The third most frequent malignancy in both men and women is colon cancer. If caught early, it is also one of the most curable malignancies. There are four possible colon cancer symptoms that everyone has to be aware of. A change in bowel habits is the primary sign. Constipation, diarrhea, or a change in stool consistency are a few examples. The second symptom is blood in your stool, which may be visible or invisible. The third symptom is abdominal discomfort, which can range from dull aches to cramping.