How many years can a colonoscopy guarantee safety? Doctor: These high-risk groups of bowel cancer may wish to take a look

In recent years, the incidence of colorectal cancer in China has been increasing, and it has become the largest malignant tumor of the digestive tract. The pathogenesis factors involve aging, intestinal adenomatous polyposis, unhealthy diet and living habits, and genetics.

　　If the disease can be detected in the early stage of polyp and bowel cancer and treated in time, the prognosis of the patient is still very impressive, and even the survival rate within five years can reach about 90% .

　　But unfortunately, the early diagnosis rate of bowel cancer in China is not high. Among the more than 500,000 newly diagnosed bowel cancer patients every year, only a small part is still in the early stage, and more than 70% of the rest have reached the middle and late stage . Colorectal cancer is diagnosed even after severe bowel obstruction and bowel perforation .

　　The fundamental reason why it is difficult to detect colorectal cancer in the early stage is that its symptoms are not typical , which are very similar to ordinary perianal diseases, and even in the early stage of colorectal cancer, there may be no symptoms.

　　Therefore, the clinic has always emphasized the importance of colon cancer screening. The most indispensable inspection item for bowel cancer screening is the legendary "colonoscopy". Related research surveys directly pointed out that regular colonoscopy can reduce the risk of death by 61%.

　　When the word colonoscopy is mentioned, the first thing that comes to mind is shame, pain, and fear of the unknown!

　　The so-called colonoscopy, as the name suggests, is a method of examining the large intestine. Unlike other imaging examinations, colonoscopy is the most direct way to observe the intestines, because the intestines are originally a hollow organ. Whether it is mucosal lesions, or small polyps or tumors , they cannot be detected by ultrasound, CT, etc. method , but colonoscopy is not the same.

　　The colonoscope can directly pass through the patient's anus, and transport the fiber tube with a camera into the large intestine , and perform a 360° inspection of the patient's rectum, colon and other tissues without dead ends. After the abnormality is found, the tissue can also be clamped for pathological biopsy . Whether it is erosion, polyps or cancer , colonoscopy is inevitable.

　　So the question is, who needs a colonoscopy, and a colonoscopy can guarantee a few years of safety?

　　Since colonoscopy is one of the means of cancer prevention screening, that is, high-risk groups need regular colonoscopy. For example, people over the age of 45, with a family history of polyposis, chronic enteritis or intestinal polyps, and a family history of colorectal cancer are all high-risk groups of colorectal cancer, and relevant colonoscopy screening should be carried out regularly. .

　　In addition, if there are abnormal symptoms in the body recently, such as frequent abdominal pain, obvious disorder of bowel habits, and discharge of mixed blood in the stool , it may be a signal of intestinal cancer. Even if it is not related to bowel cancer, it may be the manifestation of chronic ulcerative colitis, Crohn's disease and other diseases. It is necessary to seek medical examination in time.

　　Relevant studies have shown that after colonoscopy, the incidence of colorectal cancer in the next 17 years can be reduced by about 30% . It should be noted that the risk of colorectal cancer does not disappear completely after a colonoscopy. In fact, polyps may also appear later, so science recommends that high-risk groups should have colonoscopy every 5-10 years.

　　Finally, it should be emphasized that if you have ever suffered from adenomatous polyposis, you also need to be vigilant after resection. Because adenomatous polyps have an extremely high recurrence rate, they may recur after removal. Therefore, this group of people should carry out relevant re-examinations on a regular basis according to the doctor's recommendation, so as to avoid the recurrence of polyps without knowing it and leave room for the development of cancer.