There are three key symptoms of colon cancer you should know, according to Cann. And while some have a more obvious ...

A negative test result means that no blood was found in the stool sample during the testing ... with a tiny camera on it to check your entire colon); CT colonography (also called a virtual ...

Diarrhea is also the most common symptom. Your stool may have streaks of blood due to inflammation in the colon. Damage and irritation to the rectum can cause you to feel like you constantly need ...