[Extracorporeal gallbladder lithotripsy: technology, practical methods, results and current value].

Abstract

Extracorporeal shock wave lithotripsy of gallstones is a safe and well-tolerated procedure. Patients are now treated without general anesthesia and, increasingly, on an outpatient basis. Skin petechiae and transient hematuria are the most common side effects. Episodes of biliary colic are common in the follow-up period, but more serious adverse side effects such as cholecystitis and pancreatitis are distinctly uncommon. It is estimated that only 15% to 20% of all patients with symptomatic cholelithiasis are suitable lithotripsy candidates. As our knowledge of the procedure grows, it seems clear that the best results are obtained in patients with solitary radiolucent stones less than or equal to 20 mm, with stone-free rates at 12 months above 80%, for this selected group of patients. Adjuvant oral bile-acid dissolution therapy should be used in conjunction with gallstone lithotripsy. Gallstone recurrence remains to be established by clinical studies. Therapy for gallstones in 1991 has to be reevaluated by an interdisciplinary approach, taking into account not only open cholecystectomy, but also other modalities such as medical dissolution, laparoscopic surgery, percutaneous cholecystolithotomy and extra-corporeal shock wave lithotripsy. The appeal of the laparoscopic approach will substantially reduce the pool of patients for lithotripsy. Nevertheless, lithotripsy will continue to be a viable treatment option for patients with a single radiolucent stone. It is an outpatient procedure and doesn't require any incision or general anesthesia.