Computed tomography of choledochocele : A case report.

Abstract

Choledochocele is an extremely rare congenital anomaly of the common bile duct, causing abdominal pain, pancreatitis and lithiasis. A choledochocele may be easily overlooked by the conventional diagnostic methods such as upper gastrointestinal series or abdominal ultrasound.Computed tomography (CT) is an effective means of diagnosis. One case of choledochocele in a 8-year-old boy with right upper quadrant pain was reported, and the findings on CT and endoscopic retrograde cholangiopancreatography are described. The patient was treated by endoscopic sphincterotomy and, after 1-month follow up, is without complaint. Choledochocele can be diagnosed by CT and can be recognized by the finding of a cystic mass contiguous with the distal common bile duct that invaginates into the duodenum.