Choledochal Cyst. In: Doherty GM. eds. Quick Answers Surgery. McGraw-Hill; Accessed April 02, 2021.
- Type I cysts (fusiform dilation of common bile duct [CBD]) account for 85-90%
- Type II (true diverticula of CBD) 1-2% of cases
- Type III (choledochocele—dilation of distal/intramural portion of CBD) < 2% of cases
- Type IV (multiple cysts involving intrahepatic and extrahepatic ducts) as high as 15% of cases in some series
- Type V (cystic malformation of intrahepatic ducts) rare
- 3-5% incidence of carcinoma
Soares KC, Arnaoutakis DJ, Kamel I, Rastegar N, Anders R, Maithel S, Pawlik TM. Choledochal cysts: presentation, clinical differentiation, and management. J Am Coll Surg. 2014 Dec;219(6):1167-80.
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See also: Clinical Overview: Choledochal cyst. Elsevier Point of Care. Updated October 7, 2019.