consistent changes in stool shape — especially if they’re flat or ribbon-like — can be a sign of narrowing or obstruction in the colon, often linked to colorectal cancer. But that wasn’t ...

It can be a sign of a problem in your digestive system, such as a growth, or polyp, or cancer in the colon or rectum ... Other tests require you to collect stool samples on more than one day.

Changes in bowel movements, abdominal pain, loose stool, bloating and constipation are common symptoms of colon cancer, but it’s all too easy to write them off as being due to stress ...