title: Surgical resections of ulcerative colitis associated with dysplasia or carcinoma.
abstract: BACKGROUND
  Ulcerative colitis (UC) patients have an increased risk of colorectal dysplasia and carcinoma. The purpose of this study was to analyze the clinical features and surgical treatment of ulcerative colitis associated with dysplasia or carcinoma.
  
  
  METHODS
  We operated on 41 UC patients since April 2000. Twelve of the cases were associated with dysplasia or carcinoma. Ten patients were male and two were female; the median age was 58.0 years, and the average duration of disease was 19.2 years. Nine cases were pancolitis type and three were left-sided type. Six cases were remission-relapsing type and six were chronic inflammation type. In 10 of 12 cases, dysplasia or carcinoma was diagnosed before the operations. Nine cases were primary operations and two were second-time operations.
  
  
  RESULTS
  Among ten patients who underwent primary operations, four patients had open surgery and six patients had hand-assisted laparoscopic surgery (HALS). Seven patients received anus/anal sphincter-preserving operations with reconstruction by the ileal pouch technique. Ileal pouch anal-canal anastomosis (IPACA) was performed in five cases and ileal pouch anal anastomosis (IPAA) in two cases. Abdomino-peritoneal resection was performed in two cases, proctcolectomy with permanent ileostomy in one case, and right hemicolectomy in one case. A 39-year-old patient was unresectable due to dissemination of the carcinoma. A 55-year-old patient who underwent IPACA showed night soiling postoperatively. Other patients who received IPAA and IPACA showed favorable anal function postoperatively. Histological examination showed low-grade dysplasia in two cases, high-grade dysplasia in three cases, and adenocarcinoma in seven cases. In the seven cases of adenocarcinoma, four, two, and one cases were stage 1, 3, and 4 according to TNM classification. Three of five cases with dysplasia were detected by surveillance colonoscopy. All patients with carcinoma were symptomatic and did not undergo surveillance colonoscopy.
  
  
  CONCLUSIONS
  IPACA by HALS was safely performed as an anal-preserving operation in UC patients with dysplasia or carcinoma. Non-anal-preserving operations for aged patients showed a preferable postoperative course. Surveillance colonoscopy is essential for detecting dysplasia before the development of carcinoma.
authors.affiliation: Department of Surgery, Dokkyo Medical University Koshigaya Hospital, 2-1-50, Minami Koshigaya, Koshigaya, Saitama, 343-8555, Japan. shinsame@me.com.
authors.forename: Shinichi
authors.initials: S
authors.lastname: Sameshima
authors.affiliation: Department of Surgery, Dokkyo Medical University Koshigaya Hospital, 2-1-50, Minami Koshigaya, Koshigaya, Saitama, 343-8555, Japan. koketsu-tky@umin.ac.jp.
authors.forename: Shinichiro
authors.initials: S
authors.lastname: Koketsu
authors.affiliation: Department of Surgery, Dokkyo Medical University Koshigaya Hospital, 2-1-50, Minami Koshigaya, Koshigaya, Saitama, 343-8555, Japan. hrt-503-1@hrt-tokyo.jp.
authors.forename: Emiko
authors.initials: E
authors.lastname: Takeshita
authors.affiliation: Department of Surgery, Dokkyo Medical University Koshigaya Hospital, 2-1-50, Minami Koshigaya, Koshigaya, Saitama, 343-8555, Japan. caster3946@hotmail.co.jp.
authors.forename: Yawara
authors.initials: Y
authors.lastname: Kubota
authors.affiliation: Department of Surgery, Dokkyo Medical University Koshigaya Hospital, 2-1-50, Minami Koshigaya, Koshigaya, Saitama, 343-8555, Japan. okuyama615@gmail.com.
authors.forename: Takashi
authors.initials: T
authors.lastname: Okuyama
authors.affiliation: Department of Surgery, Dokkyo Medical University Koshigaya Hospital, 2-1-50, Minami Koshigaya, Koshigaya, Saitama, 343-8555, Japan. windows_town@yahoo.co.jp.
authors.forename: Kazuyuki
authors.initials: K
authors.lastname: Saito
authors.affiliation: Department of Pathology, Dokkyo Medical University Koshigaya Hospital, 2-1-50, Minami Koshigaya, Koshigaya, Saitama, 343-8555, Japan. yoshi@dokkyomed.ac.jp.
authors.forename: Yoshihiko
authors.initials: Y
authors.lastname: Ueda
authors.affiliation: Department of Medical Examination, Shiba Park Clinic, 2-4-1 Shibakouen, Minato-ku, Tokyo, 105-0011, Japan. sawada@shibapark-clinic.jp.
authors.forename: Toshio
authors.initials: T
authors.lastname: Sawada
authors.affiliation: Department of Surgery, Dokkyo Medical University Koshigaya Hospital, 2-1-50, Minami Koshigaya, Koshigaya, Saitama, 343-8555, Japan. modokkyo@yahoo.co.jp.
authors.forename: Masatoshi
authors.initials: M
authors.lastname: Oya
mesh_terms: D000230:Adenocarcinoma / Q000209:etiology / Q000473:pathology / Q000601:surgery*; D000328:Adult; D000368:Aged; D003093:Colitis, Ulcerative / Q000150:complications / Q000473:pathology / Q000601:surgery*; D003110:Colonic Neoplasms / Q000209:etiology / Q000473:pathology / Q000601:surgery*; D003113:Colonoscopy; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D011183:Postoperative Complications; D011230:Precancerous Conditions / Q000209:etiology / Q000473:pathology / Q000601:surgery*; D016737:Proctocolectomy, Restorative; D011379:Prognosis; D012307:Risk Factors