08-01

183

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

2010-09-01

184

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Spain | Language: Spanish 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 posibl [...] e 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 reactio [...] n 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.

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

2004-12-01

185

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Cuba | Language: Spanish 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 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. 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 les [...] ion 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.

2010-09-01

186

Modelos animales y células derivadas para su uso en la determinación de compuestos útiles en el tratamiento de linfomas de células T  

OpenAIRE

Modelos animales y células derivadas para su uso en la determinación de compuestos útiles en el tratamiento de linfomas de células T. La presente invención se encuadra dentro del campo de la biotecnología. Se refiere a un método para evaluar si un compuesto es efectivo en la prevención y/o tratamiento de una enfermedad asociada a linfomas de células T.

Garci?a Bustelo, Xose? Ramo?n; Ruiz Maci?as, Sergio; Santos Dios, Eugenio

2008-01-01

187

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

OpenAIRE

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.Dezenove pacientes que apresentaram a forma clínica cutânea do loxoscel...

Pasquale Morena; Kimiyo Nonoyama; Cardoso, Joa?o Luiz C.; Barreto, Orlando C. O.

1994-01-01

188

Risk stratification for indolent lymphomas Estratificação de risco dos linfomas indolentes  

Directory of Open Access Journals (Sweden)

Full Text Available 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 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.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 pacientes, 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.

Abrahão Elias Hallack Neto

2010-01-01

189

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: English 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 pe [...] lo mundo. Adescrição do Índice Internacional de Prognóstico dos linfomas folicular (FLIPI) representa um passo importante na identificação de subgrupos de pacientes, 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 significa [...] ntly throughout the world. The description of the Follicular Lymphoma International Prognostic Index (FLIPI) was an important step in identifying patient subgroups, but its use 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.

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

190

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Spain | Language: Spanish 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 aclaram [...] iento 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. 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 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.

2008-03-01

191

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

2008-03-01

192

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Spain | Language: English 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 s [...] iempre 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. 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. Differen [...] t 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.

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

2005-10-01

193

Linfoma conjuntival tipo MALT bilateral en adolescente / Bilateral Conjunctival MALT Lymphoma in an Adolescent  

Scientific Electronic Library Online (English)

Full Text Available SciELO Cuba | Language: Spanish Abstract in spanish Los linfomas tipo MALT primarios de conjuntiva son infrecuentes y es mucho menor la afectación conjuntival exclusiva, su bilateralidad es poco común, representan el 5% del total de los linfomas no Hodgkin extranodales; son linfomas B de bajo grado derivados de linfocitos de la zona marginal con alte [...] raciones moleculares que han bloqueado su apoptosis. Se presentó un caso de linfoma tipo MALT primario de la conjuntiva tarsal inferior de ambos ojos, en un niño de 12 años de edad, que acudió por enrojecimiento y molestias en ambos ojos de un año de evolución. Al realizar el examen físico presentó discreta ptosis del ojo izquierdo de un milímetro, masa de color anaranjada-salmón en fondo saco conjuntival inferior en ambos ojos, no adherida a planos profundos. El rayo x de órbita y la tomografía axial de cráneo no arrojó alteraciones. Se realizó hematología completa, pruebas de coagulación, bioquímica elemental y toda la analítica fue normal. El estudio anatomopatológico reportó: infiltrado linfoide denso y extenso constituido por linfocitos pequeños, algunos de aspecto plasmocitoide, sin nucléolo y sin indentación, dichos datos sugieren proliferacion linfoide maligna. Se confirmó el diagnóstico de linfoma B de bajo grado de tipo MALT. Abstract in english The primary MALT lymphomas of the conjunctiva are uncommon, the conjunctival affection is less frequent, and its bilaterality is uncommon, representing 5% of all extranodal non- Hodgkin lymphomas. Low-grade B lymphomas derived from marginal zone lymphocytes with molecular alterations are those that [...] have blocked its apoptosis. A 12 -year- old patient with primary MALT type lymphoma of the lower tarsal conjunctiva of both eyes was presented in this paper. The patient was healthy and presented redness and discomfort in both eyes in a year of evolution. The physical examination showed discrete ptosis of the left eye of a millimeter. Mass of orange - salmon color in lower conjunctival sac of both eyes, not adhered to deep planes was observed. Orbital X-ray and cranial CT were unaltered. Complete hematology, coagulation tests, and all elemental analytical biochemistry were performed, the results were normal. The pathological study reported: dense and extensive infiltrate lymphoid, composed of small lymphocytes, some without nucleolus plasmacytoid appearance without indentation, these data suggested a malignant lymphoid proliferation. The diagnosis of low-grade B-cell lymphoma of MALT type was confirmed.

Hiram Luis, Mena Estévez; Mabel Marilín, Calderín López; Deysi Mayle, Oquendo Calderín; Hiram Alejandro, Mena Calderín; Diagnis, Rodriguez Verdecia.

2014-03-01

194

Primary cutaneous centrofollicular lymphoma with a good response to radiotherapy / Linfoma centrofolicular cutâneo primário com boa resposta a radioterapia  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: English Abstract in portuguese Os linfomas cutâneos primários têm comportamento clínico e prognóstico diferente dos linfomas sistêmicos de subtipo histológico semelhante. Cerca de 30% dos linfomas não-Hodgkin acometem tecidos extranodais, sendo a pele o segundo órgão mais envolvido após o trato gastrointestinal (aproximadamente 1 [...] 8%). De acordo com a classificação EORTC (European Organization for Research and Treatment of Cancer), o linfoma centrofolicular cutâneo é indolente, uma vez que as lesões aumentam de tamanho lentamente ao longo dos anos e a disseminação para sitios extracutâneos é incomum. Com base nisso, a radioterapia tem sido apontada como o tratamento de primeira escolha por muitos estudos. Apresentamos um caso de paciente com linfoma cutâneo centrofolicular no couro cabeludo há 1 ano e que apresentou boa resposta à radioterapia. Abstract in english Primary cutaneous lymphomas have different clinical behavior and prognosis than systemic lymphomas of similar histological subtype. About 30% of non-Hodgkin lymphomas involve extranodal tissues, the skin being the second most affected body organ after the gastrointestinal tract (approximately 18%). [...] According to the EORTC (European Organization for Research and Treatment of Cancer) classification, the lymphoma centrofollicular is indolent, since the lesions increase in size slowly over the years and spread to extracutaneous sites is uncommon. Based on this, radiotherapy has been considered the treatment of choice by many studies. We present the case of a patient who had cutaneous centrofollicular scalp lymphoma for 1 year and showed good response to radiotherapy.

Cláudia Medeiros dos Santos, Camargo; Lislaine, Bomm; Leonardo Spagnol, Abraham; Rafael, Daher; Maria de Fátima Guimarães, Scotelaro; Luna Azulay, Abulafia.

2013-12-01

195

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

Directory of Open Access Journals (Sweden)

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

2003-01-01

196

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: English Abstract in portuguese 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. Abstract in english 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-c [...] ell 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.

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

197

Greiningargeta blóðprufa og afdrif sjúklinga með Disseminated Intravascular Coagulation  

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Inngangur: Disseminated Intravascular Coagulation (DIC) er sjúkdómsástand sem fylgir sjúkdómum sem valda kerfisbundinni virkjun á blóðstorku. Við slíka virkjun myndast blóðtappar í smáum æðum sem valda skertu blóðflæði og súrefnisskorti í vef með vefjaskemmdum. Við það verður einnig aukin notkun á storkuþáttum sem getur valdið aukinni blæðingarhneigð Þó svo sýnt hafi verið fram á minnkað magn prótein C, antiplasmin og antithrombin í blóði sjúk...

Einar Hjörleifsson 1988

2012-01-01

198

Disseminated intravascular coagulation in malaria: A case report  

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Disseminated intravascular coagulation (DIC) is seen in <5% of patients with severe Plasmodium falciparum malaria and is more common in cerebral malaria. Here, we report the diagnosis and management of a case of severe P. falciparum malaria with DIC. PMID:24791054

Sailo, Laltanpuii; Pradhan, Debasis; Nongthombam, Rakesh; Bhattacharyya, Prithwis

2014-01-01

199

Treatment of Vertebro-Basilar Dissecting Aneurysms Using Intravascular Stents  

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Endovascular surgery is an established primary therapeutic modality for dissecting aneurysms at vertebro-basilar arteries. Intravascular stents can be used to treat the dissecting aneurysms for which simple obliteration procedures cannot be used. In such cases, stent implantation alone or a combination of stents and coils need to be selected properly by taking into consideration the site and shape of dissections.

Yamasaki, S.; Hashimoto, K.; Kawano, Y.; Yoshimura, M.; Yamamoto, T.; Hara, M.

2006-01-01

200

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

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Full Text Available SciELO Brazil | Language: Portuguese 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 c [...] om 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 8 [...] 0-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.

2012-06-01

201

Linfomatosis intravascular: Descripción de tres casos / Intravascular lymphomatosis: A report of three cases  

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Full Text Available SciELO Spain | Language: Spanish Abstract in spanish La linfomatosis intravascular (LIV) es una neoplasia poco frecuente caracterizada por la proliferación de células linfoides atípicas en la luz de pequeños vasos (vénulas, capilares y arteriolas). La sintomatología está causada por fénomenos trombóticos debido a la oclusión de los vasos por células t [...] umorales. Los órganos más afectados son el sistema nervioso y la piel, aunque puede estar involucrado cualquier otro sistema, sin afectación de los tejidos linfoides. Presentamos tres casos de LIV: el primero se trata de un varón de 57 años que debuta con demencia y síntomas neurológicos; un segundo caso en un paciente de 69 años con manifestaciones predominantemente pulmonares (tos, disnea y fiebre) y una mujer con fiebre de origen desconocido (FOD) y síndrome inflamatorio sistémico. Dada la ausencia de signos específicos de esta entidad multiorgánica con evolución rápidamente progresiva, su diagnóstico es postmorten en todos nuestros casos. Para su confirmación se precisó de biopsia de uno de los órganos afectados. En conclusión, consideramos la necesidad de plantear el diagnóstico diferencial con el síndrome confusional agudo, demencia o síndromes neurológicos de etiología no filiada, vasculitis, neoplasias ocultas, fiebre de origen desconocido o infecciones con afectación multiorgánica y valores muy elevados de LDH. Abstract in english Intravascular lymphomatosis (IVL) is a rare malignancy characterized by a proliferation of atypical lymphoid cells occluding small blood vessels (venules, capillaries and small arteries). The symptoms are caused by embolims due to massive proliferation. Nervous system and skin are the most common si [...] tes of involvement but all organs may be involved, although it is typified by the absence of malignant cells in lymphoid tissues. We describe three cases of IVL: first patient was a 57 years old man with rapidly progressive dementia and neurological involvements and second case of a 69 years old man hospitalised with predominant symptoms in the lung (cough, dyspnea and fever), and a woman presenting as fever of unknown origin (FUO) with systemic inflammatory response syndrome. In all cases that we reported have been diagnosed post-morten because of rapid progression of a multisystem disease and the absence of pathognomonic clinical manifestations. Diagnosis can be made using biopsy of one of the involved organs. In conclusion, we propose that IVL should be inclucled in the differential diagnosis of acute confusional state, dementia or other unexplained neurological manifestations, fever of unknown origin, vasculitis, occult neoplasia or infections with signs of a systemic disease and marked elevation of serum lactate dehydrogenase (LDH).

M. J., Menéndez Calderón; M. E., Seguí Riesco; M., Argüelles; J., Nuño Mateo.

2005-01-01

202

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  

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Full Text Available SciELO Brazil | Language: Portuguese 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 ex [...] pectativas, 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. 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 b [...] elow 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.

203

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

2004-01-01

204

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

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Full Text Available SciELO Brazil | Language: Portuguese 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 form [...] a 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. 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, chr [...] onic, 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.

2008-08-01

205

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

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Full Text Available SciELO Colombia | Language: Spanish 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 relaci [...] ona 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. 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 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.

2009-03-01

206

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

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Full Text Available SciELO Argentina | Language: Spanish 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 síndr [...] ome 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. 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 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.

2011-06-01

207

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

2011-06-01

208

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: Spanish 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 in [...] ició el cuadro con síntomas de alteración del sensorio, hipertensión endocraneana y amaurosis bilateral. El diagnóstico se efectuó por biopsia cerebral, inmunofenotipo 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 an [...] d 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 cerebrospinal 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.

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

2004-10-01

209

Linfoma não Hodgkin primário do fígado em doente com hepatite crónica a VHC  

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Os autores apresentam o caso de um homem de 43 anos, com dor abdominal e sintomas constitucionais com 3 semanas de evolução, a quem se diagnosticou tumor solido do fígado e infecção crónica a Virus da Hepatite C (VHC). O tumor era um Linfoma não Hodgkin ( LNH) tipo B, primário. O doente foi submetido a quimioterapia e a tratamento para a hepatite crónica C, com boa resposta. Os autores discutem o caso e apresentam uma revisão da litera-tura sobre a associação VHC e LNH, em particu...

Gonc?alves, M. L.; Rosa, I.; Medeiros, I.; Viveiros, C.; Talhinhas, A.; Ferna?ndez Mera, J.; Pina, F.; Queiroz, A.

2006-01-01

210

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

OpenAIRE

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...

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

2004-01-01

211

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Mexico | Language: Spanish 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 inmunof [...] enotípicas 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, estudios 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 immunohistochemical 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.

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

2004-04-01

212

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Chile | Language: Spanish 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 una 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 hoarse [...] ness of several months that progressed during the last month. Fibroscopic evaluation showed a tumor involving the right aryepiglottic fold, without mucosal lesion. Computed tomography 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.

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

2013-04-01

213

Retrieval of intravascular foreign bodies with goose neck snare  

International Nuclear Information System (INIS)

Purpose: to evaluate the efficacy and advantages of the snare systems in the retrieval of foreign bodies from vascular system. Materials and methods: the snare technique has been used for intravascular foreign body retrieval. We performed percutaneous extraction of intravascular foreign bodies using combination multipurpose catheters and a nitinol snare loop. In this report, we evaluated the patients who had performed endovascular device reposition or foreign body retrieval from 1998 to 2001. Results: foreign body retrieval was performed in 15 patients. The foreign bodies consisted of seven fractured port catheters, one sheath fragment, one embolization coil, four wire fragments, one pace-maker transducer and one dislocated endovascular stent. In no case were surgical procedures required, and no complications were encountered. Conclusion: the snare technique is a useful and a safe method as an alternative procedure to surgery. This technique is highly effective with low rate complications

214

Retrieval of intravascular foreign bodies with goose neck snare  

Energy Technology Data Exchange (ETDEWEB)

Purpose: to evaluate the efficacy and advantages of the snare systems in the retrieval of foreign bodies from vascular system. Materials and methods: the snare technique has been used for intravascular foreign body retrieval. We performed percutaneous extraction of intravascular foreign bodies using combination multipurpose catheters and a nitinol snare loop. In this report, we evaluated the patients who had performed endovascular device reposition or foreign body retrieval from 1998 to 2001. Results: foreign body retrieval was performed in 15 patients. The foreign bodies consisted of seven fractured port catheters, one sheath fragment, one embolization coil, four wire fragments, one pace-maker transducer and one dislocated endovascular stent. In no case were surgical procedures required, and no complications were encountered. Conclusion: the snare technique is a useful and a safe method as an alternative procedure to surgery. This technique is highly effective with low rate complications.

Koseoglu, Kutsi E-mail: kutsikoseoglu@yahoo.com; Parildar, Mustafa; Oran, Ismail; Memis, Ahmet

2004-03-01

215

Analyses on molecular mechanisms of activation of intravascular Tissue Factor  

OpenAIRE

Both activated platelets and circulating microparticles were described to express tissue factor (TF), the principal initiator of coagulation, on their cell surface (intravascular TF). It is still not clear whether TF is functionally active on activated platelets. TF expressed on activated monocytes and various other cell types has been described to be functionally inactive (encrypted or latent TF). In the present study, cellular mechanisms are analyzed that could release the TF procoagulant a...

Reinhardt, Christoph

2007-01-01

216

An Axial Array for Volumetric Intravascular Ultrasound Imaging:  

OpenAIRE

Intravascular ultrasound (IVUS) is a medical imaging modality aimed at imaging blood vessel walls from within the vessel. Current commercial IVUS catheters are designed to yield two-dimensional cross-sectional images perpendicular to the vessel wall. By pulling the catheter back through the artery (in the ‘axial direction’), and stacking the resulting cross-sectional images, a three-dimensional image of the artery can be obtained. However, in non-stationary blood vessels like, e.g., the c...

Alles, E. J.

2012-01-01

217

Quantitative blood flow as assessed by intravascular ultrasound  

OpenAIRE

The aim of the present study was to develop the correlation-based method for quantitative blood flow for intravascular ultrasound purposes. The feasibility of the technique was studied by means of computer simulations, in vitro and in animal measurements, and in patient validation. A general overview in IVUS flow is presented (Chapter 2). Computer simulations were implemented for the study of the decorrelation characteristics of the ultrasound beam from the lVUS array cathet...

Lupotti, F. A.

2002-01-01

218

Mechanotransductional Basis of Endothelial Cell Response to Intravascular Bubbles  

OpenAIRE

Vascular air embolism resulting from too rapid decompression is a well-known risk in deep-sea diving, aviation and space travel. It is also a common complication during surgery or other medical procedures when air or other endogenously administered gas is entrained in the circulation. Preventive and post-event treatment options are extremely limited for this dangerous condition, and none of them address the poorly understood pathophysiology of endothelial response to intravascular bubble pres...

Klinger, Alexandra L.; Pichette, Benjamin; Sobolewski, Peter; Eckmann, David M.

2011-01-01

219

Novel biopolymers to enhance endothelialisation of intra-vascular devices.  

