title: Common bile duct dilatation after cholecystectomy: open versus laparoscopic procedure.
abstract: OBJECTIVE
  Cholecystectomy as a factor causing common bile duct (CBD) dilatation has been debated. The aim of this study was to investigate CBD dilatation after cholecystectomy in patients with a preoperative CBD diameter of <6mm.
  
  
  METHODS
  We retrospectively analyzed the cases of 101 patients who underwent cholecystectomy. These patients were divided into 2 groups, the open cholecystectomy group (OC group) and the laparoscopic cholecystectomy group (LC group).
  
  
  RESULTS
  The postoperative mean CBD diameter was 5.80±0.49mm in the OC group and 5.75±0.47mm in the LC group; the diameters were not significantly different between the 2 groups (p<0.6699). With regard to the change in body weight after surgery, in the OC group 71.1%, patients gained weight, 20% showed no change and 8.9% lost weight; the corresponding numbers in the LC group were 75%, 23.2% and 1.8% patients, respectively. Thus, there were no significant differences in terms of weight changes between the 2 groups (p<0.6607, p<0.6973 and p<0.1690, respectively).
  
  
  CONCLUSIONS
  For patients with preoperative CBD diameters of <6mm no compensatory dilatation occurs after open or laparoscopic cholecystectomy.
authors.affiliation: Department of Surgery, Yokohama Central Hospital, Yokohama, Japan. ooida.takatsugu@yokochu.jp
authors.forename: Takatsugu
authors.initials: T
authors.lastname: Oida
authors.forename: Kenji
authors.initials: K
authors.lastname: Mimatsu
authors.forename: Hisao
authors.initials: H
authors.lastname: Kano
authors.forename: Atsushi
authors.initials: A
authors.lastname: Kawasaki
authors.forename: Youichi
authors.initials: Y
authors.lastname: Kuboi
authors.forename: Nobutada
authors.initials: N
authors.lastname: Fukino
authors.forename: Kazutoshi
authors.initials: K
authors.lastname: Kida
authors.forename: Sadao
authors.initials: S
authors.lastname: Amano
mesh_terms: D000328:Adult; D000368:Aged; D001649:Bile Duct Diseases / Q000209:etiology* / Q000473:pathology; D002763:Cholecystectomy / Q000009:adverse effects*; D017081:Cholecystectomy, Laparoscopic / Q000009:adverse effects*; D003135:Common Bile Duct / Q000473:pathology*; D004108:Dilatation, Pathologic; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D018570:Risk Assessment; D012307:Risk Factors; D016896:Treatment Outcome; D015430:Weight Gain; D015431:Weight Loss