Coloured computed tomography (CT) of an axial section of the abdomen of a 28 year old patient with cancer of the right kidney. Kidney cancers may spread (metastasise) to other parts of the body via the blood or lymphatic system. Treatment is with removal of the kidney, radiation therapy, chemotherapy or immune therapy. Kidney cancer is most common in men over 50 years of age, although it can affect anyone. Family history of the disease and smoking are the main risk factors. This is a CT scan under intravenous iodine injection.