Science.gov (United States)

Rapid endothelisation is of critical importance in the prevention of adverse remodelling after device implantation. Currently, there is a need for alternative strategies to promote re-endothelialisation for intravascular stents and vascular grafts. Using polymer microarray technology 345 polymers are comprehensively assessed and a matrix is identified that specifically supports both progenitor and mature endothelial cell activity in vitro and in vivo while minimising platelet attachment. PMID:23184801

Pernagallo, Salvatore; Tura, Olga; Wu, Mei; Samuel, Kay; Diaz-Mochon, Juan J; Hansen, Anna; Zhang, Rong; Jackson, Melany; Padfield, Gareth J; Hadoke, Patrick W F; Mills, Nicholas L; Turner, Marc L; Iredale, John P; Hay, David C; Bradley, Mark

2012-09-01

220

Disseminated Intravascular Coagulation with Acutely-Thrombosed Popliteal Aneurysm  

OpenAIRE

Disseminated intravascular coagulation (DIC) is an extremely rare complication of acute thrombosis in popliteal aneurysms and makes it difficult to restore the blood flow with thrombolytic therapy or surgical repair. A 75-year-old man with a history of hypertension presented to the emergency department with complaints of right leg pain and bleeding tendency over a 5-day period. The laboratory findings and multislice computed tomography were suggestive of overt DIC caused by acute thrombosis i...

Ichibori, Yasuhiro; Shintani, Hideo; Okuhara, Yoshitaka; Shibamoto, Masato; Yoshida, Akira; Sato, Fumi; Yamada, Takayuki; Hatsuoka, Shinichi

2010-01-01

221

SEPSIS-ASSOCIATED DISSEMINATED INTRAVASCULAR COAGULATION AND THROMBOEMBOLIC DISEASE  

OpenAIRE

Sepsis is almost invariably associated with haemostatic abnormalities ranging from subclinical activation of blood coagulation (hypercoagulability), which may contribute to localized venous thromboembolism, to acute disseminated intravascular coagulation (DIC), characterized by massive thrombin format...

Ammollo, Concetta T.; Nicola Semeraro; Fabrizio Semeraro; Mario Colucci

2010-01-01

222

Classifying types of disseminated intravascular coagulation: clinical and animal models  

OpenAIRE

Disseminated intravascular coagulation (DIC) has a common pathogenesis in terms of persistent widespread activation of coagulation in the presence of underlying disease, but the degree of fibrinolytic activation often differs by DIC type. DIC with suppressed fibrinolysis is a DIC type usually seen in sepsis. Coagulation activation is severe, but fibrinolytic activation is mild. DIC with enhanced fibrinolysis is a DIC type usually seen in acute promyelocytic leukemia (APL). Both coagulation ac...

Asakura, Hidesaku

2014-01-01

223

Disseminated Intravascular Coagulation syndrome — ENT surgeon’s perspective  

OpenAIRE

ENT surgeon is seldom confronted with a systemic disease severe enough to progress to Disseminated Intravascular Coagulation syndrome (DIC), where he has to undertake a definitive surgical procedure for malignancy or perform an emergency tracheostomy. This calls for a judicious calculation of the pros and cons with an element of risk that needs to be accepted. We report two such patients who have been treated in such a scenario where the outcome varied depending on the severity and time of on...

Ravikumar, A.; Sasindran, Vivek; Senthil, K.; Samuel, John; Thirumaran

2006-01-01

224

Plasma Factor XIII Activity in Patients with Disseminated Intravascular Coagulation  

OpenAIRE

The objective of this study was to investigate the correlation between factor XIII (FXIII) activity and disseminated intravascular coagulation (DIC) parameters and also to evaluate the clinical usefulness of DIC diagnosis. Citrated plasma from eighty patients with potential DIC was analyzed for FXIII activity. The primary patient conditions (48 male and 32 female, mean age, 51 years) were malignancy (n = 29), infection (n = 25), inflammation (n = 6), heart disease (n = 3), thrombosis (n = 2),...

Song, Jae Woo; Choi, Jong Rak; Song, Kyung Soon; Rhee, Ji-hyuk

2006-01-01

225

Disseminated intravascular coagulation, antiphospholipid antibodies, and ischaemic necrosis of extremities.  

OpenAIRE

A middle aged woman presented with acute, severe, intravascular coagulation leading to ischaemic necrosis of the extremities. Pulmonary involvement required artificial ventilation, and there was evidence of hepatic, pancreatic, and renal damage, which resolved without complication. These events may have been triggered by the ingestion of compound diuretic tablets. The finding of the 'lupus anticoagulant' and anticardiolipin antibodies, together with high titre antinuclear factor in the serum,...

Bird, A. G.; Lendrum, R.; Asherson, R. A.; Hughes, G. R.

1987-01-01

226

Evaluation of Disseminated Intravascular Coagulation in the Craniocerebral Traumas  

OpenAIRE

Traumatic injury is one of the most important cause of disseminated intravascular coagulation (DIC). It occurs because of blood loss and hemodilution due to fluid resuscitation. The incidence of trauma associated DIC is mainly higher in the craniocerebral traumas. Even though craniocerebral trauma related DIC is well defined, the pathophysiology has been poorly characterized in the literature. Due to the fact that brain tissue is highly significant for procoagulant molecules, craniocerebra...

Faruk Altinel

2014-01-01

227

Disseminated intravascular coagulation after isolated mild head injury.  

OpenAIRE

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 outcome. Post-operative recollection of subdural and extadural blood was treated by further surgery. DIC following isolated mild head injury without axonal damage is rare, but fatal if missed. Thrombocy...

Pereira, Ea; Green, Al; Chandran, H.; Joshi, Sm; Shlugman, D.; Cudlip, Sa

2009-01-01

228

Liver abscess and disseminated intravascular coagulation in tuberculosis.  

OpenAIRE

We report the case of a 55-year-old man with chronic renal failure, and a history of prolonged fever and jaundice. Radiological studies revealed a multiloculated irregular liver abscess. Mycobacterium tuberculosis was isolated from the abscess on smear and culture of aspirated pus. Haematological studies revealed the presence of disseminated intravascular coagulation. A detailed search failed to identify any reason for this other than the tuberculous infection. The treatment of tuberculous li...

Nampoory, M. R.; Halim, M. M.; Sreedharan, R.; Al-sweih, N. A.; Gupta, R. K.; Constandi, J. N.; Johny, K. V.

1995-01-01

229

Pulmonary infarction, myocardial infarction, and acute disseminated intravascular coagulation.  

OpenAIRE

Pulmonary and myocardial damage are frequently cited as manifestations of disseminated intravascular coagulation (DIC), but rarely as causes. Three elderly cases of severe DIC due to pulmonary and myocardial infarction are reported. All three patients died. Necropsy showed extensive pulmonary emboli in each case with large pulmonary infarcts in cases 1 and 2 and a ventricular aneurysm containing thrombus in cases 2 and 3. Early diagnosis and treatment of pulmonary embolism requires a high deg...

Thomson, F. J.; Benbow, E. W.; Mcmahon, R. F.; Cheshire, C. M.

1991-01-01

230

Disseminated intravascular coagulation complicating HELLP syndrome: perioperative management  

OpenAIRE

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 continuous epistaxis and elective tracheal intubation was carried out. During emergency caesarean section the patient was managed with blood products, antihypertensive drugs and general anaesthesia ...

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

2009-01-01

231

Scanning electron microscopy of bacteria adherent to intravascular catheters.  

OpenAIRE

Scanning electron microscopy was used to assess the morphological features of coagulase-negative staphylococci adherent to polyvinylchloride intravascular catheter specimens. Clinical specimens were obtained by using patient catheters from which coagulase-negative staphylococci (greater than or equal to 15 colonies per catheter) grew on semiquantitative blood agar roll cultures. In vitro specimens were prepared by a previously published technique in which sterile polyvinylchloride catheters w...

Franson, T. R.; Sheth, N. K.; Rose, H. D.; Sohnle, P. G.

1984-01-01

232

COAGULACIÓN INTRAVASCULAR DISEMINADA SECUNDARIA A ANEURISMA AÓRTICO DIAGNOSTICADA TRAS EXTRACCIÓN DENTAL  

OpenAIRE

RESUMEN:Las manifestaciones de la coagulación intravascular diseminada (CID) están determinadas por la causa subyacente; sin embargo, en los casos de CID compensada el diagnóstico se basa en las pruebas de laboratorio.Presentamos el caso de un varón de 81 años al que se diagnostico de una coagulación intravascular diseminada secundaria a un aneurisma gigante de ambas ilíacas tras una extracción dentaria. SUMMARYThe clinical presentation of disseminated intravascular coagulopathy (DIC)...

Mv, Cuevas-ruiz; De la Nogal B; Cuevas-Ruiz B

2006-01-01

233

Combined intravascular photoacoustic and ultrasound imaging imaging of atherosclerotic calcification in human artery  

Science.gov (United States)

Intravascular ultrasound (IVUS) is mature imaging modality to diagnose blood vessel disease, especially for calcification characterization. Based on the intrinsic optical absorption, intravascular photoacoustic (IVPA) works as a complementary method to IVUS. In this paper, we develop a miniature intravascular probe combined photoacoustic and ultrasound imaging. The optical components and ultrasound transducer were integrated to achieve internal illumination. Atherosclerotic human artery was imaged ex vivo, which demonstrates the imaging ability of the multi-functional probe and illustrate its clinical potential.

Wei, Wei; Li, Xiang; Zhou, Qifa; Shung, K. Kirk; Chen, Zhongping

2012-03-01

234

Asian-variant intravascular lymphoma in the African race  

Directory of Open Access Journals (Sweden)

Full Text Available Intravascular large B-cell lymphoma (IVLBCL is an exceptionally rare form of non- Hodgkin lymphoma (NHL distinguished by the preferential growth of neoplastic cells within blood vessel lumen. Challenging to detect and deemed disseminated at diagnosis, this condition is characterized by a highly aggressive, inconspicuous course with a high mortality rate. We describe the case of a 48 year-old African-American female presenting with a two month history of low-grade fevers and malaise. Laboratory data was notable for anemia, thrombocytopenia, elevated liver function tests, and hematuria. An extensive workup for infectious, rheumatologic and malignant causes was negative. Her symptoms progressed and within two weeks, she was admitted for disseminated intravascular coagulation (DIC. Her course was complicated by diffuse pulmonary hemorrhage and ultimately, care was withdrawn. Autopsy identified widespread CD-20 positive intravascular large B-cell lymphoma with significant hepatosplenic involvement, characteristic of the Asian variant IVLBCL. This case uniquely highlights development of the Asian variant IVLBVL in a previously undescribed race. Identified by its intraluminal vascular growth pattern, IVLBCL generally spares lymphatic channels. Diagnosis and differentiation of this condition from other hematological malignancies via skin, visceral and bone marrow biopsy is imperative as anthracycline-containing chemotherapies may significantly improve clinical outcomes. This article outlines the common presentation, natural course, and treatment options of IVLBCL, along with the histopathology, immunohistochemistry, and chromosomal aberrations common to this condition.

Brian Palen

2012-01-01

235

A novel ionization chamber for dosimetry in intravascular brachytherapy  

International Nuclear Information System (INIS)

A novel ionization chamber for the dosimetry and quality assurance program of beta particle emitting radioactive sources (in the form of wires or seed trains) used in the intravascular brachytherapy of coronary disease has been devised and investigated. It has a cylindrical shape, and a catheter, housing the source (a wire or seeds), passes through the chamber along its axis. The new type of ionization chamber is called the ring ionization chamber (RIC). Owing to its similarity to a cylindrical ionization chamber, the well-established dosimetric protocol can be applied to determine the absorbed dose-to-air chamber calibration factor, ND, as well as the absorbed dose-to-water calibration factor, ND,W. Owing to this similarity, the overall uncertainty in the standardization of the absorbed dose for beta radioactive sources used in intravascular brachytherapy could be substantially reduced compared with that presently achieved. The RIC can be implemented into a new code of practice for dose standardization and quality assurance in intravascular brachytherapy. An example of practical application of a model of RIC for dosimetry of 32P radioactive source is presented

236

Linfoma do tecido linfóide associado ao brônquio com evolução fatal / Fatal outcome in bronchus-associated lymphoid tissue lymphoma  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese Abstract in portuguese Linfomas primários do pulmão são raros. O tipo histológico mais freqüente é o linfoma do tecido linfóide associado ao brônquio. Este tipo de linfoma tem curso indolente e excelente resposta à terapia. Um terço dos casos é descoberto incidentalmente. Devido à raridade desta doença, no entanto, pouco [...] se conhece sobre sua história natural em termos de disseminação e evolução. Neste relato, descrevemos o caso incomum de um homem de 61 anos que recusou o tratamento após diagnóstico de linfoma do tecido linfóide associado ao brônquio e, 2 anos após o diagnóstico, morreu por infiltração pulmonar maciça sem disseminação para outros órgãos. Abstract in english Primary pulmonary lymphoma is rare. The most common histological type is the bronchus-associated lymphoid tissue lymphoma. This type of lymphoma has an indolent course and excellent response to therapy. One-third of all cases are diagnosed incidentally. However, due to the rarity of this disease, li [...] ttle is known about its natural history in terms of dissemination and evolution. Herein, we report the unusual case of a 61-year-old man who refused treatment after being diagnosed with bronchus-associated lymphoid tissue lymphoma and died 2 years later from massive lung infiltration without dissemination to other organs.

Romulo Loss, Mattedi; Fabiola del Carlo, Bernardi; Carlos Eduardo, Bacchi; Sheila Aparecida Coelho, Siqueira; Thais, Mauad.

2007-08-01

237

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

Directory of Open Access Journals (Sweden)

Full Text Available 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 masses 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.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 mostrou 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.

Marcelo Corti

2007-06-01

238

Do current indications for surgery of primary gastric lymphoma exist? ¿Existen indicaciones actuales para la cirugía en el linfoma gástrico?  

Directory of Open Access Journals (Sweden)

Full Text Available Objective: to analyze the results of our series in order to assess whether surgical excision is still a valid therapeutic option in case the patient needs surgery. Secondarily, to analyze Helicobacter pylori infection rate. Patients and method: a retrospective study of 69 consecutive patients having stage IE-IIE primary gastric lymphoma; of these, 65 were treated by gastrectomy between 1974 and 1999. Mean age: 62.6 years (28-85. New staining of paraffin-embedded samples from the surgical specimen were carried out (hematoxiline-eosine, Giemsa, immunohistochemistry and reviewed. The histological classification was performed according to Isaacson's criteria. The statistical analysis was done by Chi-squared and Fisher's exact tests, as well as Kaplan-Meier and Log-Rank tests. Results: mortality was 9.2%. There were non-fatal complications in 10.8%. Helicobacter pylori was identified in 62.7%. Seven patients (11.9% suffered a relapse. The 5-year survival probability was 87%. The statistical analysis did not show any influences of Ann Arbor stage, gastric wall invasion, Helicobacter pylori infection, histological type, or margin resection involvement on survival. Conclusions: surgical excision provides a high rate of complete remissions and excellent long-term survival with acceptable mortality. Therefore it appears to be a valid treatment in case of emergency surgery, incidental finding, or lack of histological diagnosis.Objetivo: analizar los resultados de nuestra serie a fin de establecer si la extirpación quirúrgica continúa siendo una opción terapéutica válida para las situaciones en las que pudiera precisarse cirugía. Como objetivo secundario, analizar la prevalencia de infección por Helicobacter pylori. Pacientes y método: estudio retrospectivo de 69 pacientes consecutivos diagnosticados de linfoma gástrico primario, en estadio I E y II E de Ann Arbor, 65 de los cuales fueron tratados mediante gastrectomía entre 1974 y 1999. Edad media: 62,6 años (28-85. En 60 casos se revisó la histología de la pieza de resección con nuevas tinciones (hematoxilina-eosina, Giemsa, y estudio inmunohistoquímico de los bloques de parafina. La clasificación histológica se realizó de acuerdo con la clasificación de Isaacson. El análisis estadístico se realizó mediante las pruebas de Chi cuadrado y prueba exacta de Fisher y Kaplan-Meier y Log-Rank para el análisis de supervivencia. Resultados: la mortalidad fue de 9,2%. Se produjeron complicaciones no mortales en 10,8%. Se identificó Helicobacter pylori en 62,7%. Se produjo recaída en 7 pacientes (11,9%. La probabilidad de supervivencia fue de 87% a 5 años. El análisis estadístico no demostró influencia del estadio de Ann Arbor, invasión en la pared gástrica, infección por Helicobacter pylori, tipo histológico, ni afectación de bordes sobre la supervivencia. Conclusiones: la extirpación quirúrgica posibilita un alto grado de remisión completa y una excelente supervivencia a largo plazo, con mortalidad aceptable, por lo que es un tratamiento válido en caso de ausencia de diagnóstico histológico, hallazgo incidental o urgencia.

J. C. Rodríguez-Sanjuán

2006-03-01

239

Do current indications for surgery of primary gastric lymphoma exist? / ¿Existen indicaciones actuales para la cirugía en el linfoma gástrico?  

