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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Most commonly seen Choledochal cyst
assistant
The correct answer is  Most common Choledochal cyst Type I>Type IV >Type III Type I is the most common It is the dilation of extrahepatic biliary tree Type Ia: cystic dilation Type Ib: Focal segmental dilation Type Ic : Fusiform dilation Treatment : Roux-en-Y hepatic jejunostomy Ref: Sabiston 20th edition 1510-1511