16382 Mri Guided Prostate Biopsy

Overview

An MRI-guided prostate biopsy is a test that takes tiny pieces of tissue from your prostate to look at under a microscope. Your prostate is a small, walnut-sized gland that sits just below the bladder in men and makes part of the fluid in semen. Before the biopsy, you have an MRI scan (a detailed picture using magnets, not X-rays). If the scan shows an area that looks suspicious, the doctor uses those pictures like a map to guide the needle to that exact spot. This is sometimes called a 'targeted' biopsy. It helps make sure the right area is sampled, and it can mean fewer needle samples are needed.

Yes. Prostate biopsies are one of the most common tests done for men who have a raised PSA blood test or an unusual MRI scan. MRI-guided (targeted) biopsies are now widely used in the UK NHS and in many other countries, because they are more accurate than taking samples blindly.

It is done mostly in men over 50, because the prostate gets bigger with age and prostate problems become more common. Men with a close relative who has had prostate cancer, and Black men, are more likely to be offered this test because their risk of prostate cancer is higher. It is not done in children.

Symptoms

Common symptoms

• Often there are no symptoms at all — the test may be offered after a routine PSA blood test came back higher than expected.
• Needing to pee often, especially at night
• A weak or slow urine stream, or dribbling
• A feeling that your bladder is not fully empty
• Burning or discomfort when you pee
• Blood in your urine or semen
• Pain in the lower belly, back, hips or the area between the scrotum and back passage (the perineum)

Symptoms in children

• This test is not used in children. The prostate is a male gland that only starts to grow during puberty, so prostate tests and prostate biopsies are adult concerns. If a child has problems passing urine, a doctor will look for other, much more common causes.

Symptoms in older adults

• Prostate problems and prostate cancer are more common with age, so this test is most often offered to older men.
• The prostate naturally gets bigger over the years, which can cause urinary symptoms even when there is no cancer.
• If you take blood-thinning medicines or have other long-term conditions, tell your team beforehand — they may adjust your plan to make the biopsy safer for you.
• Older adults may want to talk through the pros and cons carefully, especially if a slow-growing cancer is found, because not every prostate cancer needs treatment.

Causes

Main causes

• This test is not caused by anything — it is done to check why something looked unusual. The usual reasons it is offered are:
• A PSA blood test that is higher than expected (PSA is a protein made by the prostate; a high level can be a sign of prostate cancer, but also of infection, an enlarged prostate or recent activity)
• An MRI scan that shows an area in the prostate that looks suspicious
• A previous biopsy that was unclear, or a need to check how a known prostate cancer is behaving
• Symptoms such as blood in the urine or trouble peeing, once other causes have been checked

Risk factors

• Being over 50 (over 45 if you are Black or have a strong family history)
• Having a father or brother with prostate cancer
• Being Black African or Black Caribbean — the risk is about twice as high
• Carrying certain inherited gene changes (for example BRCA changes) — your doctor can explain this
• A previously raised PSA level or an abnormal prostate MRI

When to see a doctor

See a doctor urgently if:

• After a biopsy: fever, shivering, heavy bleeding, or being unable to pee — get medical help the same day, and call emergency services if you feel very unwell
• Blood in your urine that is heavy or does not settle
• Pain that is getting worse despite simple pain relief

Book a routine appointment if:

• You have urinary symptoms such as needing to pee often, a weak stream or getting up at night
• You have blood in your urine or semen
• You are wondering whether a PSA test is right for you — you can talk this through with your GP
• Prostate cancer runs in your family and you want to discuss your risk
• You are anxious about your results and want them explained again

Diagnosis

The biopsy itself is how doctors find out for certain what is happening in your prostate. Blood tests and scans can only suggest that something looks unusual — only a tissue sample examined under a microscope can show whether there are cancer cells, and if so, how quickly they are likely to grow. The pattern seen under the microscope is given a grade, which helps your team advise you on whether any treatment is needed.

Tests that may be done

• PSA blood test — measures a protein made by the prostate
• MRI scan of the prostate — detailed pictures that show whether any area looks suspicious
• MRI-guided (targeted) biopsy — small tissue samples taken from the exact area seen on the MRI, plus samples from the rest of the gland
• Urine test before the biopsy, to check for infection
• Microscope examination of the samples, which gives a grade (sometimes called a Gleason score or Grade Group)
• Sometimes further blood tests or a repeat PSA to build the full picture

What to expect at your appointment

You will usually be asked to stop eating for a few hours beforehand, and your team will tell you whether to take your usual medicines. You may be given an antibiotic around the time of the procedure to lower the risk of infection. The biopsy is usually done with you lying on your side, and the area is numbed with an injection. The doctor passes a thin needle through the skin between your scrotum and back passage, guided by the MRI pictures on a screen. Each sample takes a second or two, and the whole thing usually takes about 15 to 30 minutes. You may feel pressure or a brief sharp sensation. Afterwards you may have a small amount of bleeding from your back passage, blood in your urine or semen, and some soreness — this usually settles within a few days to a couple of weeks. You can normally go home the same day, but you should not drive yourself, so arrange a lift.