Scientific Electronic Library Online (English)

Full Text Available SciELO Spain | Language: English Abstract in spanish Objetivo: analizar los resultados de nuestra serie a fin de establecer si la extirpación quirúrgica continúa siendo una opción terapéutica válida para las situaciones en las que pudiera precisarse cirugía. Como objetivo secundario, analizar la prevalencia de infección por Helicobacter pylori. Pacien [...] tes y método: estudio retrospectivo de 69 pacientes consecutivos diagnosticados de linfoma gástrico primario, en estadio I E y II E de Ann Arbor, 65 de los cuales fueron tratados mediante gastrectomía entre 1974 y 1999. Edad media: 62,6 años (28-85). En 60 casos se revisó la histología de la pieza de resección con nuevas tinciones (hematoxilina-eosina, Giemsa), y estudio inmunohistoquímico de los bloques de parafina. La clasificación histológica se realizó de acuerdo con la clasificación de Isaacson. El análisis estadístico se realizó mediante las pruebas de Chi cuadrado y prueba exacta de Fisher y Kaplan-Meier y Log-Rank para el análisis de supervivencia. Resultados: la mortalidad fue de 9,2%. Se produjeron complicaciones no mortales en 10,8%. Se identificó Helicobacter pylori en 62,7%. Se produjo recaída en 7 pacientes (11,9%). La probabilidad de supervivencia fue de 87% a 5 años. El análisis estadístico no demostró influencia del estadio de Ann Arbor, invasión en la pared gástrica, infección por Helicobacter pylori, tipo histológico, ni afectación de bordes sobre la supervivencia. Conclusiones: la extirpación quirúrgica posibilita un alto grado de remisión completa y una excelente supervivencia a largo plazo, con mortalidad aceptable, por lo que es un tratamiento válido en caso de ausencia de diagnóstico histológico, hallazgo incidental o urgencia. Abstract in english Objective: to analyze the results of our series in order to assess whether surgical excision is still a valid therapeutic option in case the patient needs surgery. Secondarily, to analyze Helicobacter pylori infection rate. Patients and method: a retrospective study of 69 consecutive patients having [...] stage IE-IIE primary gastric lymphoma; of these, 65 were treated by gastrectomy between 1974 and 1999. Mean age: 62.6 years (28-85). New staining of paraffin-embedded samples from the surgical specimen were carried out (hematoxiline-eosine, Giemsa, immunohistochemistry) and reviewed. The histological classification was performed according to Isaacson's criteria. The statistical analysis was done by Chi-squared and Fisher's exact tests, as well as Kaplan-Meier and Log-Rank tests. Results: mortality was 9.2%. There were non-fatal complications in 10.8%. Helicobacter pylori was identified in 62.7%. Seven patients (11.9%) suffered a relapse. The 5-year survival probability was 87%. The statistical analysis did not show any influences of Ann Arbor stage, gastric wall invasion, Helicobacter pylori infection, histological type, or margin resection involvement on survival. Conclusions: surgical excision provides a high rate of complete remissions and excellent long-term survival with acceptable mortality. Therefore it appears to be a valid treatment in case of emergency surgery, incidental finding, or lack of histological diagnosis.

J. C., Rodríguez-Sanjuán; R. A., García; S., Trugeda; F. de la, Torre; J., Llorca; M., Gómez-Fleitas.

2006-03-01

240

Linfoma não Hodgkin primário do fígado em doente com hepatite crónica a VHC  

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Full Text Available Os autores apresentam o caso de um homem de 43 anos, com dor abdominal e sintomas constitucionais com 3 semanas de evolução, a quem se diagnosticou tumor solido do fígado e infecção crónica a Virus da Hepatite C (VHC. O tumor era um Linfoma não Hodgkin ( LNH tipo B, primário. O doente foi submetido a quimioterapia e a tratamento para a hepatite crónica C, com boa resposta. Os autores discutem o caso e apresentam uma revisão da litera-tura sobre a associação VHC e LNH, em particular o LNH primário do fígado, e o eventual papel do virus na génese de linfomas.The authors present the case of a 43 year old man, with abdominal pain and constitutional symptoms during 3 weeks, in whom was diagnosed a solid liver tumor and chronic hepatitis C. The tumor was a primary cell B non-Hodgkin Lymphoma (LNH. The patient was submitted to chemotherapy and treatment for hepatitis C with a favourable response. The authors discuss the case and present a review on the VHC and LNH association, the primary hepatic lymphoma in particular, and the possible role of the virus in lymphomagenesis.

M. L. Gonçalves

2006-07-01

241

Linfoma não Hodgkin primário do fígado em doente com hepatite crónica a VHC  

Scientific Electronic Library Online (English)

Full Text Available SciELO Portugal | Language: Portuguese Abstract in portuguese Os autores apresentam o caso de um homem de 43 anos, com dor abdominal e sintomas constitucionais com 3 semanas de evolução, a quem se diagnosticou tumor solido do fígado e infecção crónica a Virus da Hepatite C (VHC). O tumor era um Linfoma não Hodgkin ( LNH) tipo B, primário. O doente foi submetid [...] o a quimioterapia e a tratamento para a hepatite crónica C, com boa resposta. Os autores discutem o caso e apresentam uma revisão da litera-tura sobre a associação VHC e LNH, em particular o LNH primário do fígado, e o eventual papel do virus na génese de linfomas. Abstract in english The authors present the case of a 43 year old man, with abdominal pain and constitutional symptoms during 3 weeks, in whom was diagnosed a solid liver tumor and chronic hepatitis C. The tumor was a primary cell B non-Hodgkin Lymphoma (LNH). The patient was submitted to chemotherapy and treatment for [...] hepatitis C with a favourable response. The authors discuss the case and present a review on the VHC and LNH association, the primary hepatic lymphoma in particular, and the possible role of the virus in lymphomagenesis.

M. L., Gonçalves; I., Rosa; I., Medeiros; C., Viveiros; A., Talhinhas; J. Fernândez, Mera; F., Pina; A., Queiroz.

2006-07-01

242

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: English 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.

Bertrand, Coiffier.

243

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

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Full Text Available 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 linfoma 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.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.

C. N. Pisoni

2003-06-01

244

Estratificação de risco em linfoma difuso de grandes células B Risk stratification of large B-cell lymphomas  

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Full Text Available O linfoma difuso de grandes células B (LDGCB é uma entidade clínico-patológica heterogênea que corresponde de 30% a 35% dos casos de linfoma não-Hodgkin (LNH. É considerado como agressivo porque a sobrevida é curta na ausência de tratamento adequado. Desde 1993 o tratamento deste linfoma passou a ser direcionado pelo índice internacional de prognóstico (IPI validado em vários estudos. Entretanto, diante das diferentes respostas à mesma terapêutica para pacientes de mesmo IPI houve necessidade de se instituírem novos marcadores de prognóstico para pacientes com LDGCB. Com os avanços do conhecimento biológico destes linfomas, outras variáveis começam a ser utilizadas na estratificação de risco destes linfomas. Nesta revisão abordamos os principais marcadores biológicos utilizados como fatores de prognóstico para o tratamento de pacientes com LDGCB.Diffuse large B-cell lymphoma is a heterogeneous clinical pathological entity which accounts for about 30% to 35% of all non-Hodgkin's lymphoma cases. It is considered to be aggressive due to the patient's short survival time when incorrect treatment is provided. Since 1993, treatment has been carried out according to IPI, which has been validated in several studies. However, since there are different responses from patients with the same IPI submitted to similar therapies, new prognostic markers are needed for these patients. As the biological nature of such lymphomas is becoming better known, other variables are starting to be used in order to stratify risk. In this review we will approach the key biological markers used as prognostic factors to treat diffuse Large B-Cell Lymphoma patients.

Abrahão E. Hallack Neto

2006-12-01

245

Estratificação de risco em linfoma difuso de grandes células B / Risk stratification of large B-cell lymphomas  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese Abstract in portuguese O linfoma difuso de grandes células B (LDGCB) é uma entidade clínico-patológica heterogênea que corresponde de 30% a 35% dos casos de linfoma não-Hodgkin (LNH). É considerado como agressivo porque a sobrevida é curta na ausência de tratamento adequado. Desde 1993 o tratamento deste linfoma passou a [...] ser direcionado pelo índice internacional de prognóstico (IPI) validado em vários estudos. Entretanto, diante das diferentes respostas à mesma terapêutica para pacientes de mesmo IPI houve necessidade de se instituírem novos marcadores de prognóstico para pacientes com LDGCB. Com os avanços do conhecimento biológico destes linfomas, outras variáveis começam a ser utilizadas na estratificação de risco destes linfomas. Nesta revisão abordamos os principais marcadores biológicos utilizados como fatores de prognóstico para o tratamento de pacientes com LDGCB. Abstract in english Diffuse large B-cell lymphoma is a heterogeneous clinical pathological entity which accounts for about 30% to 35% of all non-Hodgkin's lymphoma cases. It is considered to be aggressive due to the patient's short survival time when incorrect treatment is provided. Since 1993, treatment has been carri [...] ed out according to IPI, which has been validated in several studies. However, since there are different responses from patients with the same IPI submitted to similar therapies, new prognostic markers are needed for these patients. As the biological nature of such lymphomas is becoming better known, other variables are starting to be used in order to stratify risk. In this review we will approach the key biological markers used as prognostic factors to treat diffuse Large B-Cell Lymphoma patients.

Abrahão E., Hallack Neto; Juliana, Pereira; Rosaura, Saboya; Beatriz, Beitler; Luis Fernando, Pracchia; Frederico L., Dulley; Dalton A. F., Chamone.

2006-12-01

246

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

2004-12-01

247

La crítica de Hicks al Tratado del Dinero de Keynes  

OpenAIRE

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

248

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  

Scientific Electronic Library Online (English)

Full Text Available SciELO Cuba | Language: Spanish 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 198 [...] 9 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. 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 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.

2011-06-01

249

O transplante de células-tronco hematopoéticas no tratamento dos linfomas não Hodgkin Hematopoietic stem cell transplantation for non-Hodgkin lymphomas  

OpenAIRE

No final da década de 70, ocorreu o primeiro relato de sucesso com a utilização de quimioterapia de alta dose, seguida de transplante de células-tronco hematopoéticas autólogo (TCTH auto), em pacientes com linfoma não Hodgkin (LNH). Desde então, o TCTH autólogo vem se constituindo em um importante instrumento na estratégia de tratamento dos LNH. Inúmeros estudos, em vários subtipos de linfomas, têm consolidado o papel do TCTH autólogo, principalmente como resgate em recidivas de...

Renata Baldissera; Ricardo Bigni; Haallack Neto, Abraha?o E.; Dias, Daniela F.; Souza, Robenilson A.; Chiattone, Carlos S.; Souza, Ca?rmino A.

2010-01-01

250

Linfoma no Hodgkin difuso de células grandes B del sistema nervioso central con afectación cerebral en pacientes inmunocompetentes e inmunodeprimidos. Características en neuroimagen. Estudio de supervivencia  

OpenAIRE

El linfoma primario del sistema nervioso central (LPSNC) es un linfoma no Hodgkin, agresivo que se origina más frecuentemente en el cerebro pero puede envolver las leptomeninges, ojos y médula espinal, y no presenta evidencia de infiltración linfomatosa en otra localización en el momento del diagnóstico. La etiopatogenia es desconocida. La incidencia del LPSNC aumentó significativamente en las décadas anteriores, en la actualidad parece haberse estabilizado o aumentado discretame...

Sobrido Sampedro, Carolina

2013-01-01

251

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  

OpenAIRE

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. Re...

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

2013-01-01

252

Linfomas não-Hodgkin extranodais em Salvador-Bahia: aspectos clínicos e classificação histopatológica segundo a OMS-2001 Extranodal non-Hodgkins lymphomas in Salvador, Brazil: clinical aspects and histopathological classification according to the WHO-2001 guidelines  

OpenAIRE

Linfomas não-Hodgkin (LNH) extranodais representam cerca de um terço de todos os linfomas e atualmente apresentam taxa de incidência maior que a de linfomas nodais. Diferenças entre LNH nodais e extranodais incluem etiologia, formas de apresentação e resposta terapêutica, entretanto não dispomos de dados na nossa população. Este estudo teve como objetivo caracterizar os LNH extranodais diagnosticados no Hospital Aristides Maltez, em Salvador-Bahia. Foram avaliados, retrospectivament...

Silva Neto, Marinho M.; Jalil, Emi?lia M.; Arau?jo, Iguaracyra B. O.

2008-01-01

253

O papel da Fludarabina no tratamento dos linfomas não Hodgkin de baixo grau de malignidade The role of Fludarabine in the treatment of low-grade non-Hodgkin's lymphomas  

OpenAIRE

Dentro das perspectivas futuras do tratamento dos linfomas não Hodgkin (LMH) está aquela de melhorar os resultados com os denominados linfomas de baixo grau de malignidade. Dentro do estado-da-arte atual, este grupo de linfomas pode ser considerado incurável. Desde o observar-e-esperar até o transplante alogênico de medula óssea, muitas dúvidas existem e devem ser esclarecidas. O objetivo desta revisão é de apresentar e discutir a utilização da Fludarabina , isolada ou associada à...

Gino Santini; Souza, Ca?rmino A.

2001-01-01

254

Aplicação do índice prognóstico internacional em pacientes com linfoma difuso de grandes células B em uma instituição brasileira The use of the international prognostic index in a Brazilian institution for patients suffering from diffuse large B-cell lymphoma  

Directory of Open Access Journals (Sweden)

Full Text Available O linfoma difuso de grandes células B (LDGCB corresponde a 50% dos casos de linfoma não-Hodgkin (LNH. A partir de 1993, o tratamento destes pacientes passou a ser direcionado pelo Índice Internacional de Prognóstico (IPI validado em vários estudos. Entretanto a aplicação do IPI ainda não foi avaliada em nossa população e em nossas condições socioeconômicas. Neste estudo avaliamos o impacto do IPI ajustado para a idade (IPIa na remissão completa (RC, sobrevida global (SG e sobrevida livre de doença (SLD dos portadores de LDGCB com idade inferior a 60 anos, tratados no Serviço de Hematologia do HCFMUSP. Dos 111 pacientes avaliados, 60 foram classificados com IPIa de risco baixo e intermediário e 51 IPIa de risco intermediário alto e alto. Os pacientes de risco baixo e intermediário foram analisados em conjunto no grupo de baixo risco adaptado e os de risco intermediário alto e alto no grupo de alto risco adaptado. Verificamos que a SG e a SLD foram influenciadas pelo estádio clínico, DHL e o estado funcional dos pacientes. Recomendamos o uso sistemático do IPI no tratamento dos nossos pacientes com LDGCB em nossa instituição.Diffuse Large B-Cell Lymphomas (DLBCL correspond to 50% of non-Hodgkin's lymphomas. Since 1993 the treatment of these patients has been directed by the International Prognostic Index (IPI, validated in several studies. However, the use of the IPI has not been evaluated in our population and social-economical conditions. In this study, we evaluate the impact of the age-adapted IPI (aIPI in the complete response, overall survival and disease-free survival in under 60-year-old DLBCL sufferers treated in the Hematology Service of HCFMUSP. Of the 111 evaluated patients, 60 were classified as aIPI low and intermediate risk and 51 as aIPI intermediate-high and high risk. The patients with low and intermediate risk were analyzed as a whole with adapted low risk and patients with intermediate-high and high risk with the adapted high risk. We verified that the overall survival and disease-free survival were influenced by the clinic stage, LDH value and patients performance status. We recommend the regular use of IPI in the treatment of the patients with DLBCL in our institution.

Abrahão E. Hallack Neto

2005-03-01

255

Aplicação do índice prognóstico internacional em pacientes com linfoma difuso de grandes células B em uma instituição brasileira / The use of the international prognostic index in a Brazilian institution for patients suffering from diffuse large B-cell lymphoma  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese Abstract in portuguese O linfoma difuso de grandes células B (LDGCB) corresponde a 50% dos casos de linfoma não-Hodgkin (LNH). A partir de 1993, o tratamento destes pacientes passou a ser direcionado pelo Índice Internacional de Prognóstico (IPI) validado em vários estudos. Entretanto a aplicação do IPI ainda não foi aval [...] iada em nossa população e em nossas condições socioeconômicas. Neste estudo avaliamos o impacto do IPI ajustado para a idade (IPIa) na remissão completa (RC), sobrevida global (SG) e sobrevida livre de doença (SLD) dos portadores de LDGCB com idade inferior a 60 anos, tratados no Serviço de Hematologia do HCFMUSP. Dos 111 pacientes avaliados, 60 foram classificados com IPIa de risco baixo e intermediário e 51 IPIa de risco intermediário alto e alto. Os pacientes de risco baixo e intermediário foram analisados em conjunto no grupo de baixo risco adaptado e os de risco intermediário alto e alto no grupo de alto risco adaptado. Verificamos que a SG e a SLD foram influenciadas pelo estádio clínico, DHL e o estado funcional dos pacientes. Recomendamos o uso sistemático do IPI no tratamento dos nossos pacientes com LDGCB em nossa instituição. Abstract in english Diffuse Large B-Cell Lymphomas (DLBCL) correspond to 50% of non-Hodgkin's lymphomas. Since 1993 the treatment of these patients has been directed by the International Prognostic Index (IPI), validated in several studies. However, the use of the IPI has not been evaluated in our population and social [...] -economical conditions. In this study, we evaluate the impact of the age-adapted IPI (aIPI) in the complete response, overall survival and disease-free survival in under 60-year-old DLBCL sufferers treated in the Hematology Service of HCFMUSP. Of the 111 evaluated patients, 60 were classified as aIPI low and intermediate risk and 51 as aIPI intermediate-high and high risk. The patients with low and intermediate risk were analyzed as a whole with adapted low risk and patients with intermediate-high and high risk with the adapted high risk. We verified that the overall survival and disease-free survival were influenced by the clinic stage, LDH value and patients performance status. We recommend the regular use of IPI in the treatment of the patients with DLBCL in our institution.

Abrahão E., Hallack Neto; Juliana, Pereira; Pedro, Dorlhiac-Llacer; Beatriz, Beitler; Dalton A. F., Chamone.

2005-03-01

256

Recent acquisitions in the pathophysiology, diagnosis and treatment of disseminated intravascular coagulation  

OpenAIRE

Abstract Disseminated intravascular coagulation (DIC) is a disorder characterized by both acute generalized, widespread activation of coagulation, which results in thrombotic complications due to the intravascular formation of fibrin, and diffuse hemorrhages, due to the consumption of platelets and coagulation factors. Systemic activation of coagulation may occur in a variety of disorders, including sepsis, severe infections, malignancies, obstetric or vascular disorders, and severe...

Lippi Giuseppe; Franchini Massimo; Manzato Franco

2006-01-01

257

Intravascular papillary endothelial hyperplasia (Masson's tumor) presenting as a triceps mass  

International Nuclear Information System (INIS)

Intravascular papillary endothelial hyperplasia (IPEH) is a nonneoplastic reactive endothelial proliferation most commonly located in the skin or subcutaneous tissues although it has been reported in multiple locations throughout the body. We present a case of intravascular papillary endothelial hyperplasia presenting as a soft tissue mass in the triceps muscle. IPEH is not well-described in the radiologic literature. (orig.)

