The radiotherapy team plan your external beam radiotherapy before you start treatment. 

Radiotherapy can be used to treat non small cell lung cancer. You have it in the hospital radiotherapy department. 

Radiotherapy uses high energy x-rays to destroy cancer cells. It is sometimes given in combination with chemotherapy for small cell lung cancer. 

Radiotherapy to the lung can cause side effects such as tiredness, sore skin and a cough. 

For small cell lung cancer, doctors sometimes use radiotherapy to the brain to kill any cancer cells that might have spread there.