Does colorectal cancer affect bowel movements?

In clinical practice today, colorectal cancer is a malignant tumor with a very high incidence, especially in men over 40 years old, which brings great inconvenience and trouble to their health and life. It is important to detect the disease in time and treat it. Next, let's see if colorectal cancer affects bowel movements?

1. Blood in the stool: The time and nature of the manifestation vary depending on the location of the disease. Blood in the stool is often the first symptom of rectal cancer patients. In the early stage, the amount is very small, and there are often fresh blood stains on one side of the stool.
2. Changes in bowel habits: During the onset of the disease, the patient's bowel habits also undergo great changes, such as changes in bowel movement time and frequency, as well as constipation or unexplained diarrhea. Patients with rectal cancer may have more bowel movements, but each time they defecate, they may not have much stool, or even no stool at all, but only some mucus and blood, and feel that the bowel movement is not complete.
3. Diarrhea: In clinical practice, some patients may have diarrhea as the first symptom. The number of bowel movements increases every day, and the stools may contain mucus and blood, mucus and pus, or loose stools. There may be a strong feeling of defecation but no stool. This should be distinguished from bacillary dysentery.
4. Abdominal pain: In life, some patients will have dull abdominal pain as the first or prominent symptom, while other patients will show typical abdominal pain of incomplete intestinal obstruction, that is, the pain is paroxysmal colic accompanied by abdominal distension.