258

Intravascular Papillary Endothelial Hyperplasia(Masson's Tumor) of the Chest Wall: A Case Report  

International Nuclear Information System (INIS)

Intravascular papillary endothelial hyperplasia is a rare tumor-like lesion caused by hyperplastic proliferation of endothlial cells that is usually an incidental findings within thrombosed dilated blood vessels or vascular tumor. We report the sonographic appearance and pathological correlation of intravascular papillary endothelial hyperplasia that presented as an intramuscular solitary mass in chest wall

259

Síndrome hemofagocítico y linfoma cutáneo de células T / Haemophagocytic syndrome and cutaneous T-cell lymphoma  

Scientific Electronic Library Online (English)

Full Text Available SciELO Spain | Language: Spanish Abstract in spanish El síndrome hemofagocítico (SHF) es un trastorno infrecuente de la inmunorregulación, cuyas manifestaciones clínicas son fiebre, hemofagocitosis, hepatoesplenomegalia, pancitopenia, linfadenopatías, hipertrigliceridemia y coagulopatía. Puede cursar también con afectación pulmonar, fracaso renal agud [...] o o síndrome de secreción inadecuada de ADH (SIADH). Se ha descrito asociado a múltiples enfermedades, destacando los linfomas, sobre todo de células T, infecciones y enfermedades sistémicas, entre otras entidades. Las células hematopoyéticas son fagocitadas por monocitos y macrófagos en los ganglios linfáticos, médula ósea, hígado y bazo, lo que constituye un criterio diagnóstico del SHF. El tratamiento es difícil e incluye medidas de soporte y de las alteraciones de coagulación así como corticoides sistémicos a altas dosis e inmunosupresores, aunque en la mayoría de ocasiones no hay respuesta al tratamiento y la evolución es fatal. Los linfomas T que afectan al tejido celular subcutáneo y simulan una paniculitis han sido clasificados recientemente como linfomas cutáneos de células T (LCCT), siendo infrecuente su presentación como nódulos inflamatorios en extremidades inferiores. Abstract in english Haemophagocytic syndrome is a rare disorder of immune regulation. Clinical features are fever, haemophagocytosis, hepatosplenomegaly, pancitopenia, lymph nodes enlargement, hypertriglyceridaemia and coagulopaty. Systemic findings may also include pulmonary infiltrates, renal failure and an inappropr [...] iate antidiuretic state. It has been described associated to many diseases, like lymphomas, most of them T-cell lymphomas, infections and systemic diseases, among other entities. Haemopoietic cells are actively ingested by monocites and macro-phages in lymph nodes, bone marrow, liver and spleen. This is a diagnostic criteria for haemophagocytic syndrome. The treatment of Haemophagocytic syndrome is difficult and requires intensive supportive therapy, treatment of coagulopaty disorders, high-dose corticosteroids and immunosuppressive treatment, although in most cases there is no response to treatment and the evolution is fatal. The T-cell lymphomas that involve subcutaneous tissue and simulate panniculitis are classified recently as primary cutaneous T-cell lymphomas, and their presentation as inflammatory nodules of the legs are uncommon.

A., Artigues Barceló; M., Ferragut Reus; C., Sánchez; I., Amengual; I., Matanza; M. S., Sanz Parras.

2004-03-01

260

Linfoma primario de bazo. Presentación de un caso / Primary lymphoma of the spleen. Case presentation  

Scientific Electronic Library Online (English)

Full Text Available SciELO Cuba | Language: Spanish Abstract in spanish Fundamento: en el bazo se pueden observar diferentes tipos de tumores, dentro de los cuales están los linfomas primarios del mismo, enfermedad infrecuente, de ahí la importancia de su presentación. Presentación de caso: paciente femenina de 66 años, raza blanca, con antecedentes de hipertensión arte [...] rial, lobectomía derecha del tiroides, que refiere venía presentando desde hacía más de un año dolor abdominal alto izquierdo que se hacía más intenso tras el esfuerzo físico, tos, presentando toma del estado general por lo que se ingresa en el servicio de cirugía. Se toman muestras para biopsia, después de ser intervenido quirúrgicamente de una esplenectomía, dando como resultado un Linfoma no Hodgkin de células grandes CD20 positivo, sin infiltración hepática, ganglionar ni epiplóica. Se realizó esplenectomía y quimioterapia. La paciente ha evolucionado favorablemente. Conclusiones: el linfoma primario de bazo es una entidad infrecuente y su diagnóstico es aún más raro en pacientes por encima de los 60 años, como ocurrió en el caso presentado. A medida que casos como este se divulguen entre los profesionales de la salud permitirán una aproximación diagnóstica más precisa a esta enfermedad poco común. Abstract in english Background: in the spleen you can see different types of tumors; primary lymphomas are an example of them. This is an infrequent disease, hence the importance of its presentation. Case presentation: 66 year old white female patient with history of hypertension, thyroid right lobectomy that refers to [...] have been suffering from high left abdominal pain for a year that became more intense after physical exertion, cough, presenting general malaise by what is admitted to the surgical service. Some samples for biopsy are taken, after being surgically operated of a splenectomy, showing as a result a non-Hodkin lymphoma of big cells resulting cell non-Hodgkin lymphoma CD20 Positive, without hepatic, ganglionic or epiploic infiltration. Splenectomy and chemotherapy were made. The patient has improved favorably. Conclusions: primary lymphoma of the spleen is a rare entity and its diagnosis is still rarer in patients over 60 years, as it happened in the case presented. As cases like these are disseminated among health professionals will allow a more accurate diagnostic approach to this rare disease.

Vicente Joaquín, Más Medina; Mirelquis, Rodríguez Rodríguez; Ania Inés, Cuellar Armas; Ariana Ofelia, Gómez Mutis; Ramsés Manuel, Más Herrera.

2013-12-01

261

Histamine release and endothelial leakage from an intravascular contrast medium  

International Nuclear Information System (INIS)

The endothelial injury produced by meglumine iodamide was studied in the rat aorta. A mixture of blood and contrast medium was more toxic to the endothelium than the pure contrast agent. This difference disappeared after premedication with antihistamine, which did not affect the injury produced by the pure contrast agent. Meglumine iodamide appears to cause a release of histamine from blood but not from the aortic endothelium nor from surrounding tissues in amounts demonstrable by this method. Leucocytes are a source of histamine after intravascular contrast medium administration. (orig.)

262

Intravascular malignant lymphomatosis: report of 2 neurological cases.  

Science.gov (United States)

We report two cases of intravascular malignant lymphomatosis (IML) with a clinical expression limited to the central nervous system. The first patient presented with signs of cerebral, cerebellar and spinal cord involvement. The second had an isolated involvement of the spinal cord. In both cases the diagnosis was made at post-mortem examination; pre-mortem examination of biopsy tissue from peripheral nerve and muscle in the first case, spleen and liver in the second were unhelpful for the diagnosis of lymphoma. We review the published literature on IML, its ante-mortem diagnosis and treatment. PMID:12161904

Vandenheede, Michel; Dioh, Alioune; de Noordhout, A Maertens; Deprez, Manuel; Schoenen, Jean

2002-06-01

263

Integrated intravascular optical coherence tomography ultrasound imaging system  

OpenAIRE

We report on a dual-modality optical coherence tomography (OCT) ultrasound (US) system for intravascular imaging. To the best of our knowledge, we have developed the first integrated OCT-US probe that combines OCT optical components with an US transducer. The OCT optical components mainly consist of a single-mode fiber, a gradient index lens for light-beam focusing, and a right-angled prism for reflecting light into biological tissue. A 40-MHz piezoelectric transducer (PZT-5H) side-viewing US...

Yin, Jiechen; Yang, Hao-chung; Li, Xiang; Zhang, Jun; Zhou, Qifa; Hu, Changhong; Shung, K. Kirk; Chen, Zhongping

2010-01-01

264

Prevention of adverse reactions to intravascular contrast media  

International Nuclear Information System (INIS)

The exact mechanisms of adverse reactions to contrast media are still imperfectly known. However, these reactions may be classified as idiosyncratic. Non-idiosyncratic reactions can be prevented by using new, non-ionic contrast agents. Idiosyncratic reactions can be prevented by specific premedication. Patients with a history of idiosyncratic reaction may benefit from corticosteroids and antihistamines administered prophylactically. Patients who seem to be more likely than others to react to contrast media must be premedicated, the risk of reaction being identified and evaluated by questioning. It has recently been suggested that all patients about to receive an intravascular injection of contrast medium should also be premedicated

265

The design and development of a continuous intravascular monitoring stent  

OpenAIRE

Continuous intravascular monitoring of blood pressure and glucose levels from a minimally invasive device can serve as a diagnostic and early-warning system for cardiac health and as a valuable disease management tool for diabetics. Heart failure (HF) is the number one cause of death among men and women in the developed world, affecting approximately 2 % of the adult population and 6-10 % of people over the age of 65. Catheterization of the right heart is routinely used to obtain the pulmonar...

Beier, Brooke Leigh

2011-01-01

266

Primary Intrarenal Neuroblastoma with Hypertension and Disseminated Intravascular Coagulation  

Science.gov (United States)

The primary intrarenal neuroblastoma (IRNB) is a rare condition. Intrarenal neuroblastoma typically results from direct renal invasion from an adrenal neuroblastoma, but true intrarenal neuroblastoma originates either sequestered adrenal rests during the fetal life or intrarenal sympathetic ganglia. Clinical, radiological, and pathological correlation is very essential for diagnosis and appropriate management of this type of unusual cases. The distinction of this rare tumor from Wilms' tumor is an important challenge since both tumors have major differences in prognostic and therapeutic response. We present a 3-year-old boy of primary intrarenal neuroblastoma with extensive abdominal and mediastinal mass, persistent hypertension, and disseminated intravascular coagulation (DIC). PMID:24416605

Shamsian, Bibi Shahin; Kajizadi, Mohammad; Ghojehvand, Nozar; Azma, Roxana; Rouzrokh, Mohsen; Kazemi Aghdam, Maryam; Mesbah, Seyed Malek; Ghazizadeh, Farid; Arzanian, Mohammad Taghi

2013-01-01

267

Disseminated Intravascular Coagulation with Acutely-Thrombosed Popliteal Aneurysm  

Science.gov (United States)

Disseminated intravascular coagulation (DIC) is an extremely rare complication of acute thrombosis in popliteal aneurysms and makes it difficult to restore the blood flow with thrombolytic therapy or surgical repair. A 75-year-old man with a history of hypertension presented to the emergency department with complaints of right leg pain and bleeding tendency over a 5-day period. The laboratory findings and multislice computed tomography were suggestive of overt DIC caused by acute thrombosis in the right popliteal aneurysm. Successfully treated with medication, he could discharge without surgical or thrombolytic recanalization of the aneurysm. PMID:23555403

2010-01-01

268

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese 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 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. 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 st [...] ructures 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.

2009-08-01

269

Linfoma nasossinusal de células T Natural Killer: relato de caso / Nasosinusal lymphoma of T Natural Killer cells: case report  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese Abstract in portuguese 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. Abstract in english INTRODUCTION: The primary nasal lymphoma is an uncommon extranodal tumor and represents 0.44% of all Extranodal lymphomas in this region. The primary nasal lymphoma derives from the T-lineage in nearly 75% of the cases. OBJECTIVE: To describe a case of nasosinusal lymphoma of T Natural Killer cells, [...] attended in the Clinical Hospital of the Federal University of Goiás. CASE REPORT: 48-year-old female patient with diffuse tumefaction in the left hemiface of firm-elastic consistency and painful upon digital compression. Face sinuses tomography identified a total maxillary veiling to the left and some posterior ethmoidal cells. With the diagnostic hypothesis of a tumor affection, we opted for the surgical removal via a transmaxillary approach and the material was sent for biopsy. The histopathological exam diagnosed a highly necrotic tumor of angiocentric pattern, polymorphic and atypical lymphoid population (T /NK Lymphoma); with the prognosis, the patient was submitted to chemical therapy with total regression of the facial edema. FINAL COMMENTS: The otorhinolaryngologist must be attentive as regards the existence of lymphomas among the nasosinusal diseases, because the early diagnosis improves the survival as it prevents metastases, growth and local destruction.

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

2011-03-01

270

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Venezuela | Language: Spanish 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 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. Intest [...] inal 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.

2006-12-01

271

Tumor desmóide tratado com tamoxifeno: relato de caso  

OpenAIRE

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 ...

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

2006-01-01

272

El Tratado de Lisboa (Un juego de espejos rotos  

Directory of Open Access Journals (Sweden)

Full Text Available El fracaso del Tratado por el que se establece una Constitución para Europa produjo un periodo de incertidumbre y perplejidad del que ha costado mucho sobreponerse. Por un momento, todo parecía resquebrajarse y se tuvo la sensación de que la imagen de unidad en la diversidad, que con tanta dificultad se había forjado, se partía hecha añicoscomo un espejo roto. No obstante, como en un “juego de espejos rotos”, el ideal europeísta se ha ido recomponiendo con un gran esfuerzo, dando lugar a un texto, el Tratado de Lisboa, que encierra una solución de compromiso con el fin de saldar la crisis cuando el futuro de la Unión Europea parecía oscurecerse. Como en los poemas de Alejandra Pizarnik, “cuando el palacio de la noche encierra su hermosura, pulsaremos los espejos hasta que nuestros rostros canten como ídolos” y, así fue como con un esfuerzo milimetrado se ha ido recomponiendo este rompecabezas de cristales con el fin de que en él se refleje, otra vez, la ansiada imagen global. Como se señala enPreámbulo del Tratado de Lisboa, deberemos estar resueltos a salvar una nueva etapa en proceso de integración europea y habrá que recordar “la importancia histórica de que la división del continente europeo haya tocado a su fin y la necesidad de sentar unas bases firmes para la construcción de la futura Europa”.

Juan Manuel de Faramiñán Gilbert

2009-01-01

273

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 symptomatlve within a week. Management is symptomatic and similar to the management of other drug-induced skin reactions. (orig.)

274

Late adverse reactions to intravascular iodinated contrast media  

Energy Technology Data Exchange (ETDEWEB)

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.)

Webb, Judith A.W. [Department of Diagnostic Imaging, St. Bartholomew' s Hospital, London EC1A 7BE (United Kingdom); Stacul, Fulvio [Institute of Radiology, Ospedale di Cattinara, 34149 Trieste (Italy); Thomsen, Henrik S. [Department of Diagnostic Radiology 54E2, Copenhagen University Hospital at Herlev, Herlev Ringvej 75, 2730 Herlev (Denmark); Morcos, Sameh K. [Department of Diagnostic Imaging, Northern General Hospital, Sheffield Teaching Hospitals NHS Trust, Sheffield S5 7AU (United Kingdom)

2003-01-01

275

Scanning electron microscopy of bacteria adherent to intravascular catheters.  

Science.gov (United States)

Scanning electron microscopy was used to assess the morphological features of coagulase-negative staphylococci adherent to polyvinylchloride intravascular catheter specimens. Clinical specimens were obtained by using patient catheters from which coagulase-negative staphylococci (greater than or equal to 15 colonies per catheter) grew on semiquantitative blood agar roll cultures. In vitro specimens were prepared by a previously published technique in which sterile polyvinylchloride catheters were immersed in 10(6) CFU of coagulase-negative staphylococci per ml suspended in phosphate-buffered saline. Unused sterile polyvinylchloride catheters were also examined. Scanning electron microscopy of unused sterile polyvinylchloride catheters demonstrated multiple linear surface irregularities. Scanning electron microscopy of infected patient catheters showed a diffuse amorphous material covering the entire surface and the presence of bacteria which appeared anchored to that surface by several different means. These included a slime layer, "foot" processes, and lodgement in surface irregularities. Scanning electron microscopy of in vitro specimens demonstrated no background surface coating, but it did show attachment of cocci to the surface by the same mechanisms as described for clinical specimens. These observations of similar means of attachment in clinical and in vitro specimens suggest that intrinsic catheter surface properties, bacterial surface features, and perhaps coating with host substances may all play a role in bacterial attachment to intravascular catheters. More sophisticated analysis of these interactions may clarify mechanisms of pathogenesis. PMID:6490834

Franson, T R; Sheth, N K; Rose, H D; Sohnle, P G

1984-09-01

276

Localization of intravascular devices with paramagnetic markers in MR images.  

Science.gov (United States)

Magnetic resonance imaging (MRI) offers potential advantages over conventional X-ray techniques for guiding and evaluating intravascular interventions. The development of methods to safely and robustly localize and track devices under MRI guidance is mandatory to enable automatic scan plane adaptation so as to exploit the three-dimensional imaging capabilities of the MRI scanner. With regard to the issue of radiofrequency-induced heating, passive approaches to catheter tracking are inherently safe. These techniques visualize intravascular devices by exploiting the susceptibility artifacts associated with the devices. To promote conspicuity, the devices are equipped with paramagnetic markers. This paper introduces a method to enable automatic localization of devices by its ability to recognize markers in two-dimensional MR images. The method requires a coarse segmentation of the vasculature of interest, and consists of two steps. First, it performs a series of postprocessing operations including calculation of the winding number image and of the Laplacian image to detect marker candidates in the image. Second, the device is localized by matching the detected pattern of candidates to the known distance template of the device markers. Results of an animal experiment and of a clinical application are demonstrated. Validation in phantom experiments shows that the method is able to localize the device in 95% of the cases. PMID:11686441

van der Weide, R; Bakker, C J; Viergever, M A

2001-10-01

277

Intracoronary Stent Placement without Coumadin or Intravascular Ultrasound.  

