External radiotherapy uses high energy waves similar to x-rays to destroy cancer cells. Read about how your radiotherapy is planned, how you have it and the possible side effects.
Find out what happens at your planning appointment for external radiotherapy.
Find out about what happens when you have external radiotherapy for prostate cancer.
Radiotherapy to the prostate can cause some side effects, such as loose or watery poo (diarrhoea) and passing wee (urine) more often.
You might have long term side effects after having external radiotherapy for prostate cancer, such as erection problems (impotence). Find out what you can do about them.