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通过肿瘤流行病学、肿瘤临床统计学和肿瘤病因的研究,已证明肿瘤与宿主的遗传因素有密切关系。一、从肿瘤家族史看肿瘤遗传:把某种肿瘤病人亲属中的癌发病率同相应对照组中的发病率或基于普查而得出的预期发病率进行比较,重要器官的常见肿瘤表现出遗传倾向。1.胃癌:通过流行病学的调查,发现胃癌发病率的高低和不同种族有密切关系。如移居于美国西部及夏威夷的日本侨民其胃癌的发病率远比当地的其他人种为高。在印尼的中国侨民的胃癌发生率也较土著印尼人的发病率高。有人对癌症患者家属、家庭以及挛生子
Through tumor epidemiology, tumor clinical statistics and tumor etiology studies, it has been demonstrated that tumors are closely related to the genetic factors of the host. First, to look at the tumor genetics from the family history of tumors: to compare the incidence of cancer in the relatives of certain cancer patients with the incidence rate in the corresponding control group or the expected incidence rate based on the census. The common tumors in important organs show a heredity. tendency. 1. Gastric cancer: Through epidemiological investigation, it was found that the incidence of gastric cancer is closely related to different races. For example, the incidence of gastric cancer in Japanese expatriates living in the western United States and Hawaii is much higher than that of other local people. The incidence of gastric cancer among Chinese expatriates in Indonesia is also higher than that of indigenous Indonesians. Someone has cancer family, family and twins