Pathology and clinical _'s general knowledge of rectal cancer

Pathology and clinical _'s general knowledge of rectal cancer
Rectal cancer (rectal cancer) Common the intersection of malignant tumour and morbidity it second only to stomaches and cancer of the esophagus to be common some most, large intestine of cancer in the gastrointestinal tract ' Accounts for about 6 5%) Overwhelming majority genetic patient getting under the age of 30 to account for 15% man meet men and women's ratio more over 40 2 -3 :1 , Rectal cancer is the ath life style disease. At present, it jumping occupy the second place in the cancer billboards, so diet and life style, it is the seed of trouble of cancer. Because cause is similar to symptom, rectal cancer is usually mentioned with quilt of cancer of colon.
Not yet till at present ten is clearly demarcated, but the majority thinks that relates to food or heredity. Over the recent more than ten years, the research from every side, prove the absorption of the acid food is the arch-criminal of cancer, cancer is the representatives of the acid physique. In food, the uptake amount of meat, protein, fat improves much, the rectum of large intestine has the tendency to obviously increase, there are quite a few patients who gets intestinal cancer in one's thirties.
1.Chronic inflammation of the rectum: Chronic ulcer colitis, granulation that chronic snail fever form to marry the emergence of rectal cancer, there are direct relations. The longer its course of disease is, the higher the possibility to form rectal cancer happens, the incidence that the ulcer colitis patient of ill more than 20 years forms rectal cancer is about 20- 40%.
2.Adenoma canceration 3 of rectum. The diet and carcinogen: Study to reveal the emergence which forms rectal cancer has obvious contacts with economic situation, diet structure in epidemiology. Animal fat and protein are tall in proportion, obviously high in region and colony's morbidity that the cellulose content is low in the developed area, diet. Diet structure and relation that form among rectal cancer take place precise mechanism still totally clear, it is generally acknowledged may catabolite and because of the low cellulose diet state with the intersection of supersession and product, bacterium of animal fat, the intestines wriggle and slow down, the toxin of the intestine absorbs the factor of increasing etc. and has something to do.
4.Inherent cause: Except the family polyp disease or knot rectal cancer patient causing it that ulcer colitis cancerates, among other rectal cancer patients of the knot, nearly 5- 10% of the patients have obvious tumour history of family, it is not the ill rectal cancer of knot (Hereditary Nonpolyposis Colorectal Cancer, HNPCC) of family's polyp to be referred to as heredity ,Also called Lynch syndrome. Embodied in:
(1) Have three people more than suffer from, form rectal cancer in the kinsfolks, among them two people more than the same generation; (2) Two generations of close per persons have illness coming on at least; (3) Among them there is a person at least that is to diagnose as that form rectal cancer 50 years old ago.
Rectal cancer clinical manifestation ( One) It defecate it used to on changing, blood, suppuration blood, in serious, constipation, diarrhoea,etc. after being worried ( Two) Stool attenuate, have, defecate, obstruct becoming thin even evil liquid quality later period gradually ' Three) The rectum means examining: It is Master's supervisor that diagnose necessity of rectal cancer check step invite the intersection of rectal cancer and patient of 80 can mean, examine, graduate, find, can touch quality to be hard and unsmooth through natural rectum when visit Flat bag piece; Can touch the intersection of intestines and of narrow the intersection of bag and piece, mean suit see containing excrement dirty the intersection of suppuration and blood while being fixed later period ' Four) The proctoscope is examined: Can detect the shape position of tumour and can fetch and get involved to organize malingering to examine directly ' Five) Obstruct symptom obstruct for rectum cancerous swelling, have, defecate difficulty, the intersection of excrement and little close, the intersection of companion and abdominal pain, abdominal distension. Can be seen intestines type and have intestines chirp overbearing and better, etc very person.
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