Science.gov (United States)

Coronary stenting has been associated with the need for intravascular ultrasound, increased anticoagulation, and increased length of stay. We evaluated the use of ticlopidine and aspirin without ultrasound in 322 consecutive patients from February 1995 through January 1996 who underwent intracoronary stenting with adjunctive high pressure balloon angioplasty [mean peak atmospheres (ATM) = 15.9; mean post-dilating balloon size = 3.4 mm]. Unstable coronary syndrome was the admitting diagnosis in 66% of these patients. Post-stent anticoagulation consisted of overnight heparin, followed by aspirin (325 mg daily) and ticlopidine (250 mg twice daily) for 4 to 6 weeks. Among the 322 patients, 575 stents (Palmaz-Schatz Coronary Stents = 530; Palmaz-Schatz Biliary Stents = 33; Gianturco-Roubin Stents = 12) were implanted in 338 coronary vessels (native arteries = 316; saphenous vein grafts = 22). Twenty-three patients (7%) had multi-vessel stenting. Average length of stay following stenting was 1.6 days (average overall hospital length of stay was 2.3 days), and 71% of patients were discharged the next day. Follow-up of all 322 patients was performed by telephone contact at least 30 days after discharge. During this period 1 (0.3%) acute thrombosis and no subacute thrombosis occurred. In this series of patients, coronary stent implantation using routine high pressure balloon post-dilatation Ñ without intravascular ultrasound Ñ and a combination of aspirin and ticlopidine was performed with no subacute thrombosis and a short length of stay. PMID:10785744

Lawrence; Burtt; Shaftel; Saunders; Korr; Gordon

1996-11-01

278

Thyroid Storm Complicated by Bicytopenia and Disseminated Intravascular Coagulation  

Science.gov (United States)

Patient: Male, 23 Final Diagnosis: Thyroid storm Symptoms: Delirium • diarrhea • fever • hypertension • hyperventilation • tachycardia • weight loss Medication: — Clinical Procedure: — Specialty: Endocrinology and Metabolic Objective: Unusual clinical course Background: The clinical presentation of thyroid storm includes fever, tachycardia, hypertension, and neurological abnormalities. It is a serious condition with a high mortality rate. Furthermore, some other complications affect the clinical course of thyroid storm. Although it is reported that prognosis is poor when thyroid storm is complicated by disseminated intravascular coagulation syndrome (DIC) and leukopenia, reports of such cases are rare. Case Report: A 23-year-old man presented with delirium, high pyrexia, diarrhea, and weight loss of 18 kg over 2 months. According to the criteria of Burch and Wartofsky, he was diagnosed with thyroid storm on the basis of his symptom-complex and laboratory data that confirmed the presence of hyperthyroidism. Investigations also found leukopenia, thrombocytopenia, and disseminated intravascular coagulation, all of which are very rare complications of thyroid storm. We successfully treated him with combined therapy including anti-thyroid medication, despite leukopenia. Conclusions: Early diagnosis and treatment are essential in ensuring a good outcome for patients with this rare combination of medical problems. PMID:25072662

Tokushima, Yoshinori; Sakanishi, Yuta; Nagae, Kou; Tokushima, Midori; Tago, Masaki; Tomonaga, Motosuke; Yoshioka, Tsuneaki; Hyakutake, Masaki; Sugioka, Takashi; Yamashita, Shu-ichi

2014-01-01

279

Primary effusion lymphoma presenting as a cutaneous intravascular lymphoma.  

Science.gov (United States)

Primary effusion lymphoma (PEL) is a rare and aggressive lymphoma that arises in the context of immunosuppression and is characterized by co-infection with Epstein-Barr virus (EBV) and human herpesvirus-8/Kaposi sarcoma-associated herpesvirus (HHV-8/KSHV). It was originally described as arising in body cavity effusions, but presentation as a mass lesion (extracavitary PEL) is now recognized. Here, we describe a case of PEL with an initial presentation as an intravascular lymphoma with associated skin lesions. The patient was a 53-year-old man with human immunodeficiency virus (HIV)/acquired immune deficiency syndrome (AIDS) who presented with fevers, weight loss and skin lesions concerning for Kaposi sarcoma (KS). A skin biopsy revealed no evidence of KS; however, dermal vessels contained large atypical cells that expressed CD31 and plasma cell markers but lacked most B- and T-cell antigens. The atypical cells expressed EBV and HHV-8. The patient subsequently developed a malignant pleural effusion containing the same neoplastic cell population. The findings in this case highlight the potential for unusual intravascular presentations of PEL in the skin as well as the importance of pursuing microscopic diagnosis of skin lesions in immunosuppressed patients. PMID:25355615

Crane, Genevieve M; Xian, Rena R; Burns, Kathleen H; Borowitz, Michael J; Duffield, Amy S; Taube, Janis M

2014-12-01

280

Retinal and choroidal intravascular spectral-domain optical coherence tomography  

DEFF Research Database (Denmark)

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 reflectivityfaded 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.

Willerslev, Anne; Li, Xiao Q

2013-01-01

281

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 SciELO Spain | Language: Spanish 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 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, a [...] nd pathology revealed a primary prostate lymphoma. The patient was referred to the departament of Oncology where he received polychemotherapy and radiotherapy. The patient is currently 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 bon

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

2006-06-01

282

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 SciELO Brazil | Language: Portuguese 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 es [...] tômago 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. 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 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.

2005-04-01

283

Contribución de los Microarrays genómicos al diagnóstico y pronóstico de los linfomas no Hodgkin de línea B.  

OpenAIRE

[ES] En el presente trabajo doctoral se han analizado mediante arrays genómicos o CGHarrays dos tipos de LNH-B. En los LEZM, nuestra hipótesis se ha basado en que un análisis en profundidad de estos linfomas mediante CGH-arrays podría identificar y cartografiar con mayor precisión la región comúnmente delecionada a nivel del cromosoma 7, a la vez que identificar los genes localizados en este cromosoma y que podrían estar implicados en la patogenia de esta enfermedad. En los LDCGB...

Robledo Montero, Cristina

2010-01-01

284

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

Directory of Open Access Journals (Sweden)

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

2006-08-01

285

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: English Abstract in portuguese 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 primári [...] o 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. Abstract in english 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. Ultr [...] asonography 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.

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

2006-08-01

286

Linfoma no Hodgkin en pacientes con SIDA: una reflexión necesaria Non-Hodking lymphoma in AIDS patients: a necessary reflection  

OpenAIRE

El linfoma no Hodgkin constituye una de las 3 afecciones malignas marcadoras de SIDA reconocidas actualmente. Tanto en Cuba, como en el resto del mundo, en la última década se ha observado su incremento en pacientes infectados por el virus de la inmunodeficiencia humana (VIH). Por las razones anteriormente planteadas, se realizó una revisión bibliográfica actualizada del tema en revistas de alto impacto internacional, para describir los principales elementos de esta enfermedad (clasifica...

Eduardo Cofiño González; Juan Francisco Bandera Tirado; Denis Berdasquera Corcho; Francisco Rodríguez Delgado

2007-01-01

287

LINFOMAS CUTÂNEOS DE CÉLULAS T: PAPEL DAS CÉLULAS NK E T CIRCULANTES NA DEFESA ANTI-TUMORAL  

OpenAIRE

O cancro é uma doença complexa caracterizada por um crescimento descontrolado de células próprias do organismo. O sistema imune tem a capacidade de identificar estas células e desenvolver mecanismos de forma a elimina-las. Na tentativa de melhorar o conhecimento sobre como o sistema imune reage perante a presença de células neoplásicas, têm sido realizados numerosos estudos, envolvendo diferentes tipos de tumores. Os linfomas cutâneos de células T (LCCT), grupo de patol...

Aguiar, Ana Bernardete Cerqueira

2009-01-01

288

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 SciELO Brazil | Language: English 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 p [...] ápulas 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. 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 sen [...] sory 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.

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

2013-04-01

289

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

Directory of Open Access Journals (Sweden)

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

2013-04-01

290

Linfoma ileal primário como uma causa de intussuscepção ileocecal recorrente Primary ileal lymphoma as a cause of recurrent ileocecal  

OpenAIRE

INTRODUÇÃO: A intussuscepção ocorre quando um segmento proximal do intestino invagina para dentro do lúmen do segmento distal adjacente. Esta patologia é relativamente comum em crianças, sendo geralmente idiopática, diferentemente do que é evidenciado em adolescentes e adultos, os quais apresentam uma causa orgânica comprovada na maioria dos casos. O linfoma intestinal como etiologia desta patologia é extremamente raro. RELATO DE CASO: Um paciente de 16 anos, masculino, referindo d...

Fábio César Miranda Torricelli; Roberto Iglesias Lopes; André Roncon Dias; Giovanni Scala Marchini; Wanderley Wesley Bonafé; Juliana Magalhães Lopes; Marcelo Rodrigues Borba

2008-01-01

291

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese 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 identi [...] ficaram 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. 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 ident [...] ified 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.

2005-10-01

292

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

Directory of Open Access Journals (Sweden)

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

2005-10-01

293

Platelet demand modulates the type of intravascular protrusion of megakaryocytes in bone marrow.  

Science.gov (United States)

Megakaryocytes (MKs) generate platelets via intravascular protrusions termed proplatelets, which are tandem arrays of platelet-sized swellings with a beaded appearance. However, it remains unclear whether all intravascular protrusions in fact become proplatelets, and whether MKs generate platelets without forming proplatelets. Here, we visualised the sequential phases of intravascular MK protrusions and fragments in living mouse bone marrow (BM), using intravital microscopy, and examined their ultrastructure. The formation of intravascular protrusions was observed to be a highly dynamic process, in which the size and shape of the protrusions changed sequentially prior to the release of platelet progenitors. Among these intravascular protrusions, immature thick protrusions were distinguished from proplatelets by their size and the dynamic morphogenesis seen by time-lapse observation. In ultrastructural analyses, the thick protrusions and their fragments were characterised by a peripheral zone, abundant endoplasmic reticulum and demarcation membrane system, and random microtubule arrays. Proplatelets were predominant among BM sinusoids in the physiological state; however, during an acute thrombocytopenic period, thick protrusions increased markedly in the sinusoids. These results strongly suggested that BM MKs form and release two types of platelet progenitors via distinct intravascular protrusions, and that platelet demand modulates the type of intravascular protrusion that is formed in vivo. PMID:24965909

Kowata, Shugo; Isogai, Sumio; Murai, Kazunori; Ito, Shigeki; Tohyama, Koujiro; Ema, Masatsugu; Hitomi, Jiro; Ishida, Yoji

2014-10-01

294

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  

Scientific Electronic Library Online (English)

Full Text Available SciELO Colombia | Language: Spanish 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 extracután [...] ea 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.

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

2012-06-01

295

Slow clearance gadolinium-based extracellular and intravascular contrast media for three-dimensional MR angiography  

OpenAIRE

The objective of this study was to assess two new slow-clearance contrast media with extracellular and intravascular distribution for magnetic resonance angiography (MRA). Extracellular Gd-DTPA-BC(2)glucA and intravascular Gd(DO3A)(3)-lys(16) were developed within the European Biomed2 MACE Program and compared with two reference compounds, intravascular CMD-A2-Gd-DOTA and extracellular GdDOTA, in 12 rats. Pre- and post-contrast three-dimensional MR (TR/TE = 5 msec/2.2 msec; isotropic voxel si...

Aime, Silvio

2001-01-01

296

[The relationship of metal intravascular stand's surface composition and design to haemocompatibility].  

Science.gov (United States)

Metal biomaterials must be biocompatible; especially, when they contact directly with blood, they must be haemocompatible. Now, stainless steel, tantalum and nickel-titanium shape memory metal alloy are normally made into intravascular stands that are used to stretch blood vascular and resume blood circulation. Intravascular stand's haemocompatibility is very important because it directly influences the occurrence of thrombogenesis in blood system. This paper briefly reviews the metal intravascular stand's surface property, interface reaction with blood, structure design and the research of haemocompatibility. PMID:15762154

Xiao, Mei; Ling, Yiming

2005-02-01

297

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

Directory of Open Access Journals (Sweden)

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

2010-08-01

298

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: Spanish 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 inmuno [...] fenotipo 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. 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 m [...] onoclonal 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.

2010-08-01

299

Crioglobulinemia mixta no relacionada con virus de la hepatitis C, glomerulonefritis mesangiocapilar y linfoma linfoplasmocitario / Mixed cryoglobulinaemia not related to hepatitis C virus, mesangiocapillary glomerulonephritis and lymphoplasmocytic lymphoma  

Scientific Electronic Library Online (English)

Full Text Available SciELO Spain | Language: Spanish Abstract in spanish La afectación renal asociada a linfoma es un fenómeno conocido pero frecuentemente no caracterizado debido a la baja frecuencia con que se realizan biopsias en estos pacientes. Varios patrones histológicos pueden coexistir y pasar desapercibidos sin un estudio histopatológico. La infiltración parenq [...] uimatosa renal por linfoma no es infrecuente, y se ha encontrado hasta en un 34% (post mortem) y 14% (pre mortem), aunque tiene una baja incidencia de manifestaciones clínicas. Existen diferentes patrones de lesión renal asociados a linfoma y destaca la asociación de enfermedad de cambios mínimos con linfoma de Hodgkin. La afectación renal asociada a paraproteínas sintetizadas por un linfoma linfoplasmocitario es una asociación excepcional pese a que existen un 20% de pacientes afectados por dichos linfomas que presentan crioglobulinemia. En la literatura se han publicado casos de enfermedad de cadenas ligeras, amiloidosis, glomerulonefritis inmunotactoide como causas de paraproteinemia, proteinuria e insuficiencia renal en pacientes con linfoma. Presentamos un caso de asociación entre paraproteinemia, glomerulonefritis membrano-proliferativa y la aparición clínicamente evidente de un linfoma linfoplasmocitario en ausencia de infección por virus de la hepatitis C. Esto demuestra la afectación polimorfa que pueden presentar los linfomas en el riñón y el valor de la nefropatología en el diagnóstico y pronóstico de las enfermedades hematológicas que cursan con paraproteinemia. Abstract in english Kidney involvement associated to lymphoma is a known phenomenon but frequently not characterized due to the low frequency with which biopsies are realized in these patients. Several histological patterns can co-exist and happen unnoticed without a biopsy. Parenchyma infiltration in kidney for lympho [...] ma has been found in 34% (post-mortem) and 14% (pre-mortem) and have low incident of clinical manifestations. Other patterns of renal injury are associated to lymphomaand minimal changes disease is especially related with Hodgkin's lymphoma. Renal lesions associated to paraprotein in lymphoplasmocitic lymphoma are an exceptional association, in spite of in 20% of them, appear cryoglobulinemia. There are a few cases reported in the literature with different histological patterns: light-chain disease, amyloidosis, and immuotactoid glomerulopathy related with kidney injury in patients with lymphoma. A 39-year-old male presented an association among paraproteinemia, membrano-proliferative glomerulonephritis no hepatitis C virus related and lymphoplasmocitic lymphoma with renal infiltration. This case emphasized the variety of renal lesions that lymphomas could trigger and the value of the nephropatology in the diagnosis and outcome of the hematologic diseases with paraproteinemia.

M.N., Martina; M., Solé; E., Massó; N., Perez; J.M., Campistol; L.F., Quintana.

300

Capacitação de enfermeiros para uso da ultrassonografia na punção intravascular periférica Capacitación de enfermeros en el uso de la ultrasonografía en la punción intravascular periférica Training of nurses in the use of intravascular ultrasound in peripheral puncture  

Directory of Open Access Journals (Sweden)

Full Text Available Este artigo relata a estratégia de capacitação de enfermeiros para uso da ultrassonografia vascular na obtenção do acesso vascular periférico. O programa foi composto por intervenções educacionais teóricas e práticas desenvolvidas em um período de seis meses. As estratégias foram elaboradas e implementadas por dois enfermeiros especialistas em terapia intravascular, um médico especialista em ultrassonografia vascular e um engenheiro biomédico. Oito enfermeiros participaram da capacitação e, ao final, os conhecimentos, as competências e habilidades adquiridas na identificação de artérias, veias, fluxo sanguíneo e posicionamento de cateteres foram avaliados. A estratégia possibilitou que enfermeiros pediatras adquirissem competências capazes de promover intervenções inovadoras na punção intravascular periférica.Este artículo relata la estrategia de capacitación de enfermeros en el uso de la ultrasonografía vascular en la obtención del acceso vascular periférico. El programa estuvo compuesto por intervenciones educacionales teóricas y prácticas desarrolladas en un período de seis meses. Las estrategias fueron elaboradas e implementadas por dos enfermeros especialistas en terapia intravascular, un médico especialista en ultrasonografía vascular y, un ingeniero biomédico. Ocho enfermeros participaron de la capacitación. Al final, los conocimientos, las competencias y habilidades adquiridas en la identificación de arterias, venas, flujo sanguíneo y posición de catéteres, fueron evaluados. La estrategia posibilitó que los enfermeros pediatras adquiriesen competencias capaces de promover intervenciones innovadoras en la punción intravascular periférica.The objective was to explain, to the nurses training, procedures using vascular ultrasound for obtaining peripheral vascular access. The program consisted of theoretical and practical educational interventions developed over a period of six months. The strategies were developed and implemented by two nurses specialized in intravascular therapy, one doctor specialized in vascular ultrasound and, one biomedical engineer. Eight nurses participated in the training. The knowledge, skills and abilities acquired in the identification of arteries, veins, blood flow and catheter position, were evaluated. The strategy will enable that the pediatrician nurses acquiring skills to promote innovative interventions in peripheral intravascular puncture.

Ariane Ferreira Machado Avelar

2010-06-01

301

Linfoma no Hodgkin de células del manto con infiltración renal y glomerulopatía mesangiocapilar asociada / Mantle cell non-Hodgkin lymphoma with renal infiltration and associated mesangiocapillary glomerulopathy  

Scientific Electronic Library Online (English)

Full Text Available SciELO Cuba | Language: Spanish Abstract in spanish El linfoma de células del manto es una forma infrecuente de linfoma no Hodgkin con alta frecuencia de recaídas y peor pronóstico. Los linfomas pueden inducir daño renal de diferentes modos, entre los que se encuentran la infiltración renal y el desarrollo de glomerulopatías. Se presentó un caso en e [...] l que se asocia el comienzo clínico de un linfoma de células del manto con infiltración parenquimatosa renal y glomerulonefritis mesangiocapilar sin crioglobulinemia. Este constituye el primer caso reportado con esta asociación y pone en evidencia las diferentes formas de afectación renal del linfoma no Hodgkin y el valor del estudio histológico renal, para el diagnóstico y el pronóstico de las enfermedades oncohematológicas con daño renal. Abstract in english Mantle cell lymphoma is an infrequent type of non-Hodgkin lymphoma with high relapse rates and poor prognosis. Lymphomas can induce kidney damage in several ways, including renal infiltration and the development of glomerulopathies. A case associated to the clinical onset of a mantle cell lymphoma w [...] ith lymphocytic infiltration into the renal parenchyma and mesangiocapillary glomerulonephritis without cryoglobulinemia was presented. This is the first case report that describes this association which evidences the different types of renal lesions in no Hodgkin lymphoma and the value of renal histological study for the diagnosis and prognosis of onco-hematologic diseases with kidney damage.

