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Whether the family of hereditary cancer , which is generally concerned about. now that cancer is not directly hereditary disease , but does have a small number of familial aggregation of cancer of the tendency of some cancer family , his children with cancer Opportunities can be several times larger than the average person . These cancer called hereditary familial cancer. including esophageal cancer , colorectal cancer , breast cancer, gastric cancer , endometrial cancer. The formation of genetic factors ,[link widoczny dla zalogowanych], in medicine known as genetic Susceptibility .
people gradually realized that by observing , lifestyle and exposure to certain carcinogenic substances in the environment may increase the body 's susceptibility to cancer . also found that some patients with congenital immune deficiency , the risk of cancer than Normal is much higher. For the family of cancer, genetic type . Those who are often cancer gene defect is more likely . genetic performance of the most prominent is the retinoblastoma , but the incidence is very low. large number of clinical data confirm , the family has cancer , and future generations are not necessarily cancer .
In addition, in the world, also found a handful of cancer family, about one-third of such members of the family has cancer , and incidence rates of men and women , as many patients The same type of cancer, this certainly hereditary cancer family , but in fact , not many such families .
some patients are not cancer, but cancer can occur , but also genetic,[link widoczny dla zalogowanych], hereditary cancer clinic called the Comprehensive Sign. such as familial polyposis of the colon , polyps, colon cancer can be malignant , such patients must be vigilant and close observation .
cancer genetic problem is very complicated. cancer is not yet completely shrouded in mystery. So , was headed in the cancer , must not cranky ,[link widoczny dla zalogowanych], to maintain a good mood , immunity to improve their own learning and understanding of cancer knowledge and help families build the confidence of cancer .