Signs & Symptoms

Most symptoms of colorectal cancer can also be indicative of less serious digestive conditions. It’s important to consult a healthcare professional, especially if symptoms persist for more than 4 weeks. In addition to this, many colorectal cancers won’t show any symptoms until they have progressed to later stages. Here are some of the most common symptoms of colorectal cancer:

  • Changes in bowel habits.
  • Diarrhea or constipation.
  • Feeling of bowel fullness, even after a bowel movement.
  • Blood in feces, which may make stools look black.
  • Bright red blood coming from the rectum.
  • Pain and bloating in the abdomen.
  • Feeling of fullness in the abdomen, even after not eating for a while.
  • Fatigue or tiredness.
  • Unexplained weight loss.
  • Lump in the abdomen or back passage.
  • Unexplained iron deficiency in men, or in women after menopause.


Information taken from Medical News Today.