Case 228: Choledochal Cyst

Diagnostic Category:

Clinical Presentation:

18 year old woman with chronic abdominal pain. Ultrasound (not shown) revealed an abnormality upon which other imaging modalities were performed

MR: Todani type 4a

Imaging Findings:

Choledochal cyst (Todani classification type 4). Axial T2w MR image, coronal post contrast T1W MR image, MRCP and cholangiogram demonstrate fusiform dilatation of the entire extrahepatic bile duct with extension of dilatation into right and left main intrahepatic bile ducts.