A 7-year-old female with a type I choledochal cyst underwent an explor
atory laparotomy. A Roux-en-Y choledochojejunostomy was done following
cyst excision. The patient was re-explored 8 days later for an anasto
motic bile leak and high fever. A round-worm was found obstructing the
jejunal lumen at the porta hepatis, resulting in a biliary leak. Vari
ous aspects of biliary ascariasis are discussed along with the case re
port.