title: Value of CT to predict surgically important bowel and/or mesenteric injury in blunt trauma: performance of a preliminary scoring system.
abstract: OBJECTIVE
  To evaluate the performance of a computed tomography (CT) diagnostic score to predict surgical treatment for blunt bowel and/or mesentery injury (BBMI) in consecutive abdominal trauma.
  
  
  METHODS
  This was a retrospective observational study of 805 consecutive abdominal traumas with 556 patients included and screened by an abdominal radiologist blinded to the patient outcome, to evaluate numerous CT findings and calculate their diagnostic performances. These CT findings were compared using univariate and multivariate analysis between patients who had a laparotomy-confirmed BBMI requiring surgical repair, and those without BBMI requiring surgery. A CT score was obtained with an internal bootstrap validation.
  
  
  RESULTS
  Fifty-six patients (10.1 %) had BBMI requiring surgery. Nine CT signs were independently associated with BBMI requiring surgery and were used to develop a CT diagnostic score. The AUC of our model was 0.98 (95 % CI 0.96-100), with a ≥5 cut-off. Its diagnostic performance was determined by internal validation: sensitivity 91.1-100 %, specificity 85.7-97.6 %, positive predictive value 41.4-82.3 % and negative predictive value 98.9-100 %. Bowel wall discontinuity and mesenteric pneumoperitoneum had the strongest association with BBMI requiring surgery (OR = 128.9 and 140.5, respectively).
  
  
  CONCLUSIONS
  We developed a reliable CT scoring system which is easy to implement and highly predictive of BBMI requiring surgery.
  
  
  CONCLUSIONS
  • Finding of bowel wall discontinuity or mesenteric pneumoperitoneum indicates BBMI requiring surgery. • Arterial mesenteric vessel extravasation requires surgery when in association with other CT findings. • Our CT scoring system has excellent diagnostic performance in predicting BBMI requiring surgery.
authors.affiliation: Department of Medical Imaging, CHU Lapeyronie, 371 avenue Gaston Giraud, 34295, Montpellier, France.
authors.forename: Claire
authors.initials: C
authors.lastname: Faget
authors.affiliation: Department of Medical Imaging, CHU Lapeyronie, 371 avenue Gaston Giraud, 34295, Montpellier, France.
authors.forename: Patrice
authors.initials: P
authors.lastname: Taourel
authors.affiliation: Department of Intensive Care and Anesthesiology, CHU Lapeyronie, Montpellier, France.
authors.forename: Jonathan
authors.initials: J
authors.lastname: Charbit
authors.affiliation: Department of Medical Imaging, CHU Lapeyronie, 371 avenue Gaston Giraud, 34295, Montpellier, France.
authors.forename: Alban
authors.initials: A
authors.lastname: Ruyer
authors.affiliation: Department of Medical Imaging, CHU Lapeyronie, 371 avenue Gaston Giraud, 34295, Montpellier, France.
authors.forename: Chakib
authors.initials: C
authors.lastname: Alili
authors.affiliation: Department of Medical Information and Statistics, UMR 729 MISTEA, CHU Montpellier, Montpellier, France.
authors.forename: Nicolas
authors.initials: N
authors.lastname: Molinari
authors.affiliation: Department of Medical Imaging, CHU Lapeyronie, 371 avenue Gaston Giraud, 34295, Montpellier, France. i-millet@chu-montpellier.fr.
authors.forename: Ingrid
authors.initials: I
authors.lastname: Millet
mesh_terms: D000007:Abdominal Injuries / Q000000981:diagnostic imaging*; D000328:Adult; D005260:Female; D006801:Humans; D007813:Laparotomy; D008297:Male; D008643:Mesentery / Q000000981:diagnostic imaging / Q000293:injuries*; D008875:Middle Aged; D011237:Predictive Value of Tests; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed / Q000379:methods*; D014949:Wounds, Nonpenetrating / Q000000981:diagnostic imaging*; D055815:Young Adult
keywords: Blunt trauma; Bowel injury; MDCT; Mesenteric injury; Scoring system