title: Management and outcomes of bowel obstruction in patients with stage IV colon cancer: a population-based cohort study.
abstract: BACKGROUND
  Bowel obstruction is a common complication of late-stage abdominal cancer, especially colon cancer, which has been investigated predominantly in small, single-institution studies.
  
  
  OBJECTIVE
  We used a large, population-based data set to explore the surgical treatment of bowel obstruction and its outcomes after hospitalization for obstruction among patients with stage IV colon cancer.
  
  
  METHODS
  This was a retrospective cohort study.
  
  
  METHODS
  We identified 1004 patients aged 65 years or older in the Surveillance, Epidemiology and End Results-Medicare database diagnosed with stage IV colon cancer January 1, 1991 to December 31, 2005, who were later hospitalized for bowel obstruction.
  
  
  METHODS
  We describe outcomes after hospitalization and analyzed the associations between surgical treatment of obstruction and outcomes.
  
  
  RESULTS
  Hospitalization for bowel obstruction occurred a median of 7.4 months after colon cancer diagnosis, and median survival after obstruction was approximately 2.5 months. Median hospitalization for obstruction was about 1 week and in-hospital mortality was 12.7%. Between discharge and death, 25% of patients were readmitted to the hospital at least once for obstruction, and, on average, patients lived 5 days out of the hospital for every day in the hospital between obstruction diagnosis and death. Survival was 3 times longer in those whose obstruction claims suggested an adhesive obstruction origin. In multivariable models, surgical compared with nonsurgical management was not associated with prolonged survival (p = 0.134).
  
  
  CONCLUSIONS
  Use of an administrative database did not allow determination of quality of life or relief of obstruction as an outcome, nor could nonsurgical interventions, eg, endoscopic stenting or octreotide, be assessed.
  
  
  CONCLUSIONS
  In this population-based study of patients with stage IV colon cancer who had bowel obstruction, overall survival following obstruction was poor irrespective of treatment. Universally poor outcomes suggest that a diagnosis of obstruction in the setting of advanced colon cancer should be considered a preterminal event.
authors.affiliation: Department of Surgery, College of Physicians and Surgeons, Columbia University, New York, New York 10032, USA.
authors.forename: Megan
authors.initials: M
authors.lastname: Winner
authors.forename: Stephen J
authors.initials: SJ
authors.lastname: Mooney
authors.forename: Dawn L
authors.initials: DL
authors.lastname: Hershman
authors.forename: Daniel L
authors.initials: DL
authors.lastname: Feingold
authors.forename: John D
authors.initials: JD
authors.lastname: Allendorf
authors.forename: Jason D
authors.initials: JD
authors.lastname: Wright
authors.forename: Alfred I
authors.initials: AI
authors.lastname: Neugut
mesh_terms: D000230:Adenocarcinoma / Q000150:complications* / Q000401:mortality / Q000473:pathology; D000368:Aged; D000369:Aged, 80 and over; D000970:Antineoplastic Agents / Q000627:therapeutic use*; D003082:Colectomy / Q000379:methods*; D003110:Colonic Neoplasms / Q000150:complications* / Q000473:pathology / Q000601:surgery; D005260:Female; D017052:Hospital Mortality / Q000639:trends; D006801:Humans; D015994:Incidence; D007415:Intestinal Obstruction / Q000453:epidemiology / Q000209:etiology* / Q000628:therapy; D007420:Intestine, Large; D007902:Length of Stay / Q000639:trends; D008297:Male; D009367:Neoplasm Staging; D011379:Prognosis; D016016:Proportional Hazards Models; D012189:Retrospective Studies; D018426:SEER Program; D015996:Survival Rate / Q000639:trends; D014481:United States / Q000453:epidemiology
chemical_list: D000970:Antineoplastic Agents