External radiotherapy for neuroendocrine cancer

Radiotherapy means the use of radiation, usually x-rays, to treat cancer cells. External radiotherapy uses a machine from outside of the body. It directs radiation beams at the cancer to destroy it. It is also called external beam radiotherapy.

This is different to internal radiotherapy which means giving radiotherapy to the cancer from inside the body.

Planning radiotherapy

The radiotherapy team plan your radiotherapy before you start treatment. This means working out the dose of radiotherapy you need and exactly where you need it.

Your planning appointment takes from 15 minutes to 2 hours.

You usually have a planning CT scan Open a glossary item in the radiotherapy department.

The scan shows the cancer and the area around it. You might have other types of scans or x-rays to help your treatment team plan your radiotherapy. The plan they create is just for you.

The radiotherapy room

Radiotherapy machines are very big and could make you feel nervous when you see them for the first time. The machine might be fixed in one position. Or it might rotate around your body to give treatment from different directions. The machine doesn't touch you at any point.

Before your first treatment, your radiographers Open a glossary item will explain what you will see and hear. In some departments, the treatment rooms have docks for you to plug in music players. So you can listen to your own music while you have treatment.

Photo of a linear accelerator

During the treatment

You need to lie very still. Your radiographers might take images (x-rays or scans) before your treatment to make sure that you're in the right position. The machine makes whirring and beeping sounds. You won’t feel anything when you have the treatment.

Your radiographers can see and hear you on a CCTV screen in the next room. They can talk to you over an intercom and might ask you to hold your breath or take shallow breaths at times. You can also talk to them through the intercom or raise your hand if you need to stop or if you're uncomfortable.

You won't be radioactive

This type of radiotherapy won't make you radioactive. It's safe to be around other people, including pregnant women and children.

Travelling to radiotherapy appointments

You might have to travel a long way each day for your radiotherapy. This depends on where your nearest cancer centre is. This can make you very tired, especially if you have side effects from the treatment.

You can ask your radiographers for an appointment time to suit you. They will do their best, but some departments might be very busy. Some radiotherapy departments are open from 7 am till 9 pm.

Car parking can be difficult at hospitals. Ask the radiotherapy staff if you are able to get free parking or discounted parking. They may be able to give you tips on free places to park nearby.

Hospital transport may be available if you have no other way to get to the hospital. But it might not always be at convenient times. It is usually for people who struggle to use public transport or have any other illnesses or disabilities. You might need to arrange hospital transport yourself.

Some people are able to claim back a refund for healthcare travel costs. This is based on the type of appointment and whether you claim certain benefits. Ask the radiotherapy staff for more information about this and hospital transport.

Some hospitals have their own drivers and local charities might offer hospital transport. So do ask if any help is available in your area.

Side effects of radiotherapy

The side effects depend on which body part you're having treatment to. It also depends on the dose of radiotherapy. Radiotherapy to control symptoms is usually a lower dose. So you are less likely to get side effects.

The most common side effects of radiotherapy during and just after treatment are:

  • reddening of the skin in the treatment area
  • tiredness
  • loss of hair in the treatment area

Coping

Treatment for neuroendocrine cancer can be difficult to cope with for some people. Your nurse will give you phone numbers to call if you have any problems at home. 

If you have any questions about treatment, you can talk to Cancer Research UK’s information nurses on freephone 0808 800 4040, 9am to 5pm, Monday to Friday.

  • Expert Consensus Practice Recommendations of the North American Neuroendocrine Tumor Society for the management of high grade gastroenteropancreatic and gynecologic neuroendocrine neoplasms
    J Eads and others
    Endocrine Related Cancer 2023. Volume 30, Issue 8

  • European Neuroendocrine Tumor Society (ENETS) 2023 guidance paper for digestive neuroendocrine carcinoma
    H Sorbye and others
    Journal of Neuroendocrinology, 2023. Volume 35, Issue 3

  • External Beam Radiotherapy in the Treatment of Gastroenteropancreatic Neuroendocrine Tumours: A Systematic Review
    DL Chan and others
    Clinical Oncology, 2018. Vol 30, Pages 400-408

Last reviewed: 
23 Mar 2021
Next review due: 
22 Mar 2024

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