- multicentric, malignant neoplastic vascular proliferation characterized by the development of bluish-red cutaneous nodules, usually on the lower extremities, most often on the toes or feet, and slowly increasing in size and number and spreading to more proximal areas; occurs spontaneously in Jewish and Italian males; aggressive variant in young children is endemic in some areas of Africa; a third form occurs in about 0.04% of kidney transplant patients; there is also a high incidence in AIDS patients; human herpesvirus 8 is the suspected cause.
- (KAP-o-seez sar-KO-ma) A type of cancer characterized by the abnormal growth of blood vessels that develop into skin lesions or occur internally.
- A malignant neoplasm characterized by a vascular proliferation which usually contains blunt endothelial cells. Erythrocyte extravasation and hemosiderin deposition are frequently present. The most frequent site of involvement is the skin; however it may also occur internally. It generally develops in people with compromised immune systems including those with acquired immune deficiency syndrome (AIDS).