title: Anorectal leiomyosarcomas.
abstract: In adults, rectal leiomyosarcoma is uncommon, and anal leiomyosarcoma is even more rare. We report one patient with anal leiomyosarcoma and one patient with a biphasic clinical history, with three occurrences of perineal leiomyosarcomas after surgically resected rectal leiomyoma. We discuss the characteristics of these rare entities based upon a review of the literature.
authors.affiliation: Department of Surgery (Colorectal Division), Far Eastern Memorial Hospital, Taipei, Taiwan, ROC.
authors.forename: T K
authors.initials: TK
authors.lastname: Wang
authors.forename: M T
authors.initials: MT
authors.lastname: Chung
mesh_terms: D000368:Aged; D001005:Anus Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D017809:Fatal Outcome; D005260:Female; D006801:Humans; D007890:Leiomyosarcoma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D008875:Middle Aged; D012004:Rectal Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D012008:Recurrence