title: A Rare Case of Colonic Leiomyosarcoma in Association with Ulcerative Colitis.
abstract: Ulcerative colitis (UC) is known to be associated with an increased risk of colorectal cancer. However, the occurrence of non-epithelial malignancies is uncommon. An elevated lesion in the descending colon was found in a 51-year-old woman with a 30-year history of UC. Despite tumor progression, repeated biopsies showed no cancerous findings. Because the lesion was highly suspected to be a malignant tumor, a partial colectomy was performed. The pathological diagnosis was leiomyosarcoma. Leiomyosarcoma of the gastrointestinal tract is rare, and this is only the third known case reported in patients with UC.
authors.affiliation: Department of Gastroenterology and Hepatology, University of Tsukuba, Japan.
authors.forename: Daisuke
authors.initials: D
authors.lastname: Akutsu
authors.forename: Yuji
authors.initials: Y
authors.lastname: Mizokami
authors.forename: Hideo
authors.initials: H
authors.lastname: Suzuki
authors.forename: Masahiko
authors.initials: M
authors.lastname: Terasaki
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Narasaka
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Kaneko
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Matsui
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Enomoto
authors.forename: Taiki
authors.initials: T
authors.lastname: Sato
authors.forename: Ichinosuke
authors.initials: I
authors.lastname: Hyodo
mesh_terms: D003082:Colectomy; D003093:Colitis, Ulcerative / Q000150:complications*; D003110:Colonic Neoplasms / Q000150:complications* / Q000601:surgery; D005260:Female; D006801:Humans; D007890:Leiomyosarcoma / Q000150:complications* / Q000601:surgery; D008875:Middle Aged