(中文為自動翻譯)
是否所有癌症遺傳嗎？
號癌症是不是在這個詞的真正意義上的真正的遺傳性。遺傳性意味著你一定會得到一個特徵，如眼睛的顏色或你從父母繼承的基因疾病。癌症的病因並不這麼簡單。癌症不是由僅僅一個基因引起的。癌症通常是老年人的疾病，當發生在小區的幾個基因改變大多數癌症發生。這就是所謂的零星癌症。
但有些人繼承故障（突變）基因，使他們開發一個特定癌症比正常人高的機會。例如，誰擁有一個錯誤的BRCA1基因的婦女有患癌症在他們的生活中的一個80％的機會。但是，這仍然意味著，1〜5名婦女與這種基因的改變會不會得癌症。高達1中20（5％）的癌症是由一種遺傳缺陷基因引起的。
這可能是由一種遺傳缺陷基因引起的與癌症可能似乎在家族中包括
乳腺癌
卵巢癌
腸癌
子宮癌
視網膜母細胞瘤
霍奇金淋巴瘤
非霍奇金淋巴瘤
黑色素瘤
前列腺癌
http://www.cancerresearchuk.org/about-cancer/cancers-in-general/cancer-questions/are-all-cancers-hereditary
Are all cancers hereditary?
No. Cancer is not really hereditary in the true sense of the word. Hereditary means that you definitely get a trait such as eye colour or an illness from the genes you inherit from your parents. The cause of cancer is not as simple as that. Cancers are not caused by just one gene. Cancer is usually an illness of older people and most cancers occur when several genetic changes occur in a cell. This is called sporadic cancer.
But some people inherit faulty (mutated) genes which make their chance of developing a particular cancer higher than normal. For example, women who have a faulty BRCA1 gene have an 80% chance of getting cancer at some point in their lives. But this still means that 1 in 5 women with this gene change will not get cancer. Up to 1 in 20 (5%) cancers are caused by an inherited faulty gene.
Cancers that may be caused by an inherited faulty gene and may seem to run in families include
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