If any of your biopsies show that there is cancer in the rectum, you will have more tests. These are to find out the size and position of the cancer and whether it has spread. This is called staging. The results will help you and your doctor decide on the best treatment for you. Some tests may be repeated during and after treatment to check your progress. Your doctor or specialist nurse will explain this to you.
You will usually have blood tests, a CT scan and an MRI (magnetic resonance imaging) scan. Some people also have an endorectal ultrasound or a PET-CT scan.