Large intestine cancerous pathology common sense

[Overview]
The malignant tumor with proud bowel epithelial and genetic mucous membrane calls large intestine cancer. It is the commonnest enteron one of malignant tumor. Clinical and common blood or mucous pus blood, defecate appearance or habit produce a change, bellyacke, abdomen is wrapped piece etc. Produce place to differ according to its, its are clinical expression often has its specialty each.
Cancer has large intestine remove disease to hide, the clinical performance that inchoate Chang Moming shows, illness progress is slower, excel of long-dated curative effect is other enteron is malign tumor, prognostic and opposite better; But cancerous incidence of a disease has large intestine high ascendant trend of in successive years.
Large intestine cancer is western country (Western Europe, North America) the commonnest malignant tumor, our country reachs the influence of a lot of element such as habits and customs as people diet structure in recent years, the tendency that cancerous incidence of a disease has large intestine to rise apparently. The district trait that cancerous incidence of a disease and mortality Yi Youming show our country large intestine, foreland large intestine is reached downstream in the Yangtse River cancer comes on reach mortality is tall, inland is saved each come on reach mortality is inferior, the distributinging trend inside contemporaneity bound limits also more consistent, namely economy developeds economy of area prep above is underdeveloped area, cancerous mortality is Shanghai large intestine 11. 0 ／ 100 thousand, and Gansu Province is 1.8 ／ only 100 thousand. In distributing phyleticly go up to be gone to already think Caucasian likelihood suffers from large intestine more easily cancer, but the epidemiology data analysis from inside immigrant, this kind of racial diversity is not remarkable. In vitriol of fir of American the name of a river in Shaanxi and Henan provinces, male of cancer of white man colon is 36.6 ／ 100 thousand, the black is 23. 7 ／ 100 thousand, the Chinese is 24. 7 ／ 100 thousand, japanese is 29.8 ／ 100 thousand; Female white man is 23. 7 ／ 100 thousand, the black is 27. 6 ／ 100 thousand, the Chinese is 8. 0 ／ 100 thousand, japanese is 20. 8 ／ 100 thousand. Accordingly, outside be genetic element except the main reason of partial colon cancer, likelihood dietary habit and structure are large intestine more important inducement of cancer.
Cancer belongs to large intestine the doctor of traditional Chinese medicine learns " accumulation " , " alvine wind " , " 癥 a lump in the abdomen " , " dirty knot " , " next dysentery " , " the naevus that lock up anus " , " dirty poison " wait for a category.

[The pathogeny learns]
Cancerous pathogeny still is not clear about large intestine. Think commonly, large intestine cancer is heredity and environmental element between the result of complex interaction. To different case of illness, above the action with two kinds of corresponding elements each are not identical. If disease of polyp of sex of familial sex tumour and transmissibility are not polypous disease,genetic element is asked for integratedly in affirmatory already heredity main effect has in cancer of sexual knot rectum. The colonic cancer that send out is environmental element long-term effect produces gene noxiousness to change and cause cancer finally. In these two kinds of types tumor does not produce suddenly, the pathological changes that can identify by colonic mucous membrane however (if be not typical hyperplasia, adenoma) ceaseless development, evolve and come.
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