title: Etiology of small bowel obstruction.
abstract: BACKGROUND
  Small bowel obstruction (SBO) is a major cause of morbidity and financial expenditure in hospitals around the world. The leading cause of SBO in the western world has become adhesions. The goal of this study was to determine the causes of SBO.
  
  
  METHODS
  The medical records of all patients admitted to one hospital between 1986 and 1996 with the diagnosis of SBO were reviewed retrospectively. This included 552 patients accounting for 1,001 admissions.
  
  
  RESULTS
  The etiology of SBO was adhesions (74%), Crohn's disease (7%), neoplasia (5%), hernia (2%), radiation (1%), and miscellaneous (11%). Patients with Crohn's disease were younger than patients with other etiologies. Surprisingly, recurrence rates were similar for patients treated operatively as for those treated nonoperatively with the exception in the hernia group where higher recurrence rates were noted for patients initially treated in a nonoperative manner.
  
  
  CONCLUSIONS
  The most common cause of SBO is adhesions followed by Crohn's disease and neoplasia.
authors.affiliation: Division of Colorectal Surgery, Sir Mortimer B. Davis-Jewish General Hospital and McGill University, Montreal, Quebec, Canada.
authors.forename: G
authors.initials: G
authors.lastname: Miller
authors.forename: J
authors.initials: J
authors.lastname: Boman
authors.forename: I
authors.initials: I
authors.lastname: Shrier
authors.forename: P H
authors.initials: PH
authors.lastname: Gordon
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D015331:Cohort Studies; D003424:Crohn Disease / Q000150:complications; D005260:Female; D006547:Hernia / Q000150:complications; D006801:Humans; D007410:Intestinal Diseases / Q000150:complications; D007414:Intestinal Neoplasms / Q000150:complications; D007415:Intestinal Obstruction / Q000209:etiology* / Q000601:surgery / Q000628:therapy; D007421:Intestine, Small / Q000503:physiopathology* / Q000528:radiation effects; D008297:Male; D008875:Middle Aged; D011832:Radiation Injuries / Q000150:complications; D012008:Recurrence; D012189:Retrospective Studies; D018709:Statistics, Nonparametric; D000267:Tissue Adhesions / Q000150:complications