Methods: Intra-operative cholangiogram, pancreatic histology and ultrastructure examination, serum and bile amylase measurements were carried out on 25 children with choledochal cysts.

• 方法：对25例胆总管囊肿患儿进行术中胆道造影、胰腺组织学、超微结构检查以及血清、胆汁淀粉酶测定。