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Percutaneous removal of retained intrahepatic stones with a pre-shaped angulated catheter: review of 96 patients

Department of Radiology, Seoul National University Hospital, Seoul 110–744, Korea

Intrahepatic biliary stone disease is prevalent in East Asia and there is a high frequency of retained intrahepatic stones after surgical treatment. Percutaneous removal of retained intrahepatic stones with a pre-shaped angulated catheter and a Dormier basket was attempted in a group of 96 patients who had a T-tube. Seventy-six had multiple intrahepatic stones, confined to one hepatic lobe in 52 patients. Stones were exclusively intrahepatic in 68 cases. Biliary strictures were present in 92 cases (95.8%). A combination of techniques was used including pre-shaped angulated catheters, irrigation suction, balloon dilatation of strictures, crushing of large stones and extracorporeal Shockwave lithotripsy. Retained stones were completely removed in 48 cases, and incompletely removed in 22 cases. The overall success rate was 72.9%. There were only minor complications. No mortality or significant morbidity requiring hospitalization occurred. Angular deformity, stricture of bile ducts and impacted stones were the most frequent factors responsible for failure or incomplete removal of retained stones. Fluoroscopically guided percutaneous interventional procedures with a pre-shaped angulated catheter are useful complementary procedures to surgery for patients with intrahepatic stones. The major benefits of an individually angulated catheter are safety and easy access to small peripheral bile ducts.

Key Words: Liver • Calculi • Bile ducts • Stone extraction

Received for publication February 5, 1991. Revision received May 28, 1991. Accepted for publication July 2, 1991.

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