[Histogenesis of Kaposi's sarcoma]

The origin of Kaposi's sarcoma from the endothelium and fibroblast-like cells of a vascular wall is proven on the basis of complex pathomorphological, immunomorphological, autoradiographic and electron microscopical investigation of tumour biopsies. Depending upon the predominating cell type of origin, the tumour in its different parts, may form the structures of either different variants of angiomas or fibrosarcomas.