Raymed Antonio, Bacallao Méndez; Laura, López Marín; Agustín, Chong López; Betsy, Llerena Ferrer; Yudit, Chávez Muñoz; Yanisa de la Caridad, Castillo Álvarez.

2013-06-01

302

Split intravascular stents for side-to-end lymphaticovenular anastomosis.  

Science.gov (United States)

Supermicrosurgical lymphaticovenular anastomosis (LVA) is becoming the treatment of choice for compression-refractory lymphedema. Among various types of LVA, side-to-end (S-E) LVA is considered to be the most efficient one, because it can divert bidirectional lymph flows into venous circulation via 1 anastomosis, but is technically difficult. We developed a new technique for safe and easy S-E LVA with modified intravascular stenting (IVaS) method. Different from the original IVaS method, a lymphatic vessel is pierced by an IVaS before creation of a lateral window. The IVaS is cut after window creation and the ends are inserted into the lymphatic vessel and the venule respectively, guiding the course of the needle throughout the S-E anastomosis procedure. This method makes S-E LVA easier without special instruments. PMID:24126341

Yamamoto, Takumi; Yoshimatsu, Hidehiko; Narushima, Mitsunaga; Yamamoto, Nana; Koshima, Isao

2013-11-01

303

Design and implementation of an intravascular brachytherapy installation in cardiology  

International Nuclear Information System (INIS)

Intravascular Brachytherapy (IVB) is a very promising technique for reducing restenosis rates. However, neither the exact absolute dose needed nor the optimal spatial and temporal distribution of dose inside the vessel wall for a successful treatment, nor the physical dosimetry of the various radioactive sources and devices for dose delivery, are well known. In this paper, an overview will be given of the design strategy, the dosimetric and radiation protection-related problems that we have met during the implementation of this technique at San Carlos hospital, adopted or foreseen solutions, and future research fields that we intend to carry out in order to reduce uncertainties and to achieve a deeper knowledge of the parameters that have an influence on the treatment. (author)

304

Robust intravascular optical coherence elastography by line correlations  

Energy Technology Data Exchange (ETDEWEB)

We present a new method for intravascular optical coherence elastography, which is robust against motion artefacts. It employs the correlation between adjacent lines, instead of subsequent frames. Pressure to deform the tissue is applied synchronously with the line scan rate of the optical coherence tomography (OCT) instrument. The viability of the method is demonstrated with a simulation study. We find that the root mean square (rms) error of the displacement estimate is 0.55 {mu}m, and the rms error of the strain is 0.6%. It is shown that high-strain spots in the vessel wall, such as observed at the sites of vulnerable atherosclerotic lesions, can be detected with the technique.

Soest, Gijs van [Department of Biomedical Engineering, Thorax Center, Erasmus MC, PO Box 2040, NL-3000 CA Rotterdam (Netherlands); Mastik, Frits [Department of Biomedical Engineering, Thorax Center, Erasmus MC, PO Box 2040, NL-3000 CA Rotterdam (Netherlands); Jong, Nico de [Department of Biomedical Engineering, Thorax Center, Erasmus MC, PO Box 2040, NL-3000 CA Rotterdam (Netherlands); Steen, Anton F W van der [Department of Biomedical Engineering, Thorax Center, Erasmus MC, PO Box 2040, NL-3000 CA Rotterdam (Netherlands)

2007-05-07

305

Robust intravascular optical coherence elastography by line correlations  

International Nuclear Information System (INIS)

We present a new method for intravascular optical coherence elastography, which is robust against motion artefacts. It employs the correlation between adjacent lines, instead of subsequent frames. Pressure to deform the tissue is applied synchronously with the line scan rate of the optical coherence tomography (OCT) instrument. The viability of the method is demonstrated with a simulation study. We find that the root mean square (rms) error of the displacement estimate is 0.55 ?m, and the rms error of the strain is 0.6%. It is shown that high-strain spots in the vessel wall, such as observed at the sites of vulnerable atherosclerotic lesions, can be detected with the technique

306

Evaluation of Disseminated Intravascular Coagulation in the Craniocerebral Traumas  

Directory of Open Access Journals (Sweden)

Full Text Available Traumatic injury is one of the most important cause of disseminated intravascular coagulation (DIC. It occurs because of blood loss and hemodilution due to fluid resuscitation. The incidence of trauma associated DIC is mainly higher in the craniocerebral traumas. Even though craniocerebral trauma related DIC is well defined, the pathophysiology has been poorly characterized in the literature. Due to the fact that brain tissue is highly significant for procoagulant molecules, craniocerebral traumas are closely related to DIC. In the current study, 30 patients admitted to emergency room have been considered on the first and fifth day of admission to the hospital for the coagulation tests to evaluate DIC in both two groups. [Cukurova Med J 2014; 39(3.000: 488-495

Faruk Altinel

2014-06-01

307

Brachytherapy optimal planning with application to intravascular radiation therapy  

DEFF Research Database (Denmark)

We have been studying brachytherapy planning with the objective of manimizing the maximum deviation of the delivered dose from prescribed dose bounds for treatment volumes. A general framework for optimal treatment planning is presented and the minmax optimization is formulated as a linear program. Dose rate calculations are based on the sosimetry formulation of the American Association of Physicists in Medicine, Task Group 43. We apply the technique to optimal planning for intravascular brachytherapy of intimal hyperplasia using ultrasound data and 192Ir seeds. The planning includes determination of an optimal dwell-time sequence for a train of seeds that deliver ratiation while stepping through the vessel lesion. The results illustrate the advantage of this strategy over the common approach of delivering radiation by positioning a single train of seeds along the whole lesion.

Sadegh, Payman; Mourtada, Firas A.

1999-01-01

308

Basic studies on intravascular low-intensity laser therapy  

Science.gov (United States)

Intravascular low intensity laser therapy (ILILT) was originally put forward in USA in 1982, but popularized in Russia in 1980s and in China in 1990s, respectively. A randomized placebo-controlled study has shown ILILT clinical efficacy in patients suffering from rheumatoid arthritis. As Chinese therapeutic applications of ILILT were the most widely in the world, its basic research, such as intracellular signal transduction research, blood research in vitro, animal blood research in vivo, human blood research in vivo and traditional Chinese medicine research, was also very progressive in China. Its basic studies will be reviewed in terms of the biological information model of photobiomodulation in this paper. ILILT might work in view of its basic studies, but the further randomized placebo-controlled trial and the further safety research should be done.

Liu, Timon Cheng-Yi; Duan, Rui; Wang, Shuang-Xi; Liu, Jiang; Cui, Li-Ping; Jin, Hua; Liu, Song-Hao

2006-09-01

309

El Tratado De Dilectione Dei de Balduino de Ford  

OpenAIRE

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 latina, insiste en que...

Carlos Hallet

2004-01-01

310

Intravascular contrast media. Ionic versus nonionic: current status.  

Science.gov (United States)

The development of LOCM is one of the most important medical discoveries made at the end of this century. In developing nonionic compounds, Almén showed that it was possible to decrease the osmolality by a factor of 2 and also thereby reduce the chemotoxicity by as much as a factor of 20. Serious adverse side effects after the intravascular administration of contrast material are caused by a combination of osmotoxic and chemotoxic properties of an individual contrast media molecule as well as the ionic composition of the agent when in solution. Worldwide clinical experience with the use of LOCM, ionic and nonionic, consistently has shown the new material to be safer and more comfortable in clinical practice. Some form of limited use of LOCM is now part of virtually every radiologist's daily practice, and the focus is turning to the low-risk-no-risk group. There are gray areas between risk categories, with some evidence even suggesting that the 20- to 40-year-old age group may be at risk to the same or even a greater degree than other commonly accepted risk groups such as the elderly. The future promises even better and safer but, in all likelihood, expensive, contrast agents for intravascular use. The ultimate decision on choice of contrast or the fate of LOCM rests with public policy makers, organized medicine, and the individual physician and patient. Based on penetration of the marketplace (nearly 50%) in terms of LOCM sales in 1990, there is a growing awareness within our specialty as well as the public sector of the improvements offered by LOCM. It is unlikely that a major conversion back to the universal use of HOCM will ever occur. As long as cost remains the major focus of the debate over the choice, however, physicians need to be informed advocates, familiar with the science, yet sensitive to the economic implications of the decisions they make to best serve the interests of their patients. PMID:2023999

McClennan, B L; Stolberg, H O

1991-05-01

311

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Cuba | Language: Spanish Abstract in spanish 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 n [...] ecropsias 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. Abstract in english 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.

1999-06-01

312

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

1999-06-01

313

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

2008-02-01

314

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese 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 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 primar [...] y 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.

2008-02-01

315

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

2008-03-01

316

Actividad laboral en una cohorte de pacientes con linfoma non Hodgkin  

Scientific Electronic Library Online (English)

Full Text Available SciELO Spain | Language: Spanish 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 coho [...] rte 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. 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 possib [...] le 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.

2008-03-01

317

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Venezuela | Language: Spanish Abstract in spanish 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 e [...] ndocarditis 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. Abstract in english 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 ba [...] cterial 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.

2007-05-01

318

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

International Nuclear Information System (INIS)

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)

319

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

320

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

2001-01-01

321

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

OpenAIRE

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

322

Severe disseminated intravascular coagulation associated with massive ventricular mural thrombus following acute myocardial infarction.  

OpenAIRE

We describe three patients who developed severe disseminated intravascular coagulation associated with large ventricular mural thrombi shortly after presenting with acute myocardial infarction. To our knowledge this association has not been reported before.

Solomon, S. A.; Cotton, D. W.; Preston, F. E.; Ramsay, L. E.

1988-01-01

323

COAGULACIÓN INTRAVASCULAR DISEMINADA SECUNDARIA A ANEURISMA AÓRTICO DIAGNOSTICADA TRAS EXTRACCIÓN DENTAL  

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Full Text Available RESUMEN:Las manifestaciones de la coagulación intravascular diseminada (CID están determinadas por la causa subyacente; sin embargo, en los casos de CID compensada el diagnóstico se basa en las pruebas de laboratorio.Presentamos el caso de un varón de 81 años al que se diagnostico de una coagulación intravascular diseminada secundaria a un aneurisma gigante de ambas ilíacas tras una extracción dentaria. SUMMARYThe clinical presentation of disseminated intravascular coagulopathy (DIC is determined by the underlying disease. However, in patients with chronic DIC the diagnostic is based in laboratory tests.We report a case of an 81-year-old male who was diagnosed disseminated intravascular coagulopathy secondary to gigant iliac aneurysm after a dental extraction

Cuevas-Ruiz MV

2006-04-01

324

Intravascular ultrasound to guide the management of intracoronary thrombus: a Case Report  

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Full Text Available Abstract Percutaneous coronary intervention can be associated with distal embolization of thrombotic material causing myocardial necrosis and infarction. We discuss the role of intravascular imaging to guide the use of a distal protection device by describing the outcome of a young woman presenting with non-ST elevation myocardial infarction. Coronary angiography demonstrated an isolated minor stenosis in the proximal left anterior descending coronary artery with slight haziness beyond the lesion. Intravascular ultrasound confirmed an extensive thrombus overlying a bulky atherosclerotic plaque. A distal filter wire was therefore successfully used to reduce the risk of distal embolization. The use of intravascular ultrasound in patients presenting with acute coronary syndrome may reveal large thrombi that are difficult to image using conventional angiographic techniques. Intravascular ultrasound can therefore be used as a tool to select lesions requiring distal protection.

Ashar Vaishali

2004-10-01

325

Intravascular ultrasound to guide the management of intracoronary thrombus: a case report.  

Science.gov (United States)

Percutaneous coronary intervention can be associated with distal embolization of thrombotic material causing myocardial necrosis and infarction. We discuss the role of intravascular imaging to guide the use of a distal protection device by describing the outcome of a young woman presenting with non-ST elevation myocardial infarction. Coronary angiography demonstrated an isolated minor stenosis in the proximal left anterior descending coronary artery with slight haziness beyond the lesion. Intravascular ultrasound confirmed an extensive thrombus overlying a bulky atherosclerotic plaque. A distal filter wire was therefore successfully used to reduce the risk of distal embolization. The use of intravascular ultrasound in patients presenting with acute coronary syndrome may reveal large thrombi that are difficult to image using conventional angiographic techniques. Intravascular ultrasound can therefore be used as a tool to select lesions requiring distal protection. PMID:15461814

Porto, Italo; Mitchell, Andrew R J; Ashar, Vaishali; Banning, Adrian P

2004-01-01

326

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

2008-03-01

327

Alterações histológicas e imunoistoquímicas em pâncreas de ratos normais e diabéticos tratados com Syzygium cumini  

OpenAIRE

Avaliou-se o efeito da administração oral do extrato da casca de Syzygium cumini sobre o pâncreas de ratos normais e diabéticos. Os animais foram divididos em grupo controle (C), controle tratado (CT), diabético controle (DC) e diabético tratado (DT). Os tratados receberam dose diária de 1g kg-1 de peso vivo, durante 30 dias. Os animais foram submetidos à eutanásia e o pâncreas retirado para análise histológica e imunoistoquímica para insulina. Neste estudo observou-se uma diminu...

Schossler Deila Rosely Carneiro; Mazzanti Cinthia Melazzo; Luz Sônia Cristina Almeida da; Filappi Andreane; Prestes Danívia; Silveira Aron Ferreira da; Cecim Marcelo

2004-01-01

328

Conflicto entre tratados: ¿Tempestad o calma en el Derecho del Mar?  

OpenAIRE

La existencia de conflictos entre tratados constituye un viejo tópico de la teoría general del Derecho al que no escapa el ordenamiento jurídico internacional, donde, lamentablemente, resulta cada vez más frecuente la existencia de tratados internacionales sucesivos y concurrentes que regulan al mismo tiempo una misma materia, pudiendo contener disposiciones contradictorias entre sí. Los criterios que deben regir la aplicación de estos tratados en conflicto aparecen recogidos en el art?...

Lo?pez Marti?n, Ana Gemma

2006-01-01

329

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

2004-06-01

330

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

2011-04-01

331

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

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Full Text Available SciELO Brazil | Language: Portuguese Abstract in portuguese 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, po [...] r 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. Abstract in english 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 pr [...] esent 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.

2004-06-01

332

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Spain | Language: Spanish 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 (REA [...] L), 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. 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 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.

2005-04-01

333

Coagulación intravascular diseminada fulminante en una paciente con leucemia promielocítica aguda  

OpenAIRE

Se comunicó el caso de una paciente con diagnóstico de coagulación intravascular diseminada, de tipo fulminante, cuya causa resultó ser una leucemia promielocítica aguda, de la variedad hipergranular. Se observó, clínicamente, un comportamiento agresivo de la enfermedad que ocasionó la muerte del paciente, en 72 h, por hemorragias viscerales masivas.The case of a patient with diagnosis of fulminant disseminated intravascular coagulation caused by a hypergranular acute promyelocyti...

Ivette Martínez López; Jorge Jiménez Armada; Martha Ballmajó Real; Reynaldo William Sánchez García; Manuel Solano Rolando

2002-01-01

334

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.

Sara Pourshahidi

2008-04-01

335

Release of Plasmid DNA from Intravascular Stents Coated with Ultrathin Multilayered Polyelectrolyte Films  

OpenAIRE

Materials that permit control over the release of DNA from the surfaces of topologically complex implantable devices, such as intravascular stents, could contribute to the development of new approaches to the localized delivery of DNA. We report the fabrication of ultrathin, multilayered polyelectrolyte films that permit both the immobilization and controlled release of plasmid DNA from the surfaces of stainless steel intravascular stents. Our approach makes use of an aqueous-based, layer-by-...

Jewell, Christopher M.; Zhang, Jingtao; Fredin, Nathaniel J.; Wolff, Matthew R.; Hacker, Timothy A.; Lynn, David M.

2006-01-01

336

Advanced Gastric Cancer Associated with Disseminated Intravascular Coagulation Successfully Treated with 5-fluorouracil and Oxaliplatin  

OpenAIRE

Gastric cancer patients with acute disseminated intravascular coagulation experiences a rare but severe complication resulting in a dismal prognosis. We report a case of advanced gastric cancer complicated with disseminated intravascular coagulation with intractable tumor bleeding which was successfully treated with chemotherapy consisting of 5-fluorouracil and oxaliplatin. The patient was a 63-year-old man who complained of abdominal pain, melena, and dyspnea on 24 November 2010. We diagnose...

Lee, Dong Seok; Yoo, Seung Jin; Oh, Ho Suk; Kim, Eun Jung; Oh, Kwang Hoon; Lee, Sang Jin; Park, Jong Kyu; Ahn, Yong Chel; Eom, Dae-woon; Ahn, Heui June

2013-01-01

337

Intravascular Hemolysis Secondary to Aorto-atrial Fistula Presenting as Red Urine  

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Intravascular hemolysis is a rare but potentially life threatening cause of red urine characterized by brisk hemolysis and release of large amounts of hemoglobin into the urine. We present an unusual case of red urine in a 20-year-old male who was subsequently diagnosed with intravascular hemolysis due to an aorto-atrial fistula. Fistula formation was likely secondary to a recently implanted atrial septal occluder, which is a reported but exceedingly rare complication of the device. We discus...

Sey, Michael S. L.; Manlucu, Jaimie; Myers, Kathryn A.

2010-01-01

338

Intravascular Pillars and Pruning in the Extraembryonic Vessels of Chick Embryos  

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To investigate the local mechanical forces associated with intravascular pillars and vessel pruning, we studied the conducting vessels in the extraembryonic circulation of the chick embryo. During the development days 12–16, intravascular pillars and blood flow parameters were identified using fluorescent vascular tracers and digital time-series video reconstructions. The geometry of selected vessels was confirmed by corrosion casting and scanning electron microscopy. Computational simulati...

