Anal Kaposi Sarcoma

**Semantic type:** Neoplastic Process

**Definition:** A Kaposi sarcoma arising from the anus. HIV-positive patients have an increased risk of developing Kaposi sarcoma in the perianal region.

**Synonyms:** - Anal Kaposi's Sarcoma - Kaposi's Sarcoma of Anus - Kaposi's Sarcoma of the Anus