结论ERCP可以清晰显示肝外胆管及胆囊管的形态及变异情况，对于胆囊手术术前了解肝外胆道系统形态及变异有重要价值。
Conclusions ERCP can clearly show out the conformation and variation of extrahepatic bile duct and cystic duct and it is of important value before gallbladder operation.
方法对28例手术不可切除的肝外胆道系统肿瘤采用放化疗，其中胆囊癌13例，肝外胆管癌15例。
Methods Form June 1993 to August 2003, 28 unresectable extra-hepatic bile duct carcinoma treated by radiochemotherapy were analyzed. There were 13 gallbladder carcinoma and 15 bile duct carcinoma.
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