论文部分内容阅读
胰腺癌的确切病因和机理迄今仍不清楚。流行病学调查及前瞻性研究提示胰腺癌是由多种病因因素共同作用的结果。兹复习有关文献,对本病的病因及发病机理简要介绍如下。烟草:多数前瞻性及回顾性研究均表明吸烟与胰腺癌的发病密切有关,但吸烟斗者发病率无明显增加。吸烟者胰腺癌的发病率比不吸烟者高2～2.5倍,且发病的平均年龄提前10或15年。每天吸烟10或15支以上者发生胰腺癌的危险性增加3倍。吸烟过程产生的烟雾中含有的各种有害成分可能是一种比环
The exact etiology and mechanism of pancreatic cancer have so far been unclear. Epidemiological investigations and prospective studies suggest that pancreatic cancer is the result of a combination of etiological factors. I will review the relevant literature and briefly introduce the etiology and pathogenesis of the disease. Tobacco: Most prospective and retrospective studies have shown that smoking is closely related to the onset of pancreatic cancer, but there is no significant increase in the incidence of tobacco smokers. The incidence of pancreatic cancer in smokers was 2 to 2.5 times higher than non-smokers, and the average age of onset was 10 or 15 years earlier. Smoking 10 or more cigarettes per day has a threefold increase in the risk of developing pancreatic cancer. Various harmful components contained in the smoke from the smoking process may be a kind of loop