Kaposi's sarcoma has many unusual features: for example, the pronounced male
preponderance; its appearance in" crops" rather than as primary tumour with metastases; a
substantial rate of spontaneous remission; the predictability of involved sites; the lack of
aneuploidy, and the strong association with immunodeficiency. These features and other
evidence suggest that it is not a malignant neoplasm but a benign, potentially controllable
and reversible hyperplasia.