Diffuse immunoblastic sarcoma from benign lymphoid proliferation.
D000163:Acquired Immunodeficiency Syndrome / Q000473:pathology*; D001402:B-Lymphocytes / Q000473:pathology; D006801:Humans; D008223:Lymphoma / Q000473:pathology*; D008232:Lymphoproliferative Disorders / Q000473:pathology*; D008297:Male; D008875:Middle Aged