Kaposi Sarcoma (Kaposi's Sarcoma; Multiple Idiopathic Hemorrhagic Sarcoma) By Gregory L Wells, MD, Ada West Dermatology and Dermatopathology Reviewed / Revised Sep 2022 View Patient Education Classification Symptoms and Signs Diagnosis Treatment Key Points Topic Resources Kaposi Sarcoma (Classic) Kaposi Sarcoma (Not HIV-Related) Kaposi Sarcoma (AIDS-Associated) Kaposi Sarcoma (Early Stage) Kaposi Sarcoma (Upper Extremity) Kaposi sarcoma is a multicentric vascular tumor caused by herpesvirus type 8.