Lesions of Kaposi's sarcoma may Resemble cysts, bullae, lymphangioma circumscriptum, hemangioma, lymphoma, and granuloma pyogenicum.1 In the early stages the histopathologic finding is inflammation, whereas in the later stages the neoplastic features are most marked. As a result, depending on which elements predominate, the picture may be that of a hemangioma, lymphangioma, granuloma, fibroma, spindle-cell sarcoma, or angiosarcoma. We have recently observed two patients with Kaposi's sarcoma who presented unusual cystic masses in addition to the lesions more characteristic of the disease. A search of the literature disclosed the statement in many articles on Kaposi's sarcoma that cystlike tumors may rarely be observed. However, only a few specific reports concerning such lesions have been published in the literature. Pelagatti,2 in 1905, was perhaps the first to give a description of such a malformation. It involved a wrist, with features "never, by