The incidence of colorectal cancer (rectal cancer, colon cancer) in China has a significant increasing trend, and has even surpassed liver cancer, stomach cancer and malignant tumors. Clinically, many patients ignore the early signals of colorectal cancer and do not seek medical treatment in time, data show that the survival rate of colorectal cancer can be over 90% in the first 5 years of early detection. If you have the following symptoms, you need to be examined in time for early detection and treatment. Early symptoms of colorectal cancer 1. Blood in stool: Many patients who have blood in stool think that it is caused by small hemorrhoids and do not pay attention to it. 2.Diarrhea: Continuous change of stool habit, including sudden constipation, diarrhea or alternation of both, and significant increase of stool frequency are some of the symptoms of rectal cancer. 3.Black stool: In recent years, influenced by the trend of detoxification and skin care, many people abuse laxatives, thus causing a significant increase in colon black stool disease, in fact, the common interpretation is that the colon becomes black, the disease is accompanied by adenomatous polyps and intestinal cancer rate of up to 22%-55%. Colorectal cancer early detection cure rate can reach 90% In 2009 epidemiological data, there were about 1.2 million new cases of colorectal cancer and 630,000 deaths worldwide. Moreover, the age of onset is significantly earlier, averaging around 45 years old, and many of them are young and middle-aged people aged 30 to 40, 12 to 18 years earlier than that of western countries. With the improvement of the living standard of Chinese people, poor living habits such as obesity, less movement, smoking, heavy alcohol consumption, excessive intake of red meat or processed meat products, and insufficient intake of fruits and vegetables all increase the risk of colorectal cancer accordingly. Therefore, in general, urban populations are more likely to develop colorectal cancer than rural populations, and men are more likely to develop colorectal cancer than women (about 1.5:1). However, although the incidence of colorectal cancer is increasing, it can still be cured if detected early. According to statistics, the 5-year survival rate for colorectal cancer in situ (very early stage) is 94.1%, and for localized cancer 84.6%, but if liver metastasis occurs, the 5-year survival rate drops to 5.7%. Colorectal cancer can be detected basically through rectal examination and electronic colonoscopy, and the accuracy rate is over 80%. Blood in stool to detect the possibility of bowel cancer In daily life, hemorrhoids and rectal cancer may have some identical or similar symptoms (such as blood in stool), making some patients let down their own vigilance. Hemorrhoids can occur in people of any age, while patients with rectal cancer tend to be middle-aged or elderly. Patients with hemorrhoids have blood in their stool, which is due to scraping the affected area during defecation, and most of the blood drips down as the stool is expelled, so it does not mix with the stool and even less mucus is present. In contrast, the stools of rectal cancer patients are often mixed with blood, mucus and pus, and the stool habits may change significantly. There are many aspects of bowel habits, such as the bowel movement is usually dry, but suddenly becomes thin or dry in the past few days; some people have a change in the frequency of bowel movement, from once a day to two or three times a day, or vice versa. In short, if you have abdominal discomfort, pain, localized lumps, a feeling of urgency, and changes in the nature and shape of stool (from dry to thin, with mucus and blood, or unshaped, thin and flattened stool), i.e., if your bowel movements are different from the usual pattern, you should go to the hospital for an early specialist examination.