In this procedure, the clinician places chemotherapeutic and synthetic materials called as embolic agents into the blood vessels which feed cancerous tumor. This results in cutting-off tumor’s blood supply, as well as traps the chemotherapeutic agent within the tumor. It is most often used to treat liver cancer but may also be used in patients whose cancer has metastasized. It may be used as a standalone treatment or in combination with surgery, ablation, and chemotherapy or radiation therapy.