[A case of common bile duct stone developed due to a surgical clip as a nidus: an experience of successful management by endoscopy].

Surgical clips can migrate into the biliary tract and act as a nidus for stone formation. We report a case of common bile duct stone developed due to a surgical clip in a 48-year-old man. Endoscopic retrograde cholangiogram revealed a common bile duct stone a with metallic clip in it.