Other conditions may cause the same symptoms, so it is important to see your healthcare provider if you experience any of these symptoms.
Diagnosing Colon Cancer
To make a colon cancer diagnosis, your doctor may perform one or more tests to look for the disease. These are the same tests used for colon cancer screening. They can include:
If a biopsy shows that cancer is present, the doctor needs to know the stage of the colon cancer (how far it has progressed) to plan the best treatment. Colon cancer stages are based on whether the tumor has invaded nearby tissues, whether the cancer has spread, and, if so, to what parts of the body.