title: Choledochal cysts in adults.
abstract: OBJECTIVE
  Choledochal cyst is rarely diagnosed in adulthood. When complicated by biliary tract malignancy, the disease has a distinct presentation and carries a dismal prognosis despite radical surgical resection.
  
  
  METHODS
  Retrospective study.
  
  
  METHODS
  Tertiary referral center.
  
  
  METHODS
  A retrospective study was performed on 30 adult patients who presented with choledochal cyst from January 1, 1989, to December 31, 2000.
  
  
  METHODS
  The clinical presentation, management, and outcome of patients with and without biliary tract malignancy.
  
  
  RESULTS
  Nine patients (30%) had biliary tract malignancy complicating choledochal cyst (group A). Compared with 21 patients without malignancy (group B), group A patients had a significantly higher incidence of previous internal drainage operations for choledochal cyst (P =.049) and presentation with cholangitis (P =.03). Four patients in group A underwent pancreaticoduodenectomy and 3 received a palliative biliary drainage operation. The overall median survival of patients in group A was 12 months. Complete excision of choledochal cyst and Roux-en-Y hepaticojejunostomy were performed for all patients in group B, among whom 2 underwent concomitant hemihepatectomy. The operative morbidity and mortality were 14% and 0%, respectively, and there were no long-term complications with a median follow-up of 66 months.
  
  
  CONCLUSIONS
  Biliary tract malignancy complicating choledochal cyst in adults should be suspected in patients with a history of internal drainage of choledochal cyst and presentation with cholangitis. Complete excision of choledochal cyst with Roux-en-Y hepaticojejunostomy is the treatment of choice for patients without malignancy and can be performed with low operative morbidity and absence of long-term complications in adult patients.
authors.affiliation: Centre for Liver Disease, Department of Surgery, University of Hong Kong Medical Centre, Queen Mary Hospital, 102 Pokfulam Rd, Hong Kong. clliu@hkucc.hku.hk
authors.forename: Chi-Leung
authors.initials: CL
authors.lastname: Liu
authors.forename: Sheung-Tat
authors.initials: ST
authors.lastname: Fan
authors.forename: Chung-Mau
authors.initials: CM
authors.lastname: Lo
authors.forename: Chi-Ming
authors.initials: CM
authors.lastname: Lam
authors.forename: Ronnie Tung-Ping
authors.initials: RT
authors.lastname: Poon
authors.forename: John
authors.initials: J
authors.lastname: Wong
mesh_terms: D000293:Adolescent; D000328:Adult; D001661:Biliary Tract Neoplasms / Q000150:complications / Q000175:diagnosis / Q000601:surgery; D002761:Cholangitis / Q000150:complications; D015529:Choledochal Cyst / Q000150:complications / Q000175:diagnosis / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010166:Palliative Care; D012086:Reoperation; D012189:Retrospective Studies