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Title: Human immunodeficiency virus-associated precursor T-lymphoblastic leukemia/lymphoblastic lymphoma: report of a case and review of the literature. Author: Lorenzon D, Perin T, Bulian P, De Re V, Caggiari L, Michieli M, Manuele R, Spina M, Gattei V, Fasan M, Tirelli U, Canzonieri V. Journal: Hum Pathol; 2009 Jul; 40(7):1045-9. PubMed ID: 19427018. Abstract: We describe a case of human immunodeficiency virus-associated T-lymphoblastic leukemia/lymphoblastic lymphoma in a 43-year-old Italian man with a history of human immunodeficiency virus infection lasting 9 years. Immunoperoxidase stains showed that neoplastic cells were positive for CD3, TdT, CD45, CD10, CD1a, CD2, CD7, CD5, and CD43 (focal). The proliferation rate was approximately 70%, assessed by Ki-67/MIB-1 staining. Flow cytometry of the marrow aspirate revealed an intermediate/cortical T-lymphoblastic phenotype: negative for surface CD3 and positive for cytoplasmic CD3, CD1a, TdT, CD2, CD7, CD5, and CD8, with partial coexpression of dimCD4. Analysis of T-cell receptor gamma polymerase chain reaction products showed clonality. T-lymphoblastic leukemia/lymphoblastic lymphoma is a very rare occurrence in the clinical setting of human immunodeficiency virus infection. It is not listed in the World Health Organization classification of lymphomas associated with human immunodeficiency virus infection. Only 4 cases of human immunodeficiency virus-associated T-lymphoblastic leukemia/lymphoblastic lymphoma are reported in the current medical literature.[Abstract] [Full Text] [Related] [New Search]