The family of hepatocarcinoma gathers and is inclined to _'s general knowledge

The family of hepatocarcinoma gathers and is inclined to _'s general knowledge
Modern medical science think 90% cause of disease of cancer the intersection of external cause and, heredity weight not accounted for minimum in cause of disease of tumour. Divided by close cancer of colon that disease develops from the occuring frequently interest of large intestine, skin carcinoma that leather disease develops into is substandard that the colouring dries, other cancers are thought not to have clear relation with the inherent cause more. Having families that several people suffered from hepatocarcinoma at the same time or successively as to those, due to ample and common living condition that perhaps, for example it is much more important than the inherent cause to be exposed to the factor of a certain carcinogen together. In other words, this can't be called heredity, this can only be thought to be that a kind of family gathers inclination. The members who has ever happened in one in patient's family of hepatocarcinoma, perhaps should watch out for this disease.
Why does hepatocarcinoma is there a kind of family to assemble and is inclined to? Most scholars think at present:
1,The spreading vertically of B-mode hepatitis virus. Mother infected and become the long-term person who carries virus by hepatitis B and virus, can pass the virus to the neonate after or gives a birth at the time of the childbirthing. Because the neonatal immunological function has not been sound yet, can't remove the virus and form and infect continuously effectively, so that chronic hepatitis, liver cirrhosis take place, develop into hepatocarcinoma finally.
2,The level of the B-mode hepatitis virus spreads. Hepatitis kinsfolks of patient keep in touch extremely close, have first infection hepatitis B and virus, very easy to bring disaster to other people unconsciously.
3,The eating habit, life style,etc. between whole family are basically the same too, the everybody's chance to exposed to the carcinogenic factor is basically equal too.
Hepatocarcinoma can not be hereditary, but why often many people suffer from hepatocarcinoma in whole family?
The medical circle proposes one to this " Attack the theory twice " . Its basic concept is, any cancer is that the result of mutation of twice takes place in the gene of cells. It was not family cancer patient that was distributed, these two changes both take place after being born in. And the cancer patient prone to family, before mother is pregnant, have already been attacked by the carcinogenic factor. Internal cell own to have one kind apt to take place change of cancer when they born, so long as suffered a blow of the carcinogenic factor after being born in, cancer may take place, so the chance to suffer from cancer is higher than common people. This is famous " Attack the theory twice " .
So, has had the hepatocarcinoma patient's families already, it is unnecessary for other members to consider the heredity of hepatocarcinoma too much, don't influence children's marriage question still more. However, should pay attention to the following several points:
1,Strengthen the prevention of hepatitis. Including paying attention to the personal hygiene: Avoid hepatitis disease goes in by the mouth; Popularize and inoculate vaccine of hepatitis B, especially the neonate given birth to of person who carries virus of hepatitis B should inoculate vaccine of hepatitis B even more.
2,Pay attention to dietetic hygiene. Do not eat the food going mouldy, improve the source of water, does not get drunk, not smoke etc..
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