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Symptoms of Colorectal Cancer

It is important to remember that very often there are no symptoms of colorectal cancer until the cancer is advanced. This is why it is important to begin and maintain a program of regular screening as recommended by your doctor. Common symptoms of colorectal cancer include:

  • Change in bowel habits
  • Blood, either bright red, or black and tarry, in the stool
  • Stools that are narrower than usual
  • Diarrhea, constipation, or feeling that the bowel does not empty completely
  • General abdominal discomfort, such as frequent gas pains, bloating, fullness, and/or cramps
  • Unexplained weight loss
  • Constant feeling of fatigue or tiredness

Revision Information

  • Colon and rectal cancer. National Cancer Institute website. Available at: Accessed May 14, 2013.

  • Colorectal cancer. American Cancer Society website. Available at: Updated January 17, 2013. Accessed May 14, 2013.

  • Colorectal cancer. EBSCO DynaMed website. Available at: Updated May 3, 2013. Accessed May 14, 2013.

The health information in this Health Library is provided by a third party. Parkridge Health System does not in any way create the content of this information. It is provided solely for informational purposes. It does not constitute medical advice and is not intended to be a substitute for proper medical care provided by a physician. Always consult with your doctor for appropriate examinations, treatment, testing, and care recommendations. Do not rely on information on this site as a tool for self-diagnosis. If you have a medical emergency, call 911.