<prompt> Biliary stricture developing after laparascopic choice cystectomy usually occurs at which pa of the common bile ductUpperMiddleLowerAll side with equal frequency  <response>: Biliary strictures post cholecystectomy commonly occur in CBD,that too near the confluence of right and left hepatic ducts;.i.e., in the upper pa of CBD. Reference.SRBs manual of surgery,5th edition,page no:658. 