Colon cancer treatment usually involves surgery, but you may need to have some other treatments too. One of the treatments that may be used in conjunction with surgery is chemotherapy.
PET-CT scans combine two different forms of imaging to help your doctor to understand what is going on inside your body. Using two different scanning techniques enables your doctor to look for both structural and functional abnormalities. The results can be used for diagnosis, to guide treatment, or to monitor how your condition is changing.