"Commonly accepted classification is one devised by Todani et al. There are five main types 14,15, with several subtypes some of which can be pathologically unrelated:"
"Ia: cystic dilatation of extrahepatic bile duct (entire)"
"Ic: fusiform dilatation of extrahepatic bile duct (entire)"
"type I: most common, accounting for 80-90% 1 (this type can present in utero)"
"Imaging of the biliary tree can be achieved with ultrasound, CT, direct contrast studies (ERCP, PTC), nuclear medicine examinations or MRI/MRCP."
"Imaging of the biliary tree can be achieved with ultrasound, CT, direct contrast studies (ERCP, PTC), nuclear medicine examinations or MRI/MRCP."
Expected headings
"Associations"
"Complications"
"Choledochal cysts are rare, with an overall incidence of 1:100,000-150,000 live births 15. There is a greater prevalence in East Asia, particularly Japan, where there is an incidence as high as 1:1000, and two-thirds of reported cases occur 11,12. Although they may be discovered at any age, 40-60% are diagnosed before the age of ten years old 1,10. The female-to-male ratio is reported to be between 3:1 and 4:1 10,12."
"Commonly accepted classification is one devised by Todani et al. There are five main types 14,15, with several subtypes some of which can be pathologically unrelated:"