title: [Basal cell carcinoma of the perianal region: a case report and literature review].
abstract: The literature reports an annual incidence of 5,900 cases of anal cancer in the developed countries. These involve three different anatomic zones: carcinoma of the anal canal, perianal carcinoma (formerly known as carcinoma of the anal margin, located at a distance of less than 5cm from the anal margin), and carcinoma of the perianal skin (at a distance greater than 5cm from the anal margin). Basal cell carcinoma of the perianal region is an uncommon tumor (0.27% of all diagnosed basal cell carcinomas) that in the majority of cases is treated by resection with disease-free margins. It must be differentiated from the basaloid and epidermoid variants of carcinoma, given that it has good outcome and its spread potential is practically null.
authors: Subespecialidad Cirugía de Colon y Recto INCMNSZ, México, Distrito Federal, México.
authors: L A
authors: LA
authors: Espino-Urbina
authors: A
authors: A
authors: Espinosa-de-los-Monteros
authors: J
authors: J
authors: Dominguez-Cherit
authors: F
authors: F
authors: Chable-Montero
authors: O
authors: O
authors: Vergara-Fernandez
mesh_terms: D001005:Anus Neoplasms / Q000473:pathology* / Q000601:surgery; D002280:Basal Cell Carcinoma / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged