胰腺癌是消化系统常见恶性肿瘤之一,在美国每年约有28,000到30,300新发病例,接近每年胰腺癌死亡例数[1]。据2000年上海市统计每10万人中就有6人患胰腺癌,其中5·5人死亡。目前胰腺癌主要是以手术为主的综合治疗,但切除率低,80%以上患者确诊时只能行探查或姑息性手术。因此,胰腺 Pancreatic cancer is one of the most common malignant tumors in the digestive system. About 28,000 to 30,300 new cases occur each year in the United States, which is close to the annual number of pancreatic cancer deaths [1]. According to Shanghai’s statistics in 2000, there were 6 out of every 100,000 people suffering from pancreatic cancer, of whom 5.5 were dead. Currently, pancreatic cancer is mainly based on the operation of the comprehensive treatment, but the resection rate is low, more than 80% of patients diagnosed only probing or palliative surgery. Therefore, the pancreas