The first thing you need to do is to have a colonoscopy before hemorrhoid surgery and find out about colon cancer. 58-year-old Master Wang has always had the old problem of hemorrhoids and usually has blood in his stool. Recently, the blood in the stool became more serious, and Master Wang finally couldn’t drag it out anymore and came to Shenyang Anorectal Hospital to have hemorrhoid surgery. The day before the surgery, the doctor arranged a colonoscopy for Master Wang, and the colonoscope was inserted into the anus 10 cm and found an ulcerated purple-red mass, which was confirmed by pathology to be rectal cancer! This diagnosis was beyond the expectation of Master Wang and his family. In fact, for anorectal doctors, cases like Master Wang are very common. Mistakenly thinking that it is hemorrhoids and not paying enough attention to the symptoms such as blood in stool lead to the concealment of colorectal cancer and even the late stage once found. Kang Liqiang, chief physician of Shenyang Anorectal Hospital, introduced that in recent years, with the accelerated pace of people’s life, the change of diet structure and the large intake of high-fat and high-protein diet, the incidence of colorectal cancer has been increasing year by year. If you find symptoms such as blood in stool, you must have a colonoscopy to make a clear diagnosis. 1.Blood in stool is not always hemorrhoids. Blood in stool in hemorrhoids is bright red, blood stained by hand paper, dripping or jet-like bleeding after stool; blood in stool caused by colorectal cancer is mostly pink or dark red. The blood in the stool caused by hemorrhoids and dysenteric enteritis is sometimes not easily distinguished from the blood in the stool caused by colorectal tumors, and should be clearly diagnosed through colonoscopy and other methods. There are still some cases because the lips of the mouth, cheek mucosa, fingers, palms, toes appear black or brown-black patches, patients often go to dentistry, dermatology, after the doctor recommended further examination found to have gastrointestinal polyps, this disease is called melanin spots – gastrointestinal multiple polyp syndrome. 2, high-risk groups should do colonoscopy early Adenomatous polyps of the colon are important precancerous lesions, most of which have no obvious symptoms, so many patients are often accidentally detected when they do colonoscopy for various reasons. Colon polyps can occur in all types of people, from infants to the elderly. The following groups of people are more likely to suffer from colorectal polyps – people with a family history of colorectal cancer, colorectal polyps, genetics is an important factor in the development of colorectal polyps, clinical work can be seen in a family with multiple members suffering from colorectal polyps; long-term consumption of fried, smoked food; long-term living in polyp-prone areas, such as coastal areas, economic developed areas, etc.; long-term high-fat, high animal protein and low-fiber diet, addicted to fried food; age older than 50 years old, with related diseases, such as colitis, etc. It is recommended that the above-mentioned people have regular colonoscopy. 3, removal of polyps need to be pathologically confirmed Polyps, if they have formed, should be removed in a timely manner. As long as the polyps are cut off in time, the incidence of colorectal cancer can be reduced by 70%-90%. Colonic adenomatous polyps are not a minor disease, they are recognized as pre-cancerous lesions and are highly susceptible to cancer, especially those large polyps with wide base and no tip, which have a high possibility of cancer. Some of the colon polyps close to the anus can come out of the anus when defecating, then come to the hospital, the doctor can directly observe the size and shape of the polyps, the discovery of colon polyps to do further examination to exclude the existence of multiple polyps, electronic colonoscopy can not only observe the microscopic lesions of the colon mucosa under direct vision, but also determine the nature of the lesions through tissue biopsy, so it is the most important means to detect and confirm the diagnosis of colorectal Therefore, it is the most important means to detect and confirm the diagnosis of colorectal polyps. The polyps found by e-colonoscopy can be biopsied to understand the nature and type of polyps and whether there is cancer. It should be noted that because of the limited size of the specimen to be clamped and sent for examination, the lesion at the clamped biopsy does not fully represent the whole picture of the lesion, and the absence of cancer at the biopsy does not confirm the absence of cancer elsewhere in the adenoma. Therefore, the degree of atypical hyperplasia of adenoma and the absence of cancer often need to remove the whole tumor and carefully examine it by section to be sure. At present, with the continuous development of colon endoscopic treatment technology, endoscopic removal of colon polyps has become quite common and mature, and most of the colon polyps can be removed under colon endoscopy, eliminating the pain of dissection and having the same therapeutic effect as open surgery, and the hospital stay is short, the postoperative recovery is fast, and the treatment cost is low. According to the shape, size, number and presence of the polyp, different methods can be used for treatment. For example, high-frequency electrocoagulation capsulectomy method: mainly for large polyps with tissues; thermal biopsy forceps removal method is mainly used for single small polyps; mucosal resection method is mainly used for flat polyps without tissues or early cancer patients; block and stage removal method is suitable for larger polyps. If the number of polyps is large and if they cannot be removed all at once, the patient is required to undergo regular fractionated electrosurgery. Surgical treatment is required for those who cannot be removed endoscopically.