ABSTRACT
Q1 Possible aetiologic theories of choledochal cyst type I include all of the following except: A Obstruction of the distal common bile duct including stenosis from
biliary inflammation and inspissated bile syndrome. B Disordered recanalisation of the biliary system leading to congeni-
tal weakness of the wall of the common bile duct. C Local ischaemia during fetal hepatobiliary development resulting
in abnormal vascular-ductal interactions. D Abnormal innervation of the distal common bile duct resulting in
functional obstruction and proximal dilatation. E The pancreatic duct joining the common bile duct outside the
ampulla of Vater resulting in reflux of pancreatic juice into common bile duct causing dilatation.
