What is cryotherapy?

Cryotherapy is a treatment that uses extreme cold to freeze and destroy cancer cells. You might also hear it called cryosurgery or cryoablation. Thin needles are put into the prostate and a gas is passed down them to kill the cancer cells.

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Types of cryotherapy

There are two types of cryotherapy.

• Whole-prostate cryotherapy treats the whole prostate, including both the cancer cells and the healthy prostate tissue.

• Focal cryotherapy only treats the part of the prostate where the cancer is. It uses fewer needles, which means that less healthy tissue is frozen than in whole-prostate cryotherapy.

Focal cryotherapy isn’t suitable for all men. This will depend on the size of your cancer, and where it is in your prostate.

Who can have cryotherapy?

Cryotherapy could be a suitable first treatment if your cancer hasn't spread outside your prostate (localised prostate cancer) and has a low or medium risk of spreading.

It's sometimes an option if your cancer has started to break out of the prostate but hasn't spread to the surrounding area. It's not an option if your cancer has spread from the prostate to other parts of your body (advanced prostate cancer).

Cryotherapy can also be used to treat localised prostate cancer that has come back after treatment with either external beam radiotherapy or brachytherapy (recurrent prostate cancer). This is called salvage cryotherapy.

In the UK, cryotherapy is only available in specialist centres or as part of a clinical trial. This is because it is newer than some treatments, so we don't know as much about the risk of side effects or how well it works in the long term.

Speak to your doctor about whether cryotherapy is a suitable option for you and whether it's available in your area.

Other treatment options

If you have localised prostate cancer, other treatment options may include:

• active surveillance
• watchful waiting
• surgery to remove the prostate (radical prostatectomy)
• external beam radiotherapy
• brachytherapy - a type of internal radiotherapy

You may also be offered high-intensity focused ultrasound (HIFU), which uses high-frequency ultrasound energy to heat and destroy cancer cells in the prostate.

If you have locally advanced prostate cancer your treatment options may include:

• external beam radiotherapy with hormone therapy (and sometimes with high dose-rate brachytherapy)
• hormone therapy alone
• watchful waiting
• surgery (but this is less common).

If your cancer has returned after radiotherapy (recurrent prostate cancer), you may be able to have HIFU or hormone therapy. You might also be able to have surgery (radical prostatectomy), but this is rare.

What are the advantages and disadvantages?

What may be important for one person might not be important for someone else. If you're thinking about having cryotherapy, speak to your doctor or nurse before deciding whether to have it – they can help you choose the right treatment for you. Take time to think about whether you want to have cryotherapy. We've included a list of questions that you might find helpful. You can also ask about any other treatments that might be available.

Advantages

• Cryotherapy is less invasive than some other treatments, with little or no bleeding.
• You will only be in hospital for a day or overnight.
• Recovery is usually quick and most men return to their normal activities within a few weeks.
• You may be able to have cryotherapy if your cancer has come back after radiotherapy or brachytherapy.
• You may be able to have cryotherapy again if your cancer comes back after your first cryotherapy treatment. This isn't the case with all treatments.

Disadvantages

• You may get side effects that might affect your daily life, such as erection and urinary problems.
• Compared with other treatments, we don't know as much about how well cryotherapy works or the risk of side effects in the long term (after 10 years).
• You will usually need a general anaesthetic, so you'll need to stay at the hospital for a day or overnight.
• Cryotherapy isn't widely available in the UK.

What does cryotherapy involve?

Each hospital does things differently. We've included some general information about what might happen. Your doctor or nurse will give you more information about what will happen before, during and after your treatment.

Before your treatment

If your prostate is very large you may have hormone therapy for two to three months before you have cryotherapy. This can make the prostate smaller, and make the cancer easier to treat. As with all treatments, hormone therapy can cause side effects. 

Your bowels need to be empty during cryotherapy so that your doctor can take clear scans of your prostate. So you might be given a laxative or an enema to empty your bowels before the treatment. An enema is a liquid that is put inside your back passage (rectum). You’ll also be asked not to eat for about six hours before the treatment, but will still be able to drink water up to four hours before the treatment.

During your treatment

Cryotherapy is usually done under general anaesthetic so that you’re asleep and won’t feel anything. If you can’t have a general anaesthetic for health reasons, you may be able to have a spinal (epidural) anaesthetic, so that you can’t feel anything in your lower body.

Your surgeon will pass a tube called a warming catheter up your penis and into your bladder. Warm liquid is passed through the catheter during the treatment so that your urethra (the tube you urinate through) and the wall of your back passage do not freeze.

The surgeon will place an ultrasound probe inside your back passage. This takes images of your prostate and displays them on a screen so your surgeon can see where to put the needles. They will then put several thin treatment needles through the skin between your testicles and back passage (perineum), and into your prostate.

Your surgeon will also put in some other thin needles to monitor the temperature in and around your prostate. This is to make sure the areas being treated reach the correct temperature, while the areas around your prostate, bowel and back passage do not freeze.

Freezing gases are passed down the treatment needles, causing the temperature to drop to about -40°C. This freezes and destroys the prostate tissue. Your prostate is then allowed to warm up, either naturally or by passing a different gas through the needles to warm it. This process of freezing and warming is usually carried out twice. The whole process takes about one to two hours.

The needles and probes are then removed, and the warming catheter is removed about 10 to 20 minutes later.

