Radiotherapy
Radiotherapy may be the first choice of treatment for some types of nasal cavity and paranasal sinus cancers. It can cure many people with early stage cancers. Whether this type of treatment is suitable for you will depend on:
which type of cancer you have
the size of the cancer
how far it has grown into the surrounding tissues
exactly where the cancer is
You may have radiotherapy and chemotherapy together (chemoradiotherapy). This might be for some types of nasal cavity and paranasal sinus cancers.
Radiotherapy after surgery is called adjuvant therapy. It helps to stop your cancer from coming back. Doctors use radiotherapy after surgery for several reasons. You may have it because:
the tumour was difficult to remove
your surgeon thinks there may be cancer cells left behind
the tumour had spread locally into nearby structures
cancer cells were found in your lymph nodes
You usually have treatment every day, Monday to Friday, for between 4 and 7 weeks. You have up to 35 separate treatments called fractions. Breaking the treatment down into a series of smaller treatments helps to keep side effects under control.
If you add up all the radiation doses you have in the fractions, the total will be the complete dose of radiation your specialist has prescribed for you.
Radiotherapy can relieve symptoms in advanced nasal cavity and paranasal sinus cancers. This is also called palliative radiotherapy.
Your cancer may be causing difficulty in swallowing or breathing. Some nasal cavity and paranasal sinus cancers are close to the brain, so they can grow and put pressure on the brain. Radiotherapy can help to relieve this pressure.
The treatment relieves symptoms by shrinking the cancer. The cancer may grow back, but it could take a while to do so. No one can say how long, but the radiotherapy could relieve your symptoms for some time.
Radiotherapy can also help to relieve pain and control any bleeding. To control symptoms, you are most likely to have a short course of treatment over a few days.
There are different types of external radiotherapy. You usually have a type of radiotherapy called intensity modulated radiotherapy (IMRT) for nasal or paranasal cancer. This treatment directs a precisely targeted dose of radiation to the area of the tumour from outside the body.
Read more about intensity modulated radiotherapy (IMRT)
Proton beam radiotherapy is sometimes used for:
very rare sinus cancers
treatment to an area called the skull base
Your specialist doctor will refer you for this specialised type of radiotherapy if they think it is the best treatment for you.
Read more about proton beam radiotherapy
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 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.

You need to lie very still. Your radiographers might take images (x-rays or scans) before your treatment. This is 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.
This video shows what happens during the treatment. The video lasts 1:17 minutes.
This type of radiotherapy won't make you radioactive. It's safe to be around other people, including pregnant women and children.
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 who 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.
Radiotherapy for nasal and paranasal sinus cancer causes tiredness and sore, red skin in the area being treated. It can also cause other effects.
Read more about side effects of nasal and paranasal sinus cancer radiotherapy
Last reviewed: 17 Jan 2024
Next review due: 17 Jan 2027
Radiotherapy treatment for nasal and paranasal sinus cancer can cause side effects. Knowing what support is available can help you to cope with them.
Your treatment depends on several factors. These include what type of nasal and paranasal sinus cancer you have, how big it is, whether it has spread (the stage) and the grade. It also depends on your general health.
There is support available during and after treatment to help you cope. This includes support from your clinical nurse specialist, cancer charities, community services, and family and friends.
The radiotherapy team plan your external radiotherapy before you start treatment.
Radiotherapy uses high energy x-rays to destroy cancer cells. You usually have a type of external radiotherapy called intensity modulated radiotherapy (IMRT).

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