Kaposi's sarcoma is a fascinating disease. The confusion about the nature of the disease is well illustrated in the several dozen synonyms which have been suggested since 1868, when Kaposi first described it as primary idiopathic sarcoma of the skin. Bluefarb has collected together in an elaborately illustrated book his own considerable experience, together with a multitude of reports from various parts of the world dealing with this confusing disorder. The protean manifestations, the peculiar slow progress, and the great number of remarkable complications may bring a victim of Kaposi's disease into the office of almost any specialist or general practitioner. No doubt it is not nearly as rare as reported cases would indicate. Current experiences show that it is not necessarily confined to members of the Jewish race, as was thought formerly. Whether it is primarily a bizarre variety of infectious granuloma or a neoplasm with curious granulomatous proclivities