A 9-year-old boy presents with recurrent attacks of abdominal pain and intermittent jaundice. MRCP shows fusiform dilatation of the extrahepatic bile duct along with a single cystic dilatation of the left intrahepatic duct. Which Todani type of choledochal cyst is this?
- A Type I
- B Type IVa ✓
- C Type III
- D Type II
Correct answer: B. Type IVa
Explanation
Todani type IVa denotes multiple cystic dilatations involving both intrahepatic and extrahepatic bile ducts, exactly as described. Type I is dilatation confined to the extrahepatic duct, type II is a true diverticulum of the supraduodenal duct, and type III is a choledochocele within the duodenal wall. Complete excision rather than drainage is preferred because of malignant risk.
Reference: Blumgart's Surgery of the Liver, Biliary Tract and Pancreas, 6th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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