title: Role of preoperative helical CT before laparoscopic cholecystectomy: evaluation of gallbladder and peritoneal adhesion.
abstract: OBJECTIVE
  The purpose of this study was to assess the value of preoperative helical CT for the detection of adhesion of the gallbladder or surrounding peritoneum.
  
  
  METHODS
  Dynamic-enhanced helical CT of the abdomen was obtained before laparoscopic cholecystectomy in 47 patients. Images were reconstructed with a 5-mm interval. Appearances on CT images were correlated with operative findings, and useful findings for predicting gallbladder or peritoneal adhesion were determined by univariate and multivariate analysis.
  
  
  RESULTS
  Patients with gallbladder or peritoneal adhesion often have gallbladder wall thickening, gallbladder wall enhancement, and increased density of the pericholecystic fat more frequently than patients without adhesion on both precontrast and postcontrast CT. Each of these findings was significant on univariate analysis. On multivariate analysis, increased density of the pericholecystic fat and focal attenuation increase in the liver were significant factors for predicting gallbladder or peritoneal adhesion.
  
  
  CONCLUSIONS
  Increased density or stranding of pericholecystic fat and transient focal hepatic attenuation increase at dynamic arterial-phase CT indicates gallbladder and peritoneal adhesion.
authors.affiliation: Department of Diagnostic Radiology, Kumamoto University Postgraduate School, 1-1-1 Honjo, Kumamoto 860-8556, Japan.
authors.forename: Shoji
authors.initials: S
authors.lastname: Morishita
authors.forename: Shin
authors.initials: S
authors.lastname: Honda
authors.forename: Kazuo
authors.initials: K
authors.lastname: Awai
authors.forename: Yoshimi
authors.initials: Y
authors.lastname: Hatanaka
authors.forename: Yoshiko
authors.initials: Y
authors.lastname: Hayashida
authors.forename: Masanori
authors.initials: M
authors.lastname: Imuta
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Yamashita
mesh_terms: D017081:Cholecystectomy, Laparoscopic; D002769:Cholelithiasis / Q000601:surgery; D005260:Female; D005704:Gallbladder / Q000473:pathology*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D010532:Peritoneal Diseases / Q000000981:diagnostic imaging*; D011300:Preoperative Care; D000267:Tissue Adhesions / Q000000981:diagnostic imaging; D036542:Tomography, Spiral Computed