Frequency and anatomic distribution of lymphadenopathic Kaposi's sarcoma in the acquired immunodeficiency syndrome: an autopsy series.

Histologic material from 52 autopsies of persons who had died of the acquired immunodeficiency syndrome (AIDS) were reviewed. The study group included 23 Haitians, 19 homosexual men, five intravenous drug abusers, two hemophiliacs (type A), and three persons at unknown risk. Nineteen of the patients (36.5 per cent) had typical Kaposi's sarcoma alone, but 49 (94.2 per cent) had the inflammatory variant of Kaposi's sarcoma as well as typical Kaposi's sarcoma. Inflammatory Kaposi's sarcoma was found in all risk groups studied. In all cases of typical Kaposi's sarcoma, histomorphologic transitions of inflammatory Kaposi's sarcoma to typical Kaposi's sarcoma were observed. Lymph nodes and spleen were the organs most commonly involved by both typical and inflammatory Kaposi's sarcoma. The findings indicate that Kaposi's sarcoma is more common and has a wider morphologic spectrum in AIDS than is generally appreciated.