Buschke-Löwenstein tumor and immunity.

We report the case of an alcoholic patient, 41 years old, with negative results of serologic tests for human immunodeficiency virus (HIV) with a perianal Buschke-Löwenstein tumor present for eight years and exceptionally large. The patient's cell-mediated immunity was evaluated by two functional tests: the Multitest IMC (Institut Mérieux, Lyon) and the dinitrochlorobenzene (DNCB) test. The patient neither responded to any Multitest antigens nor was sensitized by DNCB. We consider that the immune short-age in this patient could influence the appearance of the Buschke-Löwenstein tumor.