Leiomyoma of the anal canal: report of a case.
D001003:Anal Canal / Q000473:pathology; D001005:Anus Neoplasms / Q000473:pathology / Q000601:surgery; D006801:Humans; D007889:Leiomyoma / Q000473:pathology / Q000601:surgery; D008297:Male; D008875:Middle Aged