1, blood in the stool This is easily confused with hemorrhoids. However, XI Zuowu said that blood in the stool caused by hemorrhoids is usually fresh blood and even spurts out. However, the color of the blood in the stool caused by hemorrhoids is usually bright red, and the blood and stool are distinctly separate. However, the blood in stool caused by rectal cancer is usually dark red blood, mixed with stool, and some people can even see pus and blood stool, or even mucus discharge, which is caused by tumor necrosis and ulceration. 2. The amount of bowel movement is very little each time, and the number of bowel movement is many. It reaches 10 times or even dozens of times per day. Because the tumor grows in the intestine, it will stimulate the intestine and cause intestinal dysfunction, resulting in a large increase in the number of stools. Usually, the tumor will want to defecate again soon after it has finished defecating, or even want to squat to defecate again just after lifting the pants, and defecate at least 10 times a day. At the end of the stool, because there is no more feces in the body, so will pull out a small amount of blood and mucus, but still have a strong desire to stool. 3. Deformation of stool The stool often has grooves or becomes thin, which is due to the deformation of stool in the intestinal tract caused by the tumor squeezing. The thickness of stool is related to the size of the tumor. However, sometimes hemorrhoids can also cause thin stools, how to distinguish this? Xi Zuowu said, “The thinning caused by hemorrhoids is generally a uniform thinning of the stool as a whole, while the thinning caused by tumors is not uniform in form and often sticky with pus and blood.” 4. appearing morning diarrhea As the tumor and tumor secretions stimulate the intestinal tract, it will cause patients to often wake up in the morning with diarrhea, or even directly awakened by the feeling of abdominal pain.