What is Kaposi Sarcoma (KS) ? A rare type of treatable cancer of the endothelial cells of the blood vessels and lymphatic system. Abnormal cells of KS form purple, red, or brown blotches or tumors on the skin called lesions or on mucous membranes that are in line with the gastrointestinal (GI) tract (mouth, pharynx, esophagus, stomach, small intestine, colon, rectum and anus) and other organs like the liver and lungs. Kaposi Sarcoma is more common in men and in patients with suppressed immune systems.
