Cholelithiasis is a common problem in the United States, affecting 10 to 15 per cent of the population. Although only one per cent of these patients have intrahepatic gallstones their discovery intraoperatively may present a technical challenge for the surgeon. This paper describes a simple method for dislodging difficult intrahepatic biliary stones: modification of a rigid choledochoscope to permit use of a biliary Fogarty catheter and Segura basket under direct visualization.
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