Management of retained bile duct stones: a prospective open trial comparing extracorporeal and intracorporeal lithotripsy.

BACKGROUND

Endoscopic management of common bile duct stones has become the approach of choice, especially in patients with high surgical risk. Problems are encountered if there are large stones or a duct stenosis. For these difficult stones, shock wave technology serves as an alternative to surgical intervention.

METHODS

A total of 125 patients with common bile duct stones in whom conventional endoscopic treatment had failed were selected and treated either by extracorporeal piezoelectric lithotripsy (ESWL, n = 79) or intracorporeal electrohydraulic lithotripsy (EHL, n = 46). The average age of our patients was 70 years.

RESULTS

In the ESWL group visualization of the stones by ultrasound and ensuing treatment were possible in 71 out of 79 patients (90%); stones could be fragmented in 68 patients. The biliary tree could then be completely freed of calculi in 62 of 79 patients, a success rate of 78.5%. In the EHL group, stones were successfully fragmented in 38 of 46 patients; 34 patients (74%) eventually became stone free. Thirty-day mortality was zero in both groups. Combined treatment including ESWL, EHL, and intracorporeal laser lithotripsy was finally successful in 118 patients (94%).

CONCLUSIONS

Endoscopic management in combination with the lithotripsy techniques described can be recommended as the method of choice for treating difficult common bile duct stones. A success rate of almost 100% and a mortality rate of 0% is now the established standard, even in elderly and unstable patients.