Local colon cancer sign or symptoms affect your bathroom habits and the colon itself. Changes in your bowel habits, just like bowel movements that are eigther more or less frequent than normal
Intermittent (alternating) constipation and diarrhea
Bright red or dark red blood in your stools or black, dark colored, "tarry" stools
Abdominal (midsection) uncomfort, bloating, gas pains, or cramps
In case if you experience any of these for two or more weeks, call your doctor quickly to discuss your issue and arrange for tests to get to the bottom of your symptoms.