Signs of colon cancer (also called colorectal cancer) can vary and sometimes may not appear early, but common symptoms include:
- A change in bowel habits, such as diarrhea, constipation, or a feeling that the bowel does not empty completely
- Blood in or on the stool, which may be bright red or dark (black or tarry stools)
- Rectal bleeding or bleeding from the bottom
- Persistent abdominal pain, cramps, bloating, or discomfort that does not go away
- Unexplained weight loss
- Weakness, fatigue, or symptoms of anemia such as feeling very tired or short of breath
- A feeling of needing to have a bowel movement that is not relieved by doing so
- A lump in the abdomen or tummy
More advanced colon cancer may cause additional symptoms such as bowel obstruction, jaundice (yellowing of skin and eyes), liver enlargement, persistent coughing, or neurological symptoms if it has spread
. Because these symptoms can also be caused by other conditions, it is important to see a doctor if you experience any of them, especially if they persist for more than a few weeks
. Early detection through screening is crucial since colon cancer may not cause symptoms initially
. In summary, key signs to watch for are changes in bowel habits, blood in stool, abdominal pain, unexplained weight loss, and fatigue
