Internal radiotherapy for lung cancer

Internal radiotherapy can be given if the tumour is blocking one of the airways. It helps to open up the airway. The radiotherapy is given directly to the tumour and healthy tissue is only slightly affected. You usually have only one session of treatment. But the treatment can be repeated two or three times, depending on thedose of radiotherapy you need.

The doctor passes a thin tube (catheter) down your nose or throat into the lung using a bronchoscope. They place a small piece of solid radioactive material (the source) inside this tube and next to the tumour. The doctor leaves it in place for a few minutes to give you the treatment and then removes it.