Kaposi sarcoma is a cancerous disorder where cancer occurs in cells that line the blood vessels. It occurs as skin tumors or surfaces that are soft like lungs, digestive tract and lymph nodes. People having HIV virus in the US are affected by Epidemic KS mostly. Secondly, Classic KS occurs mainly in older people of Mediterranean, Eastern European, and Middle Eastern heritage and it is more common in men than in women. People from the equatorial parts are affected by Endemic KS. Lastly, Iatrogenic KS occurs in persons whose immunity system is weak due to prior surgeries.