RT Book, Section A1 Doherty, Gerard M. SR Print(0) ID 58107200 T1 Choledochal Cyst T2 Quick Answers Surgery YR 2010 FD 2010 PB The McGraw-Hill Companies PP New York, NY SN LK accesssurgery.mhmedical.com/content.aspx?aid=58107200 RD 2024/03/28 AB • 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