What are the early symptoms of rectal cancer?

What are the prophase symptoms of rectal cancer? Rectal cancer lacks symptoms in the early stage, and patients have no obvious abnormal changes. When the mass reaches 1 ~ 2 cm, the intestinal mucosa is stimulated by the foreign body in the mass due to the erosion of the tumor, and the secretion increases, so a small amount of mucus is also discharged during defecation, and most of it adheres to the front end of the stool or outside the stool. With the enlargement of the tumor, the secretion of mucus also increases, and sometimes the intra-abdominal pressure increases due to exhaust or sudden cough, and mucus can flow out of the anus. When the tumor is enlarged, ulcerated or necrotic with infection, there will be obvious rectal irritation symptoms, and the number of defecation and fecal characteristics will change. The frequency of defecation increases, 2 ~ 3 times a day, showing mucus stool, loose stool and mucus bloody stool. It is often misdiagnosed as enteritis, dysentery and ulcerative colitis. However, the symptoms of diarrhea in rectal cancer are not as acute as colitis, and they get better quickly; It is not as typical as dysentery, and the symptoms are serious after acute diarrhea. The symptoms of rectal irritation in rectal cancer are slow and progressive. The irritation symptoms are obvious when complicated with infection, which can be temporarily improved once symptomatic treatment is given. However, those who still have mucus and bloody stools after long-term treatment should be paid enough attention. When patients have the following conditions, they should go to the hospital for detailed examination. What are the prophase symptoms of rectal cancer? 1) defecation is laborious, and the discharged stool is indented, in the form of grooves, flat strips, thin strips, etc. So be sure to have a digital rectal examination. The road to health 2) Abnormal defecation habits, increased defecation times and a small amount of mucus and bloody stools. Those who do not get better after treatment, or those who get better and relapse after treatment, should be diagnosed and treated in time. 3) If there is a history of mucus stool and diarrhea in the past, but the symptoms are mild, the weight suddenly increases, and the frequency and nature of defecation change, the diagnosis should be re-examined. The road to health 4) Constipation and diarrhea with no obvious reason appear alternately. If there is still no improvement after short-term treatment, when no abnormality is found in the stomach by barium fluoroscopy, they should go to the hospital for rectal examination.