1. Medical treatment of disease, especially cancer, using ionizing radiation
The patient underwent radiotherapy to treat the tumor.
O paciente foi submetido a radioterapia para tratar o tumor.
2. The therapeutic use of radioactive substances or radiation beams in medical treatment
Radiotherapy is often combined with chemotherapy in cancer treatment.
A radioterapia é frequentemente combinada com quimioterapia no tratamento do câncer.