Lee, Grace S.; Filipovic, Nenad; Lin, Miao; Gibney, Barry C.; Simpson, Dinee C.; Konerding, Moritz A.; Tsuda, Akira; Mentzer, Steven J.

2011-01-01

339

Intravascular Thrombosis in Central Nervous System Malignancies: A Potential Role in Astrocytoma Progression to Glioblastoma  

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The presence of necrosis within a diffuse glioma is a powerful predictor of poor prognosis, yet little is known of its origins. Intravascular thrombosis is a frequent finding in glioblastoma [GBM; World Health Organization (WHO) grade IV] specimens and could potentially be involved in astrocytoma progression to GBM or represent a surrogate marker of GBM histology. We investigated whether intravascular thrombosis was more frequent or prominent in GBM than other central nervous system (CNS) mal...

Tehrani, Mahtab; Friedman, Theodore M.; Olson, Jeffrey J.; Brat, Daniel J.

2007-01-01

340

Intercambio de Comercio Agroalimentario entre Canadá y México bajo el Tratado de Libre Comercio  

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Full Text Available Este ensayo enlista y describe el intercambio de productos de comercio agro-alimentario entre Canadá y México bajo el Tratado de Libre Comercio de Norte América. (NAFTA: iniciales en inglés. Aquí se presenta una descripción en detalle de las barreras existentes de la estructura de dicho tratado ( tanto previas como posteriores . Se ha encontrado que bajo este nuevo tratado, el intercambio en la mayoría de los sectores del comercio agro-alimentario ha crecido significativamente. Este documento nos dice que el TLC ( Tratado de Libre Comercio, equivalente a NAFTA alcanzó sus objetivos planteados para reducir barreras de intercambio entre estos dos socios comerciales.

Jared Carlberg

2004-01-01

341

Radionuclide assessment of peripheral intravascular capacity: a technique to measure intravascular volume changes in the capacitance circulation in man  

International Nuclear Information System (INIS)

Changes in the capacitance vasculature influence venous return and cardiac performance, so an understanding of the effects of pathophysiologic states on the human capacitance vasculature is necessary to understand integrated cardiovascular function in man. Techniques available to assess the capacitance vasculature in man, however, have limitations. We performed radionuclide imaging of the calf or forearm in 51 patients whose erythrocytes had been labeled in vivo with technetium-99m, basing our approach on the principle that counts from the radiolabeled intravascular space are proportional to blood volume. Two-minute or 15-second count acquisitions were obtained from the calf in 42 patients. Counts obtained at rest demonstrated little variation. With veno-occlusion at 15 and 30 mm Hg, counts increased 8 +- 1% (+- SEM) (p < 0.001) and 28 +- 2% (p < 0.001), respectively. After 0.4 mg of sublingual nitroglycerin, counts increased 9 +- 1% (p < 0.001). With leg elevation, counts decreased 34 +- 4% (p < 0.001). Response patterns were similar with 2-minute and 15-second acquisitions. In nine patients who underwent forearm imaging (2-minute acquisitions), counts increased 14 + 2% (p < 0.001) and 26 +- 4% (p < 0.001) at 15- and 30-mm Hg veno-occlusion and 15 +- 3% (p < 0.001) after nitroglycerin. Volume displacements, recorded simultaneously with a fluid-filled plethysmograph about the contralateral forearm, correlated linearly in all nine patients. Thus, gamma camera imaging oine patients. Thus, gamma camera imaging of the radiolabeled peripheral intravascular space provides a quantitative and reliable assessment of peripheral vascular capacity in man. The technique could be used in conjunction with gated cardiac imaging in order to assess the interactions of peripheral vascular capacity and ventricular performance

342

Linfoma T subcutâneo do tipo paniculite: relato de um caso acometendo paciente pediátrico / Subcutaneous panniculitic T cell lymphoma: a case report affecting a child  

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Full Text Available SciELO Brazil | Language: Portuguese Abstract in portuguese Os autores relatam um caso de linfoma T subcutâneo do tipo paniculite em uma paciente feminina de 3 anos, apresentando havia um mês múltiplos nódulos subcutâneos, indolores, disseminados no abdome, região peitoral e cervical. Ao exame histopatológico, evidenciou-se um linfoma T infiltrando tecido ad [...] iposo subcutâneo. Os linfomas T subcutâneos representam uma entidade clinicopatológica distinta, sendo raro o acometimento pediátrico. Abstract in english We report a case of lypotrophic lymphoma affecting a 3-year-old child with 1-month history of nontender subcutaneous nodules disseminated throughout the abdomen, chest and cervical region. Histological examination showed a T-cell lymphoma affecting the subcutaneous tissue. Subcutaneous panniculitis- [...] like T-cell lymphoma is an unusual cutaneous T-cell lymphoma that rarely affects pediatric patients.

Lúcia de, Noronha; Fabiola, Medeiros; Luciano Monte Serrat, Prevedello; Vanessa Dello Monaco, Martins; Flora, Watanabe; José, Fillus Neto.

343

Linfoma T subcutâneo do tipo paniculite: relato de um caso acometendo paciente pediátrico Subcutaneous panniculitic T cell lymphoma: a case report affecting a child  

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Full Text Available Os autores relatam um caso de linfoma T subcutâneo do tipo paniculite em uma paciente feminina de 3 anos, apresentando havia um mês múltiplos nódulos subcutâneos, indolores, disseminados no abdome, região peitoral e cervical. Ao exame histopatológico, evidenciou-se um linfoma T infiltrando tecido adiposo subcutâneo. Os linfomas T subcutâneos representam uma entidade clinicopatológica distinta, sendo raro o acometimento pediátrico.We report a case of lypotrophic lymphoma affecting a 3-year-old child with 1-month history of nontender subcutaneous nodules disseminated throughout the abdomen, chest and cervical region. Histological examination showed a T-cell lymphoma affecting the subcutaneous tissue. Subcutaneous panniculitis-like T-cell lymphoma is an unusual cutaneous T-cell lymphoma that rarely affects pediatric patients.

Lúcia de Noronha

2001-01-01

344

Micose fungoide: relato de caso tratado com radioterapia Mycosis fungoides: case report treated with radiotherapy  

OpenAIRE

Micose fungoide é um tipo de linfoma não Hodgkin de células T raro que acomete primariamente a pele. Caracteriza-se pela presença de placas eritematosas que evoluem para lesões ulceradas, tumores em toda a pele ou ainda infiltração de medula óssea em estágios avançados. Como opção de tratamento para os casos iniciais, tem-se quimioterapia e corticoterapia tópica, fototerapia e radioterapia. Este estudo relata o caso de um doente com múltiplas lesões tumorais na pele já biopsia...

Gustavo Nader Marta; Carolina Bueno de Gouvêa; Stéfani Bertolucci Estevam Ferreira; Samir Abdallah Hanna; Cecília Maria Kalil Haddad; João Luis Fernandes da Silva

2011-01-01

345

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

2009-08-01

346

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese 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. Adenomega [...] lia, 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. 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 co [...] nstitutional 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.

2009-08-01

347

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese 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 instr [...] umental técnico atualmente disponível para o estudo da biologia molecular. Talvez o refinamento das técnicas de análise da expressão de multiplos genes, incluindo 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 t [...] o 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 better understanding of the new paradigms of cell differentiation relativity, if SLL and CLL are different diseases.

Lucia M. R., Silla.

2005-12-01

348

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

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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

2003-03-01

349

Linfoma de Hodgkin y no Hodgkin durante la gestación: a propósito de dos casos  

Scientific Electronic Library Online (English)

Full Text Available SciELO Chile | Language: Spanish Abstract in spanish Las neoplasias hematológicas en el embarazo conllevan un gran riesgo para la madre y el feto. El linfoma, Hodgkin (LH) y no Hodgkin (LNH), es la cuarta causa más frecuente de cáncer diagnosticado en el embarazo. El tipo más frecuente es el LH, mientras que la incidencia de LNH es muy baja. Presentam [...] os dos casos de gestantes de 29 y 25 años, diagnosticadas en el segundo trimestre de la gestación de LNH mediastínico de células B y LH tipo esclerosis nodular respectivamente. Ambas fueron tratadas con quimioterapia desde el diagnóstico hasta dos semanas antes del parto, con buen resultado perinatal. Abstract in english Haematological cancer in pregnancy poses a substantial risk to both, mother and fetus. Lymphoma, including Hodgkin's lymphoma (HL) and Non-Hodgkin's lymphoma (NHL), is the fourth most frequent malignancy diagnosed during pregnancy. The most common type of lymphoma in this setting is HL, and the inci [...] dence of pregnancy associated NHL is very low. In this report we describe two cases of a 29-year-old woman and a 25-year-old woman both in the second trimester of pregnancy, diagnosed with mediastinal B-cell NHL and nodular-sclerosis HL respectively. They were managed with chemotherapy since the diagnosis as far as two weeks before the delivery, both with a successful fetal outcome.

Beatriz, Rojas P; Matilde, Perella A; Aldonza, Ania L; Teresa, Arribas M; Lorena, Guardia D; Isabel, González B; Belén, Carazo H.

2014-10-01

350

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

Directory of Open Access Journals (Sweden)

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

2010-01-01

351

Linfoma no Hodgkin primario de mama, revisión de la literatura y presentación de un caso Primary non-Hodgkin breast lymphoma, literature review and a case a presentation  

OpenAIRE

El linfoma no Hodgkin primario de la mama es una entidad poco frecuente en pediatría y representa el 0,4 al 0,5 % de todos los tumores mamarios malignos. Debido a que carecen de características propias, tanto clínicas, citológicas como ecográficas, resulta muy difícil establecer el diagnóstico preoperatorio. Se presenta el caso de un linfoma no Hodgkin primario de la mama en una paciente de 3 años que llegó en estadio avanzado de la enfermedad, y se subraya la importancia del tratami...

Caridad Verdecia Cañizares; Andrés Português Díaz; Magda Alonso Pirez; Osiris Cubero Meléndez

2011-01-01

352

Intravascular ultrasound assessed incomplete stent apposition and stent fracture in stent thrombosis after bare metal versus drug-eluting stent treatment the Nordic Intravascular Ultrasound Study (NIVUS)  

DEFF Research Database (Denmark)

This prospective multicenter registry used intravascular ultrasound (IVUS) in patients with definite stent thrombosis (ST) to compare rates of incomplete stent apposition (ISA), stent fracture and stent expansion in patients treated with drug-eluting (DES) versus bare metal (BMS) stents. ST is a rare, but potential life threatening event after coronary stent implantation. The etiology seems to be multifactorial.

Kosonen, Petteri; Vikman, Saila

2013-01-01

353

Monolithic CMUT on CMOS Integration for Intravascular Ultrasound Applications  

Science.gov (United States)

One of the most important promises of capacitive micromachined ultrasonic transducer (CMUT) technology is integration with electronics. This approach is required to minimize the parasitic capacitances in the receive mode, especially in catheter based volumetric imaging arrays where the elements need to be small. Furthermore, optimization of the available silicon area and minimized number of connections occurs when the CMUTs are fabricated directly above the associated electronics. Here, we describe successful fabrication and performance evaluation of CMUT arrays for intravascular imaging on custom designed CMOS receiver electronics from a commercial IC foundry. The CMUT on CMOS process starts with surface isolation and mechanical planarization of the CMOS electronics to reduce topography. The rest of the CMUT fabrication is achieved by modifying a low temperature micromachining process through the addition of a single mask and developing a dry etching step to produce sloped sidewalls for simple and reliable CMUT to CMOS interconnection. This CMUT to CMOS interconnect method reduced the parasitic capacitance by a factor of 200 when compared with a standard wire bonding method. Characterization experiments indicate that the CMUT on CMOS elements are uniform in frequency response and are similar to CMUTs simultaneously fabricated on standard silicon wafers without electronics integration. Experiments on a 1.6 mm diameter dual-ring CMUT array with a 15 MHz center frequency show that both the CMUTs and the integrated CMOS electronics are fully functional. The SNR measurements indicate that the performance is adequate for imaging CTOs located 1 cm away from the CMUT array. PMID:23443701

Zahorian, Jaime; Hochman, Michael; Xu, Toby; Satir, Sarp; Gurun, Gokce; Karaman, Mustafa; Degertekin, F. Levent

2012-01-01

354

Disseminated intravascular coagulation complicating HELLP syndrome: perioperative management  

Science.gov (United States)

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 continuous epistaxis and elective tracheal intubation was carried out. During emergency caesarean section the patient was managed with blood products, antihypertensive drugs and general anaesthesia together with invasive monitoring. She required postoperative ventilatory support. HELLP syndrome may progress to DIC in 15–38% of patients. The prothrombin time, activated partial thromboplastin time and serum fibrinogen levels are normal in HELLP syndrome but are prolonged in DIC. Evaluation of more sensitive markers of DIC, such as antithrombin III, ?-2 antiplasmin, plasminogens, fibrin monomer and D-dimers, differentiates DIC from HELLP syndrome. Aggressive treatment is indicated and delivery should be expedited, by caesarean section if necessary although vaginal delivery is not contraindicated, along with control of blood pressure and coagulation abnormality. We conclude that patients with DIC complicating HELLP syndrome and preeclampsia require great vigilance and multimodal management in the perioperative period for uneventful outcome. PMID:21686497

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

2009-01-01

355

Implications of Donor Disseminated Intravascular Coagulation on Kidney Allograft Recipients  

Science.gov (United States)

Summary Background and objectives Disseminated intravascular coagulation (DIC) is common in deceased kidney donors and is considered a relative contraindication to donation. The significance of donor DIC on recipient kidney function is poorly understood. Additionally, the significance of thrombocytopenia in recipients of kidneys from DIC-positive donors is understudied. Design, setting, participants, & measurements In a retrospective cohort of 162 kidney transplants, the presence of DIC in donors, the occurrence of thrombocytopenia in recipients, and risk factors for delayed or slow graft function (DGF/SGF) were assessed. The effects of DIC donor status on DGF/SGF in the study sample as a whole, and of thrombocytopenia on DGF/SGF in recipients of DIC-positive kidneys specifically, were examined using multiple logistic regression. Results DIC donor status was not associated with occurrence of DGF/SGF, but thrombocytopenia was significantly associated with DIC-positive donor status (P = 0.008). Thrombocytopenia was independently associated with DGF/SGF only in the recipients of DIC-positive kidneys (P = 0.005). Patient and graft survival at 1 year were not affected by donor DIC status or by thrombocytopenia status. Conclusions Donor DIC was not associated with short-term suboptimal graft function, defined as DGF/SGF, nor with long-term patient or graft survival. However, thrombocytopenia appears to portend DGF/SGF in recipients of DIC-positive kidneys and may be a clinical sign on which the basis of therapeutic decisions could be undertaken. PMID:21372214

Shafique, Shahzad; McCullagh, Johanna; Diederich, Dennis A.; Winklhofer, Franz T.; Wetmore, James B.

2011-01-01

356

Trombocytopenia: one of the markers of disseminated intravascular coagulation.  

Science.gov (United States)

Disseminated intravascular coagulation (DIC) is a complication of a variety of severe underlying diseases and a contributing factor in multi-organ failure and death. DIC is diagnosed on the basis of clinical findings (organ failure, bleeding) and laboratory abnormalities. The laboratory data include (repeated) measurements of platelet count and global clotting tests, to which more specific and sensitive tests for activated coagulation are added. The focus of this paper is on thrombocytopenia (platelet count < 100 x 103/microl) as a marker in DIC. First, in patients with suspected DIC it is imperative to consider alternative causes of thrombocytopenia,such as related to heparin use (heparin induced thrombocytopenia II) or thrombocytopenic purpura. Second, the observation of thrombocytopenia in relation to DIC should be interpreted as a marker of advanced or overt DIC and not as an early indicator. According to recommended guidelines measurements of platelet counts should always be coupled to a panel of coagulation markers and not be used as single marker of DIC (or other syndromes). In general, thrombocytopenia should not trigger platelet transfusions except in patients with severe bleeding complications. PMID:15692253

Ten Cate, Hugo

357

Sensor materials for an intravascular fiber optic nitric oxide sensor  

Science.gov (United States)

Nitric oxide (NO) is an important regulatory molecule in physiological processes including neurotransmission and the control of blood pressure. It is produced in excess during septic shock, the profound hypotensive state which accompanies severe infections. In-vivo measurement of NO would enhance the understanding of its varied biological roles. Our goal is the development of an intravascular fiber-optic sensor for the continuous measurement of NO. This study evaluated nitric oxide sensitive compounds as potential sensing materials in the presence and absence of oxygen. Using absorption spectroscopy we studied both the Fe II and Fe III forms of three biologically active hemes known to rapidly react with NO: hemoglobin, myoglobin, and cytochrome-c. The Fe II forms of hemoglobin and myoglobin and the Fe III form of cytochrome-c were found to have the highest sensitivity to NO. Cytochrome c (Fe III) is selective for NO even at high oxygen levels, while myoglobin is selective only under normal oxygen levels. NO concentrations as low as 1 (mu) M can be detected with our fiber-optic spectrometer using cytochrome c, and as low as 300 nM using myoglobin. Either of these materials would be adequate to monitor the increase in nitric oxide production during the onset of septic shock.

Soller, Babs R.; Parikh, Bhairavi R.; Stahl, Russell F.

