[A usually large cell non-Hodgkin lymphoma of B-cell phenotype, arising from the anus. Lymphomas originating from the anal region are rare in the general population, but they are seen with a higher frequency in HIV-positive patients, particularly homosexual men. ( NCI )]
UMLS (NCI) C1332268Lymphoma of Anus
Lymphoma of the Anus
Primary Anal Lymphoma