Anal Cancer TNM Finding v8

**Semantic type:** Finding

**Definition:** A finding about one or more characteristics of anal cancer, following the rules of the TNM AJCC v8 classification system. This staging system applies to all carcinomas arising in the anal canal, including carcinomas that arise within anorectal fistulas and those arising in the perianal area (anal margin). High-grade neuroendocrine carcinomas (small cell neuroendocrine carcinoma and large cell neuroendocrine carcinoma) are staged using this system. There is no AJCC staging system for anal mucosal melanomas and anal well-differentiated neuroendocrine tumors. (from AJCC 8th Ed.)

**Synonyms:** - Anal Canal and Perianal (Anal Margin) Carcinoma TNM Finding v8 - Anal Carcinoma TNM Finding v8