You’ll then have another tube put in to drain urine out of your bladder, either through your penis (urethral catheter) or through a small cut in your abdomen (suprapubic catheter). Some hospitals may put a suprapubic catheter in before treatment. Your catheter will be left in for a week or two.

After your treatment

Most people can go home the same day or the following day. It’s normal to have some pain or discomfort. Your doctor or nurse will tell you which pain-relieving drugs you can take.

You’ll be given antibiotics to take for a few days, to lower your risk of infection. Contact your doctor or nurse if you have any signs of a urine infection, such as:

• a high temperature (fever)
• feeling shivery
• a burning feeling when you urinate (pee)
• dark, cloudy or strong-smelling urine
• needing to urinate more often than usual.

You may be given drugs called alpha-blockers, such as tamsulosin or alfuzosin, to relax the muscle in and around your prostate to help you urinate. You may need to take them for a few weeks, or longer if you still have problems urinating. Alpha-blockers can cause side effects, so ask your doctor or nurse about these if you have any worries.

Cryotherapy usually causes the prostate to swell to begin with, which can make it difficult to urinate. You’ll go home with your catheter in place to drain urine from your bladder until the swelling has improved. Your urine will drain into a bag that you can empty. Or you might be offered a catheter valve instead of a bag. The valve fits on the end of the catheter tube and works like a tap. This means your urine will be stored in your bladder as usual. When you need to urinate, you can open the valve to empty your bladder. Your nurse will show you how to care for your catheter before you leave hospital.

Your catheter will usually be taken out at hospital one to two weeks after your cryotherapy treatment. This may feel uncomfortable. You’ll need to stay at the hospital for a few hours afterwards to check that you can urinate properly.

When the catheter is first removed, you may find that you leak urine. It’s a good idea to take spare underwear and trousers with you to the appointment. You can wear incontinence pads to absorb the urine – check if your hospital will provide these. If not, you can buy some at a pharmacy and take them with you to the appointment.

You may see some blood in your urine while the catheter is in place, and immediately after it’s taken out. This is normal. Drink plenty of fluids to help clear the blood. If you see signs of infection or lots of blood clots in your urine, speak to your doctor or nurse.

You might have some bruising and swelling around your testicles, buttocks and inner thighs for a few days after treatment. This can be worrying but is normal and will pass. It may help to wear tighter underwear for support. Holding an ice pack against the bruised and swollen area for 10 minutes every hour may help to reduce the swelling.

Your doctor or nurse may advise you not to stand for long periods of time for the first few weeks, as this can cause the prostate to swell more. You should be able to go back to your day-to-day activities as soon as you feel able to. But it may take a few weeks or months before you feel back to normal.

What happens afterwards?

You will have check-ups with your doctor or nurse at the hospital, including regular PSA tests. The PSA test is a blood test that measures the amount of a protein called prostate specific antigen (PSA) in your blood. It’s a good way to check how well the cryotherapy has worked. You may also have an MRI scan after treatment to check all your cancer has been treated.

How often you have check-ups will depend on your hospital, but you should have a PSA test about every three to six months for at least the first year, and every six months after that. Ask your doctor or nurse how often you’ll have PSA tests.

After cryotherapy, your PSA level should fall and then stay low. A continuous rise in your PSA level could be a sign that your cancer has come back. If this happens, your doctor may suggest you have further tests, such as an MRI scan or a prostate biopsy, to find out if it has.

If your cancer has come back, your doctor will talk to you about further treatment options. If cryotherapy was your first treatment, you may be offered more cryotherapy. Or they may offer radiotherapy or surgery. If you had cryotherapy as a second treatment following radiotherapy, you may be offered hormone therapy. 

What are the side effects?

Like all treatments, cryotherapy can cause side effects. These will affect each man differently and you may not get all of them.

The most common side effects of cryotherapy are erection and urinary problems.

Many of the side effects of cryotherapy are caused by healthy tissues being frozen and damaged. Side effects are more likely if you have already had radiotherapy or brachytherapy to your prostate. This is because they may have already damaged the area around your prostate.

Focal cryotherapy can cause the same side effects as whole-prostate cryotherapy. But some research suggests focal cryotherapy may cause less severe side effects, because a smaller area of the prostate is damaged than with whole-prostate cryotherapy.

Ask your doctor or nurse for more information about your risk of side effects. They may be able to show you results of treatments they've carried out and put you in touch with other men who've had cryotherapy.

Dealing with prostate cancer

Being diagnosed with prostate cancer can change how you feel about life. If you or your loved one is dealing with prostate cancer you may feel scared, stressed or even angry. There is no ‘right’ way to feel and everyone reacts differently. There are things you can do to help yourself and people who can help.

Questions to ask your doctor or nurse

You may find it helpful to keep a note of any questions you have to take to your next appointment.

• Where is this treatment available?
• What are my other treatment options?
• Will I have focal or whole-prostate cryotherapy?
• What are the side effects of cryotherapy, how likely am I to get them, and how can they be managed?
• How much experience do you have in carrying out cryotherapy? Can I see the results of treatments you've carried out?
• How often will you check my PSA level after the treatment?
• How will we know if the treatment has worked?
• How likely is it that I'll need more treatment after cryotherapy?
• What treatments are available after cryotherapy?

References

Updated: June 2018 | Due for Review: June 2021