Editing Choledochal cyst (section)

== '''Rare congenital condition''' ==

* Usually develops in infancy/childhood
* Often associated with Anomalous Pancreatobiliary duct junction (APBDJ) in 80-90%
** Defined as pancreatic duct joining CBD >15mm proximal to ampulla
** Results in long common channel
** Results in free reflux of pancreatic secretions into the biliary tract, increased biliary pressures, inflammatory changes in biliary epithelium
** This may be related to formation of choledochal cysts
* Incidence around 1 in 100,000 (much higher in Asian countries)
* 4:1 more common in women