Why congenital bile duct cysts easy with gallstones?

Congenital bile duct cysts in patients about 80% with stones. Gallstone formation are due to cystic dilated bile duct cysts or merger exports relatively narrow, resulting in poor drainage of bile, stranded in the cyst bile precipitation, with bile glycoprotein and the cohesiveness of biliary dynamic factors whirlpool campaign These three indispensable link in promoting their stone formation.