Lymphoma, AIDS-Related

**Definition:** 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.

**Tree numbers:** - C04.557.386.480.150.450 - C15.604.515.569.480.150.450 - C20.683.515.761.480.150.450

**Synonyms:** - Lymphoma, AIDS-Associated - Lymphoma, HIV-Related - AIDS-Associated Lymphoma - AIDS-Related Lymphoma - HIV-Related Lymphoma