Dangerous crowd's _ general knowledge of rectal cancer

Dangerous crowd's _ general knowledge of rectal cancer
Large intestine cancer means and takes place in the caecum, promotes colon, transverse colon, descending colon, second form colon, cancer and tumour of the rectum, it is a kind of most common malignant tumour, ranks the third in various malignant tumour. The morbidity of large intestine cancer of our country presents and shows the ascendant trend in recent years, the morbidity increases by 2- 3 times within 20 years in Shanghai alone. What especially merits attention is, the proportion that young people suffer from large intestine cancer is increasing. Though the doctors all believe the increase of large intestine cancer relate to increase of fat content in the diet, but its precise reason is not yet clear. At present, what the medical circle has already known is that some diseases have been in close relation with large intestine cancer, suffer from the persons of these diseases high-risk group known as large intestine cancer. So, understand these diseases and apt to suffer from the crowd in term of preventing and diagnosing in early days, it is very beneficial.
The polyp of large intestine: The polyp is a kind of superfluous living beings that grows from enteric mucous membrane, the size, shape, number, position are different. There are more middle-aged and elderly people over 40 in the patient, increasing with the increase polyp of age too, depend on the colon mirror can make a definite diagnosis of this disease. Polyp study carefully his source divide adenoma nature and hyperplasia into mainly ' Inflammation) Two big classes of sex. Known adenoma polyp, person who occur frequently and diameter greater than centimetre of adenoma canceration danger relatively loud polyps especially, pathological change, must excise clean before cancer known as large intestine cancer; Even if already radically treated the patient of the adenoma polyp, should reexamined regularly, in order to observe whether to recur.
Ulcer colitis: Not colitis generally talked about, but the suppuration blood by breaking out repeatedly is a main symptom, the colon mirror can see to examine " Aphtha " Colitis of kind of ulcer. The probability of the canceration takes place in ulcer colitis 5- 10 times higher than normal people, especially have illness coming on when being teenage, and pathological change in extensive range, course of disease in 5 year person of the above in activity, pathological change, the canceration danger is greater. What merits attention is, the ulcer colitis patient of our country obviously increases in recent years, therefore the cancer patient initiating it is increasing.
Japan's snail fever: This disease is prevailing in the southern areas to the south of the Changjiang River of our country. The worm's ovum of the blood fluke exists for a long time to stimulate the mucous membrane of intestines and cause the canceration in the mucous membrane of large intestine. This disease with having in the severely afflicated area of snail fever area compares, the detection rate of large intestine cancer should be 12.3 times higher.
The person who accepts radiotherapy of pelvis: Uterus, ovarian cancer patient should often accept radiotherapy, the incidence of its rectal cancer is 4 times higher than the ordinary person, patient that especially year for the radiotherapy 10 later, the radiotherapy dosage is older.
The persons who suffered from large intestine cancer in the past: The second takes place to send the cooking stove of a cancer (not recur) of large intestine originally again after treating the first cancer cooking stove to about 2%- 11% of the large intestine cancer patients ,This is known as heterochronism occuring frequently. Thus, because patients mustn't already treated and slept without any anxiety, yes reexamine regularly. Accept ovarian cancer, the intersection of breast cancer and operation in the past, implement ureter second the intersection of form and colon people of anastomosis large intestine cancer high to take place crowd too.
The kinsfolks of the cancer patient of large intestine: The incidence of the large intestine cancer of the person who has family's history of large intestine cancer is 3 times higher than the person who doesn't have family's history, besides inherent cause, may relate to the same eating habit.
Other: The gallbladder excises the postoperative patient, the identical and postoperative patient of small intestine, the workers of processing industry of asbestos and textile industry are the high-risk group.
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