Multiple perineal sinuses in non-hodgkin's lymphoma.

A 60 years old male presented with a 10 years history of chronic discharging perineal sinuses with inguinal lymphadenopathy. Biopsy of the inguinal lymph node revealed follicular B-cell non-Hodgkin's lymphoma while the biopsy of the sinuses was non-specific. It was diagnosed as a case of primary nodal NHL with secondary cutaneous manifestations of multiple perineal sinuses (paraneoplastic dermatosis). After two courses of chemotherapy, the discharge from the sinuses disappeared and the lesions healed by scarring.