title: [Amelanotic anorectal melanoma].
authors: Servicio de Cirugía de Colon y Recto, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, México, D.F. quinhec@hotmail.com
authors: Q H
authors: QH
authors: González
authors: J A
authors: JA
authors: Bahena-Aponte
authors: B
authors: B
authors: Martínez-Benítez
mesh_terms: D003113:Colonoscopy; D006801:Humans; D008297:Male; D018328:Melanoma, Amelanotic / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D008875:Middle Aged; D012004:Rectal Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D014057:Tomography, X-Ray Computed