What is the primary use of radiotherapy in cancer treatment?

The primary use of radiotherapy in cancer treatment is to destroy cancer cells using high-energy radiation. This form of treatment works by damaging the DNA within the cancer cells, preventing them from growing and dividing. Radiotherapy is particularly effective for localized tumors, where the high-energy rays can precisely target cancerous tissues while minimizing damage to surrounding healthy tissue.

While radiotherapy can also play supportive roles in cancer treatment, such as shrinking tumors before surgery or providing pain relief in advanced cases, its main purpose is the direct destruction of cancer cells. This capability makes it a crucial component of the overall cancer treatment regimen, often utilized alongside surgery, chemotherapy, and immunotherapy to improve patient outcomes.