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Expression of immunohistochemical markers in patients with AIDS-related lymphoma
Barreto, Luciana; Azambuja, Denize; Morais, José Carlos de.
  • Barreto, Luciana; Instituto Nacional de Câncer. Hematology, Oncology and Pathology Services. Rio de Janeiro. BR
  • Azambuja, Denize; Instituto Nacional de Câncer. Hematology, Oncology and Pathology Services. Rio de Janeiro. BR
  • Morais, José Carlos de; Universidade Federal do Rio de Janeiro. University Hospital. Hematology and Pathology Services. BR
Braz. j. infect. dis ; 16(1): 74-77, Jan.-Feb. 2012. ilus, tab
Artigo em Inglês | LILACS | ID: lil-614554
ABSTRACT
AIDS-related lymphomas (ARL) present high biological heterogeneity. For better characterization of this type of lymphoma, the objectives of the present study were to evaluate the expression of immunohistochemical markers of cell differentiation (CD10, Bcl-6, MUM-1) and determine cell origin profile according to Hans' classification of diffuse large B-cell lymphoma in AIDS patients. This study included 72 consecutive patients with ARL diagnosed at the University Hospital, Universidade Federal do Rio de Janeiro (UFRJ) and at the Brazilian Instituto Nacional de Câncer (INCA) from 2000 to 2006. The morphologic distribution of the lymphomas was the following 61 percent were diffuse large B-cell lymphomas (DLBCLs), 15 percent were Burkitt's lymphomas, 13 percent were plasmablastic lymphomas, 10 percent were high-grade lymphomas and 1 percent was follicular lymphoma. The positivity for each immunohistochemical marker in DLBCLs, Burkitt's lymphoma and plasmablastic lymphoma was respectively CD20, 84 percent, 100 percent, and 0; CD10, 55 percent, 100 percent, and 0; Bcl-6, 45 percent, 80 percent, and 0; MUM-1, 41 percent, 20 percent, and 88 percent. A higher positivity of CD20 (84 percent x 56 percent, p = 0.01) was found in DLBCL compared to non-DLBCL; in Burkitt's lymphomas a higher positivity of CD10 (100 percent x 49 percent, p = 0.04) and Bcl-6 (80 percent x 39 percent, p = 0.035) were found compared to non-Burkitt's lymphomas. Germinal center (GC) profile was detected in 60 percent of DLBCLs. Our study suggests particular findings in ARL, as the most frequent phenotype was GC, different from HIV-negative patients.
Assuntos


Texto completo: DisponíveL Índice: LILACS (Américas) Assunto principal: Neprilisina / Biomarcadores Tumorais / Linfoma Relacionado a AIDS / Fatores Reguladores de Interferon Limite: Adolescente / Adulto / Idoso / Criança / Feminino / Humanos / Masculino Idioma: Inglês Revista: Braz. j. infect. dis Assunto da revista: Doenças Transmissíveis Ano de publicação: 2012 Tipo de documento: Artigo País de afiliação: Brasil Instituição/País de afiliação: Instituto Nacional de Câncer/BR / Universidade Federal do Rio de Janeiro/BR

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Texto completo: DisponíveL Índice: LILACS (Américas) Assunto principal: Neprilisina / Biomarcadores Tumorais / Linfoma Relacionado a AIDS / Fatores Reguladores de Interferon Limite: Adolescente / Adulto / Idoso / Criança / Feminino / Humanos / Masculino Idioma: Inglês Revista: Braz. j. infect. dis Assunto da revista: Doenças Transmissíveis Ano de publicação: 2012 Tipo de documento: Artigo País de afiliação: Brasil Instituição/País de afiliação: Instituto Nacional de Câncer/BR / Universidade Federal do Rio de Janeiro/BR