Transperineal Prostate Biopsy in Kuala Lumpur
Prostate biopsy for raised PSA, abnormal prostate MRI, or suspected prostate cancer
A transperineal prostate biopsy is used to collect small tissue samples from the prostate when further assessment is needed after PSA testing, prostate MRI, or clinical examination.
Overview
A transperineal prostate biopsy is a diagnostic procedure used to collect small tissue samples from the prostate when further assessment is needed after a raised PSA, abnormal prostate MRI, or other concerning clinical findings.
Unlike the traditional transrectal biopsy approach, the biopsy needle passes through the perineal skin — the area between the scrotum and anus — rather than through the rectum. This route helps reduce infection risk and allows accurate sampling of different areas of the prostate, including MRI-suspicious regions when targeted biopsy is required.
The biopsy approach is planned according to PSA results, prostate MRI findings, prostate anatomy, medical history, medication use, and overall clinical risk.
At a Glance
A transperineal prostate biopsy may be considered when:
- PSA is persistently raised or rising
- prostate MRI shows a suspicious area
- previous biopsy was negative but concern remains
- biopsy results are needed to guide treatment planning
- active surveillance requires further assessment
The biopsy route is planned according to PSA results, MRI findings, prostate anatomy, medication use, and overall clinical risk.
What Is a Prostate Biopsy?
A prostate biopsy is a procedure that collects small samples of tissue from the prostate gland. These samples are examined under a microscope by a pathologist to check whether prostate cancer is present.
If cancer is found, the biopsy report also helps assess how aggressive the cancer appears and how much of the sampled tissue is involved. This information is important when deciding whether monitoring, surgery, radiotherapy, focal therapy, or other treatment options should be discussed.
A prostate biopsy may be recommended when:
- PSA levels are persistently raised or rising
- prostate MRI shows a suspicious area
- digital rectal examination detects an abnormality
- there is a strong family history or higher risk of prostate cancer
- a previous biopsy was negative but concern remains
- further information is needed during active surveillance
- cancer grade needs clarification before treatment planning
A raised PSA alone does not always mean prostate cancer. PSA can also rise because of benign prostate enlargement, inflammation, infection, recent ejaculation, cycling, or recent prostate procedures. The decision to proceed with biopsy is usually made after reviewing the overall clinical picture.
What Is a Transperineal Prostate Biopsy?
A transperineal prostate biopsy takes tissue samples through the perineum, which is the skin between the scrotum and anus.
This differs from a transrectal biopsy, where the biopsy needle passes through the rectum. Because the transperineal route avoids passing the needle through the bowel, it is associated with a lower risk of infection compared with the traditional transrectal approach.
During the procedure, ultrasound is used to visualise the prostate and guide the biopsy needle. If a prostate MRI has shown a suspicious area, targeted samples may be taken from that region. Additional systematic samples may also be collected from different zones of the prostate to reduce the chance of missing clinically significant cancer.
Why the Transperineal Route May Be Recommended
The transperineal approach is commonly used in modern prostate cancer diagnosis because it allows prostate tissue to be sampled through the skin rather than through the rectum.
Potential advantages include:
- Lower infection risk compared with the transrectal route, as the needle does not pass through the bowel
- Good access to different areas of the prostate, including anterior regions that may be harder to sample through the rectum
- Ability to combine MRI-targeted and systematic sampling when clinically appropriate
- Useful for repeat biopsy, especially when PSA remains raised despite a previous negative biopsy
- Suitable for day-procedure care in many patients, depending on the anaesthetic plan and medical factors
The biopsy route is only one part of the decision. PSA level, MRI findings, prostate size, previous biopsy history, medication use, infection risk, and overall health are also considered before recommending biopsy.
MRI-Targeted and Systematic Prostate Biopsy
A prostate biopsy may involve targeted samples, systematic samples, or a combination of both.
MRI-targeted biopsy
MRI-targeted biopsy focuses on suspicious areas seen on prostate MRI. These areas are often described using a PI-RADS score, which helps estimate how concerning a prostate lesion may be.
Targeted biopsy may be performed using MRI-ultrasound fusion guidance or cognitive targeting, depending on the clinical setting, imaging findings, and available equipment.
Systematic biopsy
Systematic biopsy involves taking samples from different zones of the prostate, even if MRI does not show a clear abnormality. This helps reduce the chance of missing clinically significant cancer.
In many cases, MRI-targeted and systematic biopsy are combined to improve diagnostic confidence.
How the Biopsy Approach Is Planned
A transperineal prostate biopsy is planned according to the reason for biopsy, MRI findings, prostate size, previous biopsy history, medication use, and overall health.
The biopsy plan may include:
- reviewing PSA level and PSA trend
- assessing prostate MRI findings
- identifying whether targeted biopsy is needed
- deciding whether systematic samples should also be taken
- considering prostate size and anatomy
- reviewing blood-thinning medication
- assessing infection risk and urine test results
- selecting the most suitable anaesthetic approach
Different transperineal biopsy access systems and techniques may be used depending on the clinical setting. The most important factors are accurate sampling, appropriate MRI targeting when needed, patient comfort, and reducing infection risk by avoiding the rectal route.
When May a Transperineal Prostate Biopsy Be Recommended?
A transperineal prostate biopsy may be considered when test results suggest a possible risk of prostate cancer or when more information is needed to guide management.
Common reasons include:
- persistently raised or rising PSA
- abnormal prostate MRI
- suspicious digital rectal examination
- previous negative biopsy but ongoing clinical concern
- monitoring during active surveillance
- clarifying cancer grade before treatment planning
- reassessment after previous prostate cancer treatment in selected cases
Not every raised PSA requires an immediate biopsy. In some cases, repeat PSA testing, PHI testing or prostate MRI may be recommended before deciding whether biopsy is needed.
What Happens During a Transperineal Prostate Biopsy?
A transperineal prostate biopsy is usually performed as a day procedure. The exact steps may vary depending on the biopsy technique, anaesthetic plan, and individual patient factors.
In general:
- You will be positioned so the prostate can be assessed clearly with ultrasound.
- Local anaesthetic, sedation, or general anaesthetic may be used depending on the planned approach.
- An ultrasound probe is used to visualise the prostate.
- The biopsy needle passes through the perineal skin to collect tissue samples.
- MRI-targeted samples may be taken from suspicious areas seen on prostate MRI.
- Systematic samples may also be taken from different areas of the prostate.
- The samples are sent to a pathology laboratory for analysis.
Most patients are able to go home the same day, although this depends on the anaesthetic used and individual recovery.
Is a Transperineal Prostate Biopsy Painful?
Most patients tolerate the procedure well. Local anaesthetic is used to numb the area, and some patients may have sedation or general anaesthetic depending on the