Colon, rectal cancer is a common cancer in the elderly one, as the special characteristics of the incidence, clinical, is likely to result in misdiagnosis. Now its early performance on the following: Food absorption in the small intestine is to be completed until the food arrived in the colon and rectum, has become excretion of waste. People swallow food, first through the small intestine right colon, and then to the left colon, rectum finally arrived. Food residue to right colon, there are still some liquid was not completely absorbed, then the gut contents of a liquid due to right colon wide, it seldom occurred obstruction. But such tumors often secondary infection and chronic toxic absorption characteristics, therefore, the right colon cancer patients suffering from often low-grade fever, night sweats, malaise, anemia and other symptoms. To the food residue left colon, can not be absorbed completely into the waste, from the liquid into a semi-solid. Left colon lumen due to the narrower, smaller lumen to narrow soon change, it appeared easy abdominal distention, abdominal pain, constipation, and other symptoms of low intestinal obstruction. Rectal the end of the digestive tract, early cancer lesions only in the intestinal mucosa, can be no obvious symptoms. But illness gradually worsened, it can stimulate the local tumor symptoms, manifested as increased frequency of stool from 1-2 times the normal daily increased 3-4 times or more, Buchengxing stool. Anal discomfort, a sense of falling, and sometimes abdominal pain, and sometimes blood in the stool and mucus. Colon rectal cancer will occur in the elderly, young people in recent years has significantly increased the incidence, so when you have stool habits change, we, the reasons for the increase or no mucus, it Nongxue For unknown reasons, the low-grade fever, night sweats , anemia or chronic obstruction, it must be vigilant with colon, rectal cancer. If the symptoms should promptly to the hospital for an examination. In the absence of a clear diagnosis, not long-term on-enteritis, diarrhoea treatment, so as to avoid delay in diagnosis.
