Human immunodeficiency virus-negative tonsil Kaposi's sarcoma and Hodgkin's disease: case report and review of the literature.

Kaposi's sarcoma (KS) is a multicentric malignant neoplastic vascular disorder characterized by multiple violet-colored nodules of the skin. The coexistence of KS with other primary malignancies, especially of the lymphoreticular system, has been frequently noted. However, the association of Hodgkin's disease with KS is a rare occurrence. In this article we present the case of a 33-year-old man with human immunodeficiency virus (HIV)-negative KS of the tonsil, occurring in the radiotherapy field for Hodgkin's disease treated 20 years ago.