Arterial embolisation is when a substance is injected into a blood vessel (artery) in the kidney to block the blood supply to the cancer. This reduces the supply of oxygen and nutrients to the tumour, which can make it shrink or stop growing. It can help control symptoms, such as pain or bleeding.
You may be offered tumour embolisation if an operation is not possible for you.
You may need to stay in hospital overnight, or possibly for a day or two longer. Before treatment, the nurse or doctor usually gives you a mild sedative to help you relax. They then inject some local anaesthetic into the skin at the top of the leg (the groin) to numb the area.
A doctor puts a thin, plastic tube (catheter) into a blood vessel in the groin. Using x-ray pictures as a guide, they thread the catheter upwards until the tip is in the artery that carries blood to the area of the kidney where the cancer is. The doctor injects a substance, such as tiny beads, through the catheter into the artery, which blocks the blood supply to the cancer.