title: Anal transitional zone neoplasia in patients with familial adenomatous polyposis after restorative proctocolectomy and IPAA: incidence, management, and oncologic and functional outcomes.
abstract: BACKGROUND
  Restorative proctocolectomy and IPAA in patients with familial adenomatous polyposis may leave residual anal transitional zone mucosa that is prone to neoplasia.
  
  
  OBJECTIVE
  The aim of this study was to evaluate the long-term control of neoplasia at the IPAA, the functional outcomes, and the influence of anastomotic technique on these results.
  
  
  METHODS
  : This research is a retrospective cohort study from a prospective database.
  
  
  METHODS
  The investigation took place in a high-volume specialized colorectal surgery department.
  
  
  METHODS
  Patients with familial adenomatous polyposis who underwent IPAA between 1983 and 2010 were included.
  
  
  METHODS
  The primary outcomes measured were functional outcomes, quality of life, and the incidence of neoplasia in the anal transitional zone.
  
  
  RESULTS
  Eighty-six patients underwent mucosectomy and 174 underwent stapled anastomosis with mean 155 ± 99 and 95 ± 70 months follow-up. Eighteen patients (20.9%) in the mucosectomy group and 59 patients (33.9%) in the stapled group developed anal transitional zone adenomas (p = 0.03). One of 86 (1.2%) patients undergoing mucosectomy and 3 of 174 (1.7%) patients undergoing stapled anastomosis developed cancer in the anal transitional zone (p > 0.05). Three of these patients underwent an abdominoperineal resection, but one who refused abdominoperineal resection underwent transanal excision with neoileoanal anastomosis. Patients undergoing a mucosectomy had a significantly higher rate of anastomotic stricture, but other complications were similar. Incontinence, seepage, and pad usage were higher in the mucosectomy group. Cleveland global quality-of-life score was 0.8 ± 0.2 in patients with handsewn anastomoses and 0.8 ± 0.3 in patients with a stapled anastomoses (p > 0.05).
  
  
  CONCLUSIONS
  This study was limited by its nonrandomized retrospective design.
  
  
  CONCLUSIONS
  Risk for the development of adenomas in the anal transitional zone is higher after a stapled IPAA than after a mucosectomy with handsewn anastomosis. However, control of anal transitional zone neoplasia results in a similar risk of cancer development. Because the stapled procedure is associated with better long-term functional outcomes than a mucosectomy, stapled IPAA is the preferable procedure for most patients with familial adenomatous polyposis.
authors.affiliation: Department of Colorectal Surgery, Sanford R. Weiss, MD Center for Hereditary Colorectal Neoplasia, Digestive Disease Institute, Cleveland Clinic, Cleveland, Ohio 44195, USA.
authors.forename: Yavuz
authors.initials: Y
authors.lastname: Ozdemir
authors.forename: Matthew F
authors.initials: MF
authors.lastname: Kalady
authors.forename: Erman
authors.initials: E
authors.lastname: Aytac
authors.forename: Ravi P
authors.initials: RP
authors.lastname: Kiran
authors.forename: Hasan H
authors.initials: HH
authors.lastname: Erem
authors.forename: James M
authors.initials: JM
authors.lastname: Church
authors.forename: Feza H
authors.initials: FH
authors.lastname: Remzi
mesh_terms: D011125:Adenomatous Polyposis Coli / Q000473:pathology / Q000601:surgery*; D000328:Adult; D001005:Anus Neoplasms / Q000453:epidemiology* / Q000209:etiology / Q000601:surgery; D003106:Colon / Q000473:pathology / Q000503:physiopathology / Q000601:surgery; D003113:Colonoscopy; D003672:Defecation; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D015994:Incidence; D007413:Intestinal Mucosa / Q000473:pathology / Q000601:surgery; D008297:Male; D016609:Neoplasms, Second Primary / Q000453:epidemiology* / Q000209:etiology / Q000601:surgery; D009820:Ohio / Q000453:epidemiology; D016737:Proctocolectomy, Restorative; D011788:Quality of Life; D012086:Reoperation; D012189:Retrospective Studies; D013536:Suture Techniques / Q000009:adverse effects* / Q000295:instrumentation; D013537:Sutures / Q000009:adverse effects*; D013997:Time Factors; D016896:Treatment Outcome