Treatment

The biopsy is a test, not a treatment — so the next step depends entirely on what the samples show. If no cancer is found, you and your doctor will decide whether you need any further checks. If cancer is found, your team will explain the grade and the size, and talk you through the options. Many prostate cancers are slow-growing and are safely monitored with regular tests rather than treated straight away. More active treatment is only recommended when it is likely to do you more good than harm.

Self-care at home

• Follow the written instructions your team gives you — they are specific to your case.
• Drink plenty of fluids for the first couple of days after the biopsy.
• Avoid heavy lifting, straining, and strenuous exercise for about a week, or as long as your team advises.
• Take any antibiotic your team gives you exactly as directed, and finish the course.
• Simple pain relief such as paracetamol may be enough for soreness — check with your pharmacist or GP first, especially if you take other medicines.
• Keep drinking water and avoid constipation, which can make soreness worse.
• Note any fever, heavy bleeding or trouble peeing, and contact your team straight away if it happens.

Medical treatments

There is no medicine that treats the biopsy itself. Treatment for prostate cancer, if it is needed, may include careful monitoring with regular PSA tests and scans (often called active surveillance), radiotherapy given from outside or inside the body, hormone treatment that lowers the male hormones that feed prostate cancer, or surgery. Your team will explain the benefits and drawbacks of each option for your particular situation, including how each might affect your urinary control and sexual function. Some men choose to take part in a clinical trial — ask your team whether any are suitable for you.

When is surgery considered?

Surgery may be discussed in two situations. First, if cancer is found and you and your team decide that removing the prostate is the right treatment for you — this is usually keyhole or robot-assisted surgery. Second, rarely, a biopsy can cause problems such as being unable to pass urine or a collection of pus (an abscess) that needs a small procedure to fix. Most men do not need surgery after a biopsy.

Living with this condition

Most people are back to normal within a few days. Blood in your semen can last for several weeks and is harmless, though it can be surprising if nobody warned you. Blood in your urine is usually mild and clears within a few days. You may feel more tired than usual for a short while. Waiting for results is often the hardest part — plan something to keep yourself occupied, and ask your team when to expect a call so you are not left guessing.

Lifestyle tips

• Keep gently active — short walks help you recover and lift your mood.
• Avoid long car journeys or straining on the toilet for the first few days.
• Cut back on caffeine and alcohol if they make you need to pee more at night.
• Keep a simple note of any symptoms and when they started, so you can describe them clearly.
• Bring someone with you to results appointments if you can — two sets of ears help.

Diet and exercise

There is no special diet that treats prostate problems, but a balanced, varied diet and regular movement are good for your general health and recovery. Aim for plenty of vegetables, fruit, beans and whole grains, and choose water over sugary drinks. Drink enough fluid each day, but try to drink less in the couple of hours before bed if you are getting up at night. Gentle exercise such as walking, swimming or cycling is fine once your team says it is safe — usually after about a week. There is no strong evidence that any single food or supplement prevents or cures prostate cancer, so be cautious about anything that promises a cure.

Mental health and emotional wellbeing

It is very common to feel anxious before the test and while waiting for results. Some men feel frightened, irritable, or find it hard to sleep. Some find it difficult to talk about prostate problems at all. These feelings are understandable and nothing to be ashamed of. If low mood or worry is affecting your sleep, appetite or daily life, tell your GP or your hospital team — talking therapies and support are available. If you ever feel you cannot cope or have thoughts of harming yourself, contact your local crisis service or your local emergency number straight away.

Prevention

You cannot prevent the need for a biopsy, because it is a test rather than an illness. What you can do is look after your general health and be aware of your risk. A healthy weight, not smoking, staying active and eating a varied diet are linked with lower risk of several cancers, though no lifestyle change guarantees you will not get prostate cancer. The most useful thing is to know your own risk and to speak to your GP if you are concerned.

Vaccines

There is no vaccine that prevents prostate cancer or the need for a prostate biopsy.

Screening programmes

There is no national prostate screening programme in the UK. Instead, men can choose to have a PSA blood test after talking through the benefits and drawbacks with their GP — this is sometimes called 'informed choice'. The test can miss some cancers and can also flag up problems that would never have caused harm, leading to unnecessary worry and tests. If you are over 50, or over 45 and Black or have a family history of prostate cancer, it is reasonable to ask your GP about a PSA test and discuss what the result would mean for you.

Complications

If left untreated

• If a suspicious area is not checked, a cancer could be missed and have time to grow or spread before it is found.
• Not knowing the cause of a raised PSA can leave you anxious and may mean other treatable problems, such as an infection or an enlarged prostate, are not dealt with.
• The biopsy itself has small risks, even when done well: infection (including a serious infection needing hospital care in a small number of men), bleeding, trouble passing urine, or fainting during the procedure.
• Most of these problems are treatable, and your team will give you clear instructions on what to watch for and who to contact.

Long-term outlook

The outlook is generally good. This test is safe for most people and gives your team the information they need to advise you properly. Most biopsies do not find cancer. If cancer is found, many prostate cancers are slow-growing and can be watched safely for years, and treatments for those that do need treating are improving all the time. Whatever your result, you will not be left to work it out alone — your team will explain the options and help you choose what is right for you.

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