1. Symptom 1: blood in stool, early lesions of bowel cancer are limited to mucous membrane, which can be asymptomatic, or only have changes in bowel habit. When the tumor grows to a certain degree, blood in stool can appear, the blood color is mostly light and dark, adhering to the surface of stool. Fecal microscopy can find red blood cells, and fecal occult blood test is positive. For patients with bloody stools or persistently positive fecal occult blood, the possibility of colorectal tumor should be considered firstly and further relevant examination should be done;
2. Symptom 2: mucus and pus-blood stools, when the cancer ruptures, the stools are often with bright-red or dark-red blood and mucus and feces and blood are mixed together;
3. Symptom 3: change of defecation habit, during the period of onset of the disease, the number of stools of patients with bowel cancer will change accordingly, and most of the time, the number of times will be changed accordingly, and most of the time, the number of times will be changed. During the onset of bowel cancer, the number of bowel movements will change accordingly, and most of them will increase, from once a day to two or three times, and there is a feeling of incomplete bowel movements after each bowel movement.
Precautions
Bowel cancer patients should avoid eating smoky and cold foods in their daily diet after they have a clear understanding of the initial symptoms of bowel cancer.