The right colon is spacious, and cancers of the right colon can grow to large sizes before they cause any abdominal symptoms.

Local colon cancer symptoms affect your bathroom habits and the colon itself. Some of the more common local symptoms of colon cancer include:

1. Dark red blood or bright red in your stools
2. Changes in your bowel habits
3. Constipation or difficulty having a bowel movement or straining to have a bowel movement
4. Irritable bowel syndrome
5. Diarrhea
6. Intermittent constipation
7. Ulcerative colitis, Crohn’s disease
8. Stools that are thinner than normal or feeling as if you cannot empty your bowels completely
9. Pelvic pain
10. Abdominal discomfort, frequent gas pains, bloating, or cramps

If you feel any of these at least for two weeks or more, better to call your doctor to check your concerns and arrange for tests to get to make sure these are colon cancer symptoms or not.