Anal canal cancer | Anal canal cancer NOS | Anal canal cancer stage unspecified | Anal carcinoma | Anal carcinoma NOS | Anal margin carcinoma NOS | Anal margin carcinoma stage unspecified | Cloacogenic carcinoma stage unspecified | Malignant neoplasm of anal canal | Malignant neoplasm of anus, unspecified | Anal cancer | AIDS-related anal cancer stage unspecified | Anal adenocarcinoma | Metastatic anal adenocarcinoma | Anus Neoplasms | Neoplasms, Anal | Anal Neoplasms | Anal Neoplasm | Neoplasm, Anal | Neoplasms, Anus | Anus Neoplasm | Neoplasm, Anus | Anal Cancer | Anal Cancers | Cancer, Anal | Cancers, Anal | Cancer of the Anus | Cancer of Anus | Anus Cancer | Anus Cancers |