Anal Canal Carcinoma

**Semantic type:** Neoplastic Process

**Definition:** A squamous cell carcinoma or less frequently an adenocarcinoma, often associated with human papillomavirus (HPV) infection. Homosexual men are at particular risk. The most important prognostic factors are tumor stage and nodal status.

**Synonyms:** - Anal Canal Cancer - Anal Canal Cancer - Anal Canal and Perianal Gland Cancer - Anal Canal and Perianal Gland Carcinoma