title: Gastrointestinal complications of laparoscopic Roux-en-Y gastric bypass surgery: clinical and imaging findings.
abstract: OBJECTIVE
  To report the complications and imaging findings in a large group of patients who underwent Roux-en-Y gastric bypass (GBP) surgery.
  
  
  METHODS
  Four hundred sixty-three patients were evaluated for upper gastrointestinal (GI) complications following Roux-en-Y GBP surgery. Major complications were those that required surgical or radiologic intervention and minor complications were those that resolved spontaneously. The time from surgery to complication and findings from upper GI series and computed tomography (CT) of the major complications and minor leaks were reviewed.
  
  
  RESULTS
  Forty-four patients had 56 major complications: 23 small-bowel obstructions (14 internal hernias and nine adhesions), 16 major leaks, 15 anastomotic strictures, and two fistulas. There were 13 minor leaks and 18 other complications. Internal hernias were late complications and had a variety of findings at upper GI series and CT. Leaks were early complications and usually originated from the gastrojejunal anastomosis; findings from upper GI series and CT demonstrated extraluminal gas, contrast material, or both. Anastomotic strictures were late complications and were diagnosed at upper GI series with rounded dilation of the pouch and delayed emptying.
  
  
  CONCLUSIONS
  Upper GI complications that required intervention occurred in 9.5% of patients. CT and upper GI series can depict most major complications.
authors.affiliation: Department of Radiology, University of Pittsburgh Medical Center, 200 Lothrop St, Pittsburgh, PA 15213, USA.
authors.forename: Arye
authors.initials: A
authors.lastname: Blachar
authors.forename: Michael P
authors.initials: MP
authors.lastname: Federle
authors.forename: Karen M
authors.initials: KM
authors.lastname: Pealer
authors.forename: Sayeed
authors.initials: S
authors.lastname: Ikramuddin
authors.forename: Philip R
authors.initials: PR
authors.lastname: Schauer
mesh_terms: D000328:Adult; D000713:Anastomosis, Roux-en-Y; D003287:Contrast Media; D005260:Female; D015390:Gastric Bypass / Q000379:methods*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009767:Obesity, Morbid / Q000601:surgery; D011183:Postoperative Complications / Q000000981:diagnostic imaging* / Q000453:epidemiology; D012307:Risk Factors; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome
chemical_list: D003287:Contrast Media