title: Surgical experience of 204 cases of adult choledochal cyst disease over 14 years.
abstract: BACKGROUND
  This study presents our 14-year surgical experience with adult choledochal cyst disease (CCD), focusing on the clinical outcomes after surgical treatment.
  
  
  METHODS
  Medical records of 204 adult patients who had undergone surgery for CCD were reviewed retrospectively.
  
  
  RESULTS
  Median patient age was 40.2 years, and 157 (77%) of the patients were female. Todani classification was type I in 116 patients (56.9%), type II in 1 patient (0.5%), type IVa in 86 patients (42.2%), and type V in 1 patient (0.5%). Extrahepatic cyst excision and hepaticojejunostomy were performed in 185 patients (90.7%). Major perioperative complications occurred in 5 patients (2.5%), resulting in no mortality. Late complications occurred in 48 patients (23.6%). Concurrent cancer was diagnosed in 20 patients (9.8%). Mean age of patients with or without biliary cancer was 48.1±13.2 years and 39.1±11.8 years, respectively (P=0.001). Anomalous union of the pancreaticobiliary duct was more frequently associated with gallbladder cancer than with bile duct cancer. De novo malignancy at the cyst remnant occurred in 2 patients (1%). The survival outcomes in CCD patients with concurrent biliary cancer were comparable to those in cancer patients without CCD.
  
  
  CONCLUSIONS
  As a result of diverse features of adult CCD, various clinical problems occurred after surgical excision. Surgical treatment for adult patients with CCDs having complex features should be individualized to maintain a balance between risk of surgery and potential risk of late complications.
authors.affiliation: Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, 138-736, Korea.
authors.forename: Min-Jeong
authors.initials: MJ
authors.lastname: Cho
authors.forename: Shin
authors.initials: S
authors.lastname: Hwang
authors.forename: Young-Joo
authors.initials: YJ
authors.lastname: Lee
authors.forename: Ki-Hun
authors.initials: KH
authors.lastname: Kim
authors.forename: Chul-Soo
authors.initials: CS
authors.lastname: Ahn
authors.forename: Deok-Bog
authors.initials: DB
authors.lastname: Moon
authors.forename: Sung-Koo
authors.initials: SK
authors.lastname: Lee
authors.forename: Myung-Hwan
authors.initials: MH
authors.lastname: Kim
authors.forename: Sang-Soo
authors.initials: SS
authors.lastname: Lee
authors.forename: Do-Hyun
authors.initials: DH
authors.lastname: Park
authors.forename: Sung-Gyu
authors.initials: SG
authors.lastname: Lee
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000714:Anastomosis, Surgical; D001652:Bile Ducts / Q000601:surgery; D001661:Biliary Tract Neoplasms / Q000401:mortality / Q000601:surgery; D015529:Choledochal Cyst / Q000145:classification / Q000601:surgery*; D003251:Constriction, Pathologic; D005260:Female; D006801:Humans; D007582:Jejunostomy / Q000379:methods; D008297:Male; D008875:Middle Aged; D010183:Pancreatic Ducts / Q000601:surgery; D012189:Retrospective Studies; D055815:Young Adult