Kaposi’s Sarcoma, rare type of cancer affecting vascular tissue. The condition is characterized by red or purple patches of abnormal tissue growth that can be located under the skin, in organs, or in the lining of the nose, throat, or mouth. The patches may be painful. A mild form of the disease most often affects older Italian, Jewish, and African Bantu males. A more aggressive form occurs in about one-third of patients with acquired immunodeficiency syndrome (AIDS), primarily in homosexual or bisexual men. According to the American Cancer Society, Kaposi’s sarcoma causes or contributes to death in perhaps 30 percent of AIDS cases. Kaposi’s sarcoma is also associated with a type of herpes virus.