In case of choledochal cyst, bile diversion into the small intestine is not done because of the risk of -

Ans is 'c' i.e. Recurrent Cholangitis Schwaz writes ? "The cyst wall is composed of fibrous tissue and is devoid of mucosal lining. As a result, the treatment of choledochal cyst is surgical excision followed by biliary enteric reconstruction. There is no role for internal drainage by cystenterostomy, which leaves the cyst wall intact and leads to the inevitable development of cholangitis. Rarely, choledachal cyst can lead to the development of biliary tract malignancy. This provides a fuher rationale for complete cyst excision." Thus we infer that a bypass procedure will inevitably lead to strictures and recurrent cholangitis. This can be prevented by complete excision of cyst and reconstruction procedure. Though by complete excision we also prevent malignancy (which may occur in future), but this is an added advantage