A woman was admitted to hospital after several episodes of severe upper right abdominal
pain and vomiting. Previously she had had cholecystectomy for gallbladder stones,
and later endoscopic papillotomy to treat common duct stone. Endoscopic retrograde
cholangiography diagnosed an Ascaris worm in the common bile duct. One end of the
20 cm long living worm was caught in a Dormia basket when it protruded through the
papillotomy opening, and the worm extracted with the endoscope.
Endoscopic retrograde cholangiopancreaticography - Biliary ascaris