1996-04-01

358

Capacitação de enfermeiros para uso da ultrassonografia na punção intravascular periférica / Training of nurses in the use of intravascular ultrasound in peripheral puncture / Capacitación de enfermeros en el uso de la ultrasonografía en la punción intravascular periférica  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese Abstract in portuguese Este artigo relata a estratégia de capacitação de enfermeiros para uso da ultrassonografia vascular na obtenção do acesso vascular periférico. O programa foi composto por intervenções educacionais teóricas e práticas desenvolvidas em um período de seis meses. As estratégias foram elaboradas e implem [...] entadas por dois enfermeiros especialistas em terapia intravascular, um médico especialista em ultrassonografia vascular e um engenheiro biomédico. Oito enfermeiros participaram da capacitação e, ao final, os conhecimentos, as competências e habilidades adquiridas na identificação de artérias, veias, fluxo sanguíneo e posicionamento de cateteres foram avaliados. A estratégia possibilitou que enfermeiros pediatras adquirissem competências capazes de promover intervenções inovadoras na punção intravascular periférica. Abstract in spanish Este artículo relata la estrategia de capacitación de enfermeros en el uso de la ultrasonografía vascular en la obtención del acceso vascular periférico. El programa estuvo compuesto por intervenciones educacionales teóricas y prácticas desarrolladas en un período de seis meses. Las estrategias fuer [...] on elaboradas e implementadas por dos enfermeros especialistas en terapia intravascular, un médico especialista en ultrasonografía vascular y, un ingeniero biomédico. Ocho enfermeros participaron de la capacitación. Al final, los conocimientos, las competencias y habilidades adquiridas en la identificación de arterias, venas, flujo sanguíneo y posición de catéteres, fueron evaluados. La estrategia posibilitó que los enfermeros pediatras adquiriesen competencias capaces de promover intervenciones innovadoras en la punción intravascular periférica. Abstract in english The objective was to explain, to the nurses training, procedures using vascular ultrasound for obtaining peripheral vascular access. The program consisted of theoretical and practical educational interventions developed over a period of six months. The strategies were developed and implemented by tw [...] o nurses specialized in intravascular therapy, one doctor specialized in vascular ultrasound and, one biomedical engineer. Eight nurses participated in the training. The knowledge, skills and abilities acquired in the identification of arteries, veins, blood flow and catheter position, were evaluated. The strategy will enable that the pediatrician nurses acquiring skills to promote innovative interventions in peripheral intravascular puncture.

Ariane Ferreira Machado, Avelar; Maria Angelica Sorgini, Peterlini; Priscilla Sete de Carvalho, Onofre; Myriam Aparecida Mandetta, Pettengill; Mavilde da Luz Gonçalves, Pedreira.

2010-06-01

359

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Colombia | Language: Spanish 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 metropolita [...] na 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): 39-47 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 poblationa [...] l 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.

2011-04-01

360

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Venezuela | Language: Spanish 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 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. 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 hu [...] man 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.

2010-06-01

361

Advanced Gastric Cancer Associated with Disseminated Intravascular Coagulation Successfully Treated with 5-fluorouracil and Oxaliplatin  

Science.gov (United States)

Gastric cancer patients with acute disseminated intravascular coagulation experiences a rare but severe complication resulting in a dismal prognosis. We report a case of advanced gastric cancer complicated with disseminated intravascular coagulation with intractable tumor bleeding which was successfully treated with chemotherapy consisting of 5-fluorouracil and oxaliplatin. The patient was a 63-year-old man who complained of abdominal pain, melena, and dyspnea on 24 November 2010. We diagnosed stage IV gastric cancer complicated by disseminated intravascular coagulation. Gastric tumor bleeding was not controlled after procedures were repeated three times using gastrofiberscopy. With the patient's consent, we selected the 5-fluorouracil and oxaliplatin combination chemotherapy for treatment. After one cycle of 5-fluorouracil and oxaliplatin therapy, symptoms of bleeding improved and the disseminated intravascular coagulation process was successfully controlled. The primary tumor and multiple metastatic bone lesions were remarkably shrunken and metabolically remitted after eight cycles of chemotherapy. In spite of progression, systemic chemotherapy is effective in disease control; further, the patient gained the longest survival time among cases of gastric cancer with disseminated intravascular coagulation. PMID:23844328

Lee, Dong Seok; Yoo, Seung Jin; Oh, Ho Suk; Kim, Eun Jung; Oh, Kwang Hoon; Lee, Sang Jin; Park, Jong Kyu; Ahn, Yong Chel; Eom, Dae-Woon

2013-01-01

362

Percutaneous Retrieval of Misplaced Intravascular Foreign Objects with the Dormia Basket: An Effective Solution  

International Nuclear Information System (INIS)

Purpose. We report our experience of the retrieval of intravascular foreign body objects by the percutaneous use of the Gemini Dormia basket. Methods. Over a period of 2 years we attempted the percutaneous removal of intravascular foreign bodies in 26 patients. Twenty-six foreign bodies were removed: 8 intravascular stents, 4 embolization coils, 9 guidewires, 1 pacemaker lead, and 4 catheter fragments. The percutaneous retrieval was achieved with a combination of guide catheters and the Gemini Dormia basket. Results. Percutaneous retrieval was successful in 25 of 26 patients (96.2%). It was possible to remove all the intravascular foreign bodies with a combination of guide catheters and the Dormia basket. No complication occurred during the procedure, and no long-term complications were registered during the follow-up period, which ranged from 6 months to 32 months (mean 22.4 months overall). Conclusion. Percutaneous retrieval is an effective and safe technique that should be the first choice for removal of an intravascular foreign body

363

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Spain | Language: Spanish 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 explicadas 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 complicati [...] ons 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 masses, 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

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

2002-10-01

364

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

Directory of Open Access Journals (Sweden)

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

2003-12-01

365

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  

Directory of Open Access Journals (Sweden)

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

2012-04-01

366

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 SciELO Chile | Language: Spanish 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, 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. 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 lymphoi [...] d 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.

2012-04-01

367

Linfoma cutáneo de células B grande de las piernas: presentación de un caso / Large B-cell skin lymphoma of the legs: a case presentation  

Scientific Electronic Library Online (English)

Full Text Available SciELO Cuba | Language: Spanish Abstract in spanish Introducción: los linfomas cutáneos primarios de células B se definen como una proliferación neoplásica de células B que se originan en la piel. El linfoma de células B grande de las piernas, es un linfoma agresivo con un predominio de células B grande que se presenta en las extremidades inferiores. [...] Existen múltiples clasificaciones con diferentes nomenclaturas; debido a la accesibilidad de la piel resulta relativamente sencillo tomar una biopsia, con lo que se obtienen muestras de lesiones precoces y más difíciles de diagnosticar. Objetivo: reportar un paciente con linfoma cutáneo de células B grande de la pierna. Caso Clínico: paciente masculino de 72 años, blanco, con presencia de múltiples tumores en las piernas, de varios meses de evolución, y se le diagnostica como un linfoma cutáneo de células B grande de las piernas. Conclusiones: el linfoma cutáneo de células B grande de la pierna es una enfermedad poco frecuente, que representan un subtipo clínico e histológico diferente de linfomas extranodales, no doloroso, de evolución buena, y buen pronóstico, cuya clasificación y origen celular es controvertido. El principal criterio de diagnóstico es la clínica y la histopatología. El tratamiento conservador se instala para esta enfermedad, se obtienen buenos resultados con la poliquimioterapia, además de otras alternativas como la terapia con anticuerpos monoclonales. Abstract in english Introduction: B-cell primary skin lymphomas are defined as neoplastic proliferation of B-cell originated on the skin. Large B-cell lymphoma of the leg is an aggressive lymphoma with predominance of large B-cell that appear in lower limbs. There are multiple classifications with different varieties. [...] Due to the accessibility of the skin, it is very easy to perform a biopsy and obtain samples of early lesions that are difficult to diagnose. Objective: to report a case of large B-cell skin lymphoma of the leg. Clinical Case: a 72 year-old, white man, came to the hospital complaining of several tumors on the legs that had appeared many months before. He was diagnosed a large B-cell skin lymphoma of the leg. Conclusions: large B-cell skin lymphoma of the leg is an infrequent disease that represents a different clinical and histological subtype of extranodular lymphoma. It is no painful with good recovery and prognosis but its cellular classification and origin is controversial. Diagnosis is based on clinical and histopathologic examination. This disease is treated with combination of chemotherapy and other alternatives such as monoclonal antibodies therapy.

Idalmis, Campollo Rodríguez; Mauricio, Socarrás Laborda; Patricia Alejandra, Castro Sánchez.

1037-10-01

368

Accumulation of /sup 99m/Tc-sulfur colloid by the lung and kidney following disseminated intravascular coagulation  

Energy Technology Data Exchange (ETDEWEB)

A patient is described who demonstrated accumulation of /sup 99m/Tc-sulfur colloid in both the lung and kidney following treatment for disseminated intravascular coagulation. This phenomenon has been demonstrated experimentally in animals following the induction of disseminated intravascular coagulation, but to our knowledge has not been previously described in humans.

Smith, F.W.; Brown, R.G.; Ash, J.M.; Gilday, D.L.

1980-06-01

369

Accumulation of /sup 99m/Tc-sulfur colloid by the lung and kidney following disseminated intravascular coagulation  

International Nuclear Information System (INIS)

A patient is described who demonstrated accumulation of /sup 99m/Tc-sulfur colloid in both the lung and kidney following treatment for disseminated intravascular coagulation. This phenomenon has been demonstrated experimentally in animals following the induction of disseminated intravascular coagulation, but to our knowledge has not been previously described in humans

370

Acetylcysteine for prevention of contrast-induced nephropathy after intravascular angiography: A systematic review and meta-analysis  

OpenAIRE

Abstract Background Contrast-induced nephropathy is an important cause of acute renal failure. We assess the efficacy of acetylcysteine for prevention of contrast-induced nephropathy among patients undergoing intravascular angiography. Methods We conducted a systematic review and meta-analysis of randomized controlled trials comparing prophylactic acetylcysteine plus hydration versus hydration alone in patients undergoing intravascular angiography. Studies were ...

Bagshaw Sean M; Ghali William A

2004-01-01

371

Imminent Cardiac Risk Assessment via Optical Intravascular Biochemical Analysis  

Energy Technology Data Exchange (ETDEWEB)

Heart disease is by far the biggest killer in the United States, and type II diabetes, which affects 8% of the U.S. population, is on the rise. In many cases, the acute coronary syndrome and/or sudden cardiac death occurs without warning. Atherosclerosis has known behavioral, genetic and dietary risk factors. However, our laboratory studies with animal models and human post-mortem tissue using FT-IR microspectroscopy reveal the chemical microstructure within arteries and in the arterial walls themselves. These include spectra obtained from the aortas of ApoE-/- knockout mice on sucrose and normal diets showing lipid deposition in the former case. Also pre-aneurysm chemical images of knockout mouse aorta walls, and spectra of plaque excised from a living human patient are shown for comparison. In keeping with the theme of the SPEC 2008 conference Spectroscopic Diagnosis of Disease this paper describes the background and potential value of a new catheter-based system to provide in vivo biochemical analysis of plaque in human coronary arteries. We report the following: (1) results of FT-IR microspectroscopy on animal models of vascular disease to illustrate the localized chemical distinctions between pathological and normal tissue, (2) current diagnostic techniques used for risk assessment of patients with potential unstable coronary syndromes, and (3) the advantages and limitations of each of these techniques illustrated with patent care histories, related in the first person, by the physician coauthors. Note that the physician comments clarify the contribution of each diagnostic technique to imminent cardiac risk assessment in a clinical setting, leading to the appreciation of what localized intravascular chemical analysis can contribute as an add-on diagnostic tool. The quality of medical imaging has improved dramatically since the turn of the century. Among clinical non-invasive diagnostic tools, laboratory tests of body fluids, EKG, and physical examination are still the first line of defense. However, with the fidelity of 64-slice CT imaging, this technique has recently become an option when the patient presents with symptoms of reduced arterial flow. Single photon emission computerized tomography (SPECT) treadmill exercise testing is a standard non-invasive test for decreased perfusion of heart muscle, but is time consuming and not suited for emergent evaluation. Once the invasive clinical option of catherization is chosen, this provides the opportunity for intravascular ultrasound (IVUS) imaging. As the probe is pulled through the artery, the diameter at different parts is measurable, and monochrome contrast in the constricted area reveals the presence of tissue with a different ultrasonic response. Also, via an optical catheter with a fiber-optic conductor, the possibly of spectroscopic analysis of arterial walls is now a reality. In this case, the optical transducer is coupled to a near-infrared spectrometer. Revealing the arterial chemical health means that plaque vulnerability and imminent risk could be assessed by the physician. The classical emergency use of catherization involves a contrast agent and dynamic X-ray imaging to locate the constriction, determine its severity, and possibly perform angioplasty, and stent placement.

Wetzel, D.; Wetzel, L; Wetzel, M; Lodder, R

2009-01-01

372

Fibronectin: blood turnover in normal animals and during intravascular coagulation  

International Nuclear Information System (INIS)

Plasma fibronectin (FN) binds fibrin in vitro by both noncovalent and covalent bonds and is decreased in DIC. In rabbits, conventionally purified 125I-FN had a complex blood clearance with a late t1/2 of 71 hr. A large portion was apparently altered, as evinced by rapid clearance and an intravascular/total body ratio (C1) of 0.28-0.51. 3H-labeled FN, made in vivo by injection of 3H amino acids, had a t1/2 of 73 hr. Crosstransfusion of 131I-FN and 3H-FN into a second set of animals gave similar t1/2s and C1s of 0.74-0.82, indicating the altered 125-FN was biologically screened in the first animals. Other animals were given 125I-fibrinogen and screened 131I-FN. Intravenous thrombin (50-60 U/kg/1 hr) caused a 25%-50% decrease in both 125I-fibrinogen and 131I-FN. Ancrod injection reduced fibrinogen by greater than 90% but had no effect on 131I-FN. 131I-FN levels did not change when thrombin was given after ancrod. No cross-linked FN-fibrinogen alpha-chain was found in the plasma, nor was the thrombin-induced fall in FN affected by spermidine blockade. These experiments demonstrate that FN and fibrin bind in vivo during defibrination and are rapidly cleared from the blood. The abnormal fibrin resulting from ancrod either does not bind FN in vivo or does so reversibly

373

Protection against high intravascular pressure in giraffe legs  

DEFF Research Database (Denmark)

The high blood pressure in giraffe leg arteries renders giraffes vulnerable to edema. We investigated in 11 giraffes whether large and small arteries in the legs and the tight fascia protect leg capillaries. Ultrasound imaging of foreleg arteries in anesthetized giraffes and ex vivo examination revealed abrupt thickening of the arterial wall and a reduction of its internal diameter just below the elbow. At and distal to this narrowing, the artery constricted spontaneously and in response to norepinephrine and intravascular pressure recordings revealed a dynamic, viscous pressure drop along the artery. Histology of the isolated median artery confirmed dense sympathetic innervation at the narrowing. Structure and contractility of small arteries from muscular beds in the leg and neck were compared. The arteries from the legs demonstrated an increased media thickness-to-lumen diameter ratio, increased media volume, and increased numbers of smooth muscle cells per segment length and furthermore, they contracted more strongly than arteries from the neck (500 ± 49 vs. 318 ± 43 mmHg; n = 6 legs and neck, respectively). Finally, the transient increase in interstitial fluid pressure following injection of saline was 5.5 ± 1.7 times larger (n = 8) in the leg than in the neck. We conclude that 1) tissue compliance in the legs is low; 2) large arteries of the legs function as resistance arteries; and 3) structural adaptation of small muscle arteries allows them to develop an extraordinary tension. All three findings can contribute to protection of the capillaries in giraffe legs from a high arterial pressure.

Petersen, Karin K; HØrlyck, Arne

2013-01-01

374

Monolithic CMUT-on-CMOS integration for intravascular ultrasound applications.  

Science.gov (United States)

One of the most important promises of capacitive micromachined ultrasonic transducer (CMUT) technology is integration with electronics. This approach is required to minimize the parasitic capacitances in the receive mode, especially in catheter-based volumetric imaging arrays, for which the elements must be small. Furthermore, optimization of the available silicon area and minimized number of connections occurs when the CMUTs are fabricated directly above the associated electronics. Here, we describe successful fabrication and performance evaluation of CMUT arrays for intravascular imaging on custom-designed CMOS receiver electronics from a commercial IC foundry. The CMUT-on-CMOS process starts with surface isolation and mechanical planarization of the CMOS electronics to reduce topography. The rest of the CMUT fabrication is achieved by modifying a low-temperature micromachining process through the addition of a single mask and developing a dry etching step to produce sloped sidewalls for simple and reliable CMUT-to-CMOS interconnection. This CMUT-to-CMOS interconnect method reduced the parasitic capacitance by a factor of 200 when compared with a standard wire-bonding method. Characterization experiments indicate that the CMUT-on-CMOS elements are uniform in frequency response and are similar to CMUTs simultaneously fabricated on standard silicon wafers without electronics integration. Ex- periments on a 1.6-mm-diameter dual-ring CMUT array with a center frequency of 15 MHz show that both the CMUTs and the integrated CMOS electronics are fully functional. The SNR measurements indicate that the performance is adequate for imaging chronic total occlusions located 1 cm from the CMUT array. PMID:23443701

Zahorian, Jaime; Hochman, Michael; Xu, Toby; Satir, Sarp; Gurun, Gokce; Karaman, Mustafa; Degertekin, F Levent

2011-12-01

375

Dosimetric effects of source-offset in intravascular brachytherapy  

International Nuclear Information System (INIS)

In intravascular brachytherapy (IVBT), radioactive sources can be displaced (offset) laterally from the center of the lumen and/or longitudinally from the desired location due to the cardiac motion and/or the absence of a source-centering device. The purpose of this work is to study the dosimetric impact of such a source offset. Dose effects of both lateral and longitudinal source offsets with or without the presence of a calcified plaque or a metallic stent are calculated for the three most commonly used sources (32P, 90Sr/90Y, and 192Ir). The MCNP Monte Carlo code is used in the calculation. Static and random source offsets are considered. The major results include that (a) dose can be changed significantly (by a factor of up to 4) due to a static lateral source offset; (b) this dose variation is reduced if the lateral source offset is considered as random moving within the vessel (the dose at the 2 mm reference radial distance is increased by 5-15 % for the three sources in the case of the 2D random offset studied); (c) the presence of a calcified plaque and/or a metallic stent worsens the dosimetric effects; (d) the longitudinal random source offset results in a reduction (15-18 %) in the effective treatment length; (e) the dose effects of source offsets for the beta source are higher than those for the gamma source. The data presented in this paper may be used for IVBT treatment planning or for dosimetric analysis of tr planning or for dosimetric analysis of treatment outcome. The dose change due to the source offset should be considered in dose prescription. The reduction of effective treatment length should be taken into account in selection of a proper source length to ensure an adequate coverage of the treatment target

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