Common bile duct obstruction caused by hydatid daughter cysts--management by endoscopic retrograde sphincterotomy.

Four patients with cholestatic jaundice due to ruptured hydatid liver cyst into the biliary tract underwent endoscopic retrograde sphincterotomy with clearance of the bile ducts. Prompt relief of jaundice followed the produced and no complications occurred. After the procedure all patients received medical treatment (Mebendazole) for 3-4 months and were well at a mean follow-up of 8 months. We conclude that endoscopic retrograde sphincterotomy is a safe and effective treatment for cholestatic jaundice caused by hydatid daughter cysts obstructing the bile ducts. This method may serve as an alternative to surgery in selected, high risk, patients.