Colon cancer often does not have symptoms in the early stages. Most colon cancers begin as polyps, small non-cancerous growths on the colon wall that can grow larger and become cancerous. As polyps or cancers grow, they can bleed or block the intestines.
Symptoms of colon cancer may include:
- Rectal bleeding
- Blood in the stool or toilet after a bowel movement
- Diarrhea or constipation that does not go away
- A change in size or shape of stool
- Discomfort or urge to have a bowel movement when there is no need
- Abdominal pain or a cramping pain in your lower stomach
- Bloating or full feeling
- Change in appetite
- Weight loss without dieting
These symptoms usually do not mean you have colon cancer. But if you notice one or more of them for more than two weeks, see your doctor.
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