Cancer attacks through stealth and speed. A few cancerous cells renew quickly, turning into many that infect localised and surrounding tissues. If nothing is done, they can spread throughout the whole body. Treating cancer therefore aims to destroy the cells and prevent them from spreading.
Surgery, radiotherapy and chemotherapy are the three ways in which cancer is generally treated. With surgery, the cancer is small and localised, and it’s possible to remove it by cutting it out. Radiotherapy tries to eliminate cancer through radiation that can be provided in a number of ways.
Chemotherapy, delivered increasingly as targeted therapy, uses powerful drugs to attack cancer. Given orally or through injection, they also act to stop cancer cells from spreading and destroy them.