The main symptoms of left-sided colon cancer are change of bowel habit, intestinal obstruction and blood in stool.
1. Change of bowel habit, under the constant stimulation of tumor in the early stage of left colon cancer patients, there will be increased frequency of bowel movement and constipation, of which the former is the most common, and some patients will have both situations alternately.
2. Intestinal obstruction, after the tumor volume in the lesion area keeps increasing, the intestinal lumen will become narrow, and patients with serious situation will have intestinal obstruction, accompanied by abdominal pain, abdominal distension and stopping of exhaust and other manifestations.
3. Stool with blood, tumor ulceration and bleeding will cause dark red blood stool, mucus blood stool and so on.
Patients with the above symptoms are recommended to consult the doctor in time, complete the examination, make a clear diagnosis, and take active treatment.