title: Large choledochocoele: difficulties in radiological diagnosis.
abstract: BACKGROUND
  A choledochocoele is a dilatation of the intramural portion of the distal common bile duct within the duodenal wall. It usually presents with recurrent crises of right upper quadrant pain, hyperamylasaemia or jaundice.
  
  
  METHODS
  We present a 12-year-old boy with a choledochocoele that was missed on several US examinations despite its large size.
  
  
  RESULTS
  Findings on US, IV cholangiography, upper gastrointestinal contrast studies, ERCP and surgery are shown. The histological findings as well as the usual differential diagnosis are discussed.
authors.affiliation: Hospital General Universitario de Alicante, Servicio de Radiodiagnóstico, Avda. Maestro Alonso, 109, E-03 010 Alicante, Spain.
authors.forename: J J
authors.initials: JJ
authors.lastname: Arenas-Jiménez
authors.forename: J
authors.initials: J
authors.lastname: Gómez-Fernández-Montes
authors.forename: F
authors.initials: F
authors.lastname: Mas-Estellés
authors.forename: H
authors.initials: H
authors.lastname: Cortina-Orts
mesh_terms: D002648:Child; D002758:Cholangiography; D002760:Cholangiopancreatography, Endoscopic Retrograde; D015529:Choledochal Cyst / Q000000981:diagnostic imaging* / Q000601:surgery; D003937:Diagnosis, Differential; D004386:Duodenum / Q000601:surgery; D006801:Humans; D008297:Male; D014463:Ultrasonography