Intracorporeal electrohydraulic lithotripsy for intrahepatic bile duct stone formation after choledochal cyst excision.

An 18-year-old girl who had undergone excision of a choledochal cyst and Roux-en-Y hepatico-jejunostomy at another hospital when 23 months old was referred to our department because of recurrent cholangitis. Radiological investigations showed stones lying in minimally dilated, right posterior intrahepatic bile ducts (IHBD). At laparotomy, the hepatico-jejunostomy site was incised, and a flexible endoscope inserted into the IHBD. Multiple stones packed in the IHBD were easily fragmented using an electro-hydraulic lithotripsy (EHL) device inserted through the endoscope, and removed. There were no EHL-related complications, and her postoperative progress was uneventful. She is currently well with no episodes of cholangitis after a follow-up period of 3 years. EHL is a simple, effective alternative method for removing IHBD stones after choledochal cyst excision. To the best of our knowledge, this is the first report of EHL being used to remove stones that developed in the IHBD after choledochal cyst excision.