众所周知,有不少种癌症具有遗传倾向性。据科学研究发现,某些特殊人群对于某些癌症确实有易感性,癌症患者第二代发生癌症的危险比一般人高4倍。如在一些家族中很少发现癌症患者,而在另一些家族中却有不少人患癌,甚至是患同一种癌。因此在流行病学上有“癌家族”、“家族性癌”、“遗传倾向性癌”等等的概念。科学研究证实,这是因为某些癌症患者患癌后,可能造成这一代的某些基因缺陷,或是因遗传、先天、生活环境等因素,造成某些家族对某些癌症较为易感。如食管癌、胃癌、肝癌、肺癌、乳腺癌、子宫内膜癌、前列 As we all know, there are many types of cancer that have genetic predisposition. According to scientific research, certain special populations are indeed susceptible to certain types of cancer, and the risk of cancer in the second generation of cancer patients is four times higher than that of ordinary people. For example, cancer patients are rarely found in some families, but many people in other families have cancer, even the same cancer. Therefore, epidemiology has the concepts of “cancer family”, “familial cancer”, “genetic predisposition cancer”, and the like. Scientific research confirms that this is because some cancer patients may have certain genetic defects of this generation after they have cancer, or some families may be more susceptible to certain cancers due to genetic, congenital, living conditions and other factors. Such as esophageal cancer, stomach cancer, liver cancer, lung cancer, breast cancer, endometrial cancer, front row