According to 2004 statistics of the Department of Health report showed that colorectal cancer mortality accounted for the third place, the annual number of people suffering from up to 7,500 people, in 2004 the number of deaths for 3898 were the total number of cancer deaths 10.72%. With regard to the treatment of colorectal cancer, although there are several new drugs available, but for the transfer of cancer cells has been the late colorectal cancer patients, the survival rate and no significant progress; On the contrary, for the early was diagnosed with colorectal cancer the early stage patients, the 5-year survival rate can reach 85 ~ high 100 percent, so if early screening, early diagnosis, early treatment and thus would be the best policy.
Colorectal cancer caused by the reasons are complex, some genetic factors, some external factors, or both, the interaction of changes within the normal mucosal cells, after a long period of time, evolved into a pre-cancer lesions. Colorectal cancer triggered a number of factors, for example as follows:
A family history:
General unexpected colorectal cancer, in the foreign literature statistics that pointed out that the family members of a family history of cancer than the rate of colorectal cancer than the general public, such as in the family of a first-class pro-(parents or brothers and sisters ) suffering from colorectal cancer, then his own rate for most people two to four times, if the two first-class pro-patients suffering from colorectal cancer, the increased risk of three to six times.
Second, eating and living factors:
Most people ignore such an important factor
1. Food
(1) daily consumption of calories - the daily consumption of fat and calories are two high-risk factor, the incidence of colorectal cancer is about twice the average person.
(2) of meat, fat and protein - eating red meat increases colorectal cancer, fried, grilled food will increase the incidence of six times. High-protein intake and cancer-related, a lot of controversy, but in principle, high-protein intake will accelerate the growth of epidermis.
(3) of the fat part of red meat, is likely to be tumor promoters, the bacteria in the intestines will help promote the metabolism or carcinogenic substances, caused by intestinal bacteria on the surface of endometrial hyperplasia.
(4) fiber - in Africa, the report pointed out that the high fiber diet will reduce the risk of colorectal cancer; in particular, bran, fruits and vegetables. But how in order to prevent the occurrence of colorectal cancer, there are a lot of clinical trials in progress.
(5) fruits and vegetables - most of that protection and resistance to the function of colorectal cancer occurrence, especially students, the Green Cross Section of and vegetables, including the antioxidant vitamins (E, C, B, A) and small molecule chemistry etc..
(6) of calcium - in cell culture, there to protect the function of colorectal cancer occurred.
2. Living habits
Do not exercise, not the activities were considered easy to suffer from colorectal cancer, alcoholism and smoking are also more susceptible to colorectal cancer. According to the report, such as smoking more than 20 boxes each year will increase the intestine polyps, more than 35 boxes of colorectal cancer will increase.
3. Non-steroidal, anti-inflammatory drug
House attributes to prevent the cancerous polyps are now being investigated.
Third, disease syndrome:
1. Familial colorectal polyp disease
Colorectal cancer accounts for 1 percent of patients, patients can have hundreds of thousands of polyps, if not all of the colorectal resection, all patients will be in about 35 years old when the symptoms in the 45-year-old when there are more than 90% of colorectal cancer patients, and in the 50-year-old, will the incidence of 100 percent.
2. Hereditary nonpolyposis colorectal cancer polyps
Colorectal cancer accounts for about 3 percent, about 100 polyps, large number of the right or proximal colon, often occurring in middle-aged. Divided into two categories: the beginning of a more flat polyps, but often become malignant after 43-year-old. The second category is often occurred in the large intestine, in the case of stomach, small intestine, bile duct lose, renal pelvis, ureter, bladder, ovary, pancreas, such as skin or where there is such a genetic factor in general people, life will be 80% of the probability of occurrence of large intestine rectum, 40% of endometrial cancer, and 10% in other parts of the cancer, which is a dominant, 80% of the genetic rate, and DNA repair genes.
3. Familial colorectal cancer
About 20% ~ 30% of colorectal cancer patients, because the genetic family history into the primer, 80% of the patients first discovered polyps of the APC gene mutations.
4. Chronic ulcerative colitis
Is an unexplained inflammation of the intestinal mucosa, and often occurred in the distal colon or rectum, colitis longer, the greater the chances of malignant tumors appear.
5. Has been suffering from colorectal cancer patients
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