Intraoperative endoscopic electrohydraulic lithotripsy of pancreatic stones.

Two male patients with complications associated with chronic pancreatitis are described. In each patient, preoperative examinations revealed a large stone obstructing the main duct in the head of the pancreas. Lateral pancreaticojejunostomy was performed to relieve pain and prevent further attacks of pancreatitis. During each operation, the stone was fragmented under direct visual control with the use of a flexible choledochoscope and a contact electrohydraulic lithotriptor. The stone was removed and ductal flow through the head of the pancreas was reestablished. Our experience shows that endoscopic electrohydraulic lithotripsy facilitates operative removal of pancreatic stones deeply located in the head of the pancreas.