Purpose: To evaluate the efficacy of percutaneous transhepatic choledochoplasty of the main biliary stricture, using a 16F silastic foley catheter, in patients suffering from recurrent pyogenic cholangitisMaterials and Methods: In nine patients who had undergone stenting procedure at the site of the main stricture after the total removal of biliary stones, a 16F silastic catheter was held in position for 1-4 (mean, 2.7) months. Using ultrasonogrophy, we assessed the diameter of the bile duct 5cm above the main stricture.Results: During the follow-up period of 1-30(mean, 18.1)months, the diameter of the bile duct above the main stricture was, in all cases, under 3mm.Conclusion: In patients with recurrent pyogenic cholangitis, choledochoplasty of the biliary stricture, using a 16F silastic catheter, was therapeutically effective.