Kaposi’s sarcoma (KS) is a cancer that causes patches cancer cells and blood cells to grow in the lining of the mouth, nose and throat or in other organs. There are four types of Kaposi’s sarcoma. The most common type is AIDS-related KS, which develops in those infected with HIV. Classic KS occurs mainly in older people of Mediterranean, Eastern European, and Middle Eastern descent. Endemic KA occurs in people living in Equatorial Africa, and latrogenic KS occurs in people whose immune systems are compromised after an organ transplant.