Bladder cancer: Understanding late effects of radiotherapy
Late side effects may happen a few months or years after treatment. They might happen once, carry on over the long term or come and go. Sometimes they cannot be cured, but it might be possible to manage them.
You might have late effects not listed here, because everyone is different. They may also be caused by a different part of your cancer treatment. It is not possible to predict if you will get them and when they might happen, which can be difficult to come to terms with. Research and support for late effects of radiotherapy is growing.
Joining a support group can be a positive way to share your experiences, feel less alone, and come to terms with the physical and emotional impact of treatment. Ask your clinical team if you need more support or have any late effects at all.
This page looks at late side effects.
How likely am I to get late side effects?
Before treatment you will discuss and sign a consent form with your clinical oncologist or therapeutic radiographer. They will tell you what to expect, and you can ask questions and discuss any concerns you have about late effects.
You can click here to see different tumour site consent forms for radiotherapy. These consent forms are packed with useful information about early and late side effects.
When you consent to treatment, you are saying you understand that you have a chance of getting late side effects. Your team will use words like Expected, Common, Less Common and Rare.
This table shows what these words mean.
| Wording on the consent form | % chance of side or late effect | How many patients will get this? |
|---|---|---|
| Expected | 50 to 100% | Between half and all patients |
| Common | 10 to 50% | Up to half of all patients |
| Less common | Less than 10% | Fewer than one in ten patients |
| Rare | Less than 1% | Fewer than one in 100 patients |
Possible late side effects
- Effects on the bladder: Sometimes, the bladder can become smaller after radiotherapy. This means you might need to wee more often in the long term.
If your bladder works well before treatment, this is less likely to be a problem.
- Effects on the bowels: Your bowels might change after treatment. You might feel the need to use the toilet more often or have constipation or loose poo.
- Lymphoedema: You might have swelling in the legs or lower body due to fluid buildup.
- Cancer-related fatigue: You might find you still have fatigue after your treatment has finished. For some people this can go on for months or years.
Rare or less common side effects
- Second Cancer: There is a very small chance that you could develop another type of cancer. This small risk is also from all the X-rays and scans you have had over your life, and natural exposure to radiation around us. The chance of this happening is about 0.5 – 1% over 10 years.
What can help with these late effects?
- Bladder care: Keep drinking water and talk to your doctor if you have trouble with weeing.
- Bowel health: Professional advice on what food and drink to have can help. So can medication. Speak to your treatment team about any bowel changes and watch for any signs of blockage.
- Managing lymphoedema: Special exercises and treatments can help reduce swelling. Ask to speak to a lymphoedema specialist if this is a concern.
- Monitoring rare side effects: Talk to your medical team as soon as you notice any changes, this can help catch and treat any serious problems early.
- Managing cancer-related fatigue: Food and drink, keeping active, keeping a fatigue diary, medicine like steroids and physiotherapy may all be options for managing fatigue. Speak to your doctor or medical team for advice.
- Keeping active: Gentle movement can help you feel better, both during and after treatment. Your treatment team can tell you what is safe for you to do.
Always talk to your doctor or medical team about any late effects you have. Even if they are not mentioned here. Everyone is different and experiences treatment differently. There may be ways they can help you reduce or manage symptoms.
Further information
Learn more about side effects and support here:
Pelvic Radiation Disease Association
Learn more about radiotherapy consent forms here:
https://www.rcr.ac.uk/our-services/management-service-delivery/national-radiotherapy-consent-forms/
Learn more about radiation skin reactions here:
Learn more about managing cancer fatigue:
Managing and treating cancer fatigue | Cancer Research UK
Cancer-related fatigue | NHS inform
Learn more about LGBTIQ+ support around cancer treatment and sex:
Learn more about sex and cancer here:
Pelvic radiotherapy for women | Sexuality and cancer | Cancer Research UK
