Radiotherapy is a medical treatment that uses high-energy radiation to target and destroy cancer cells. It works by damaging the DNA inside these cells, making it difficult for them to grow and multiply. This treatment can be used alone or alongside other methods like surgery or chemotherapy to improve the chances of recovery. Patients typically receive radiotherapy in a series of sessions, which can last from a few minutes to an hour each time. The treatment is carefully planned by a team of specialists, including radiation oncologists and medical physicists, to ensure that the radiation precisely targets the tumor while minimizing damage to surrounding healthy tissue.