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skos:definition |
MSH: B-cell lymphoid tumors that occur in association with AIDS. Patients often present with an advanced stage of disease and highly malignant subtypes including BURKITT LYMPHOMA; IMMUNOBLASTIC LARGE-CELL LYMPHOMA; PRIMARY EFFUSION LYMPHOMA; and DIFFUSE, LARGE B-CELL, LYMPHOMA. The tumors are often disseminated in unusual extranodal sites and chromosomal abnormalities are frequently present. It is likely that polyclonal B-cell lymphoproliferation in AIDS is a complex result of EBV infection, HIV antigenic stimulation, and T-cell-dependent HIV activation.,NCI: An aggressive lymphoma that develops in HIV-positive patients. There is a significant increase in the incidence of lymphomas associated with the AIDS epidemic in the last two decades. These lymphomas are usually extranodal, most often express a B-cell phenotype and morphologically are classified as Burkitt, diffuse large B-cell, and Hodgkin lymphomas. The prognosis is closely related to the severity of immunodeficiency.
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