The occurrence reason of the tumor

The problem that how takes place to the tumor, although carried on a great deal of research to up make, backlog abundant data, a lot of basic problems haven't solved, over-emphasizes ten more cancers swollen aspect to the research of tumor currently and generally think that the occurrence of tumor(mainly cancer) mainly has something to do with following factor:

(A)some chemistry materials of the chemistry cancer-causing factor machine body and one fixed amount over a long period of time or again and again after the contact, can cause tumor.These chemistry materials are called a cancer-causing factor.Familiarly there is coal tar, thick paraffin oil, fragrant clan An, second nitric An and accidentally nitrogen dyestuff etc..

(Two)the physical cancer-causing factor include hot, project line machine stimulate etc. factor, such as many burns and wound(temple neck wound etc.) cause of the organization increase to living, sometimes can form a cancer.Again if after being subjected to emanation line to hurt, later period's taking place a leukemia ratio has never been subjected to emanation line to hurt obviously increase.

(Three)the living creature cancer-causing factor include virus and parasite etc..Tests in the animal in confirm that the virus can cause animal tumor;(like nipple-like in shape lump etc. of chicken lump, rabbit)The virus is the reason of the human body tumor, the research in recent years also obtained important achievement.

(Four)the occurrence of the machine influence of the body upon the tumor tumor in addition to outside cancer-causing factor function outside.Some animal experiment material and human body, clinical and pathologic data expresses, the internal factors of machine body such as nerve, endocrine system appearance and machine body to the immunity reaction of the tumor etc. the factor also have important influence to the occurrence of the tumor.

(Five)expect before the cancer although the pathological changes some pathological changeses isn't a cancer, but have the change as cancerous tendency, can become cancerous occurrence foundation, these conditions are called "expect a pathological changes before the cancer".Familiar of expect the pathological changes has following few kinds before the cancer:

1, the mammary glands bag the little leaf increase to living

2, glue the film white spot disease 3, chronic ulcerate

4, the large intestine deliver sex polyp disease more

5, cirrhosis

In addition, clinical ossification tumor seen sufferer, often have the history of external injury, think the Hun appearance of disease that harms an empress.May become the inducement of tumor occurrence.

The machine body says these factor functions in the Bu under, how does the normal organization change into tumor to organize?Someone thinks to is the relation of the chronic incitement.Normal organization through chronic stimulate over a long period of time, partial cell happen to increase to living, and then again change into tumor cell;Someone thinks normal cell at cancer-causing factor function under, the cell metabolizes occurrence the change is quantity first to change, after deliver cow quality to change but change into tumor cell;And someone thinks that some tumors(such as Ji foetus lump) are the embryo cells that is remained in the body by the machine under the above-mentioned factor function and develop since then.In fine, these return the Ji need a thorough research.Then can enter-tread is clarified.