title: [Malignant melanoma of the transitional zone of the anus and rectum].
mesh_terms: D000368:Aged; D001005:Anus Neoplasms / Q000473:pathology; D006801:Humans; D008297:Male; D008545:Melanoma / Q000473:pathology*; D008875:Middle Aged; D012004:Rectal Neoplasms / Q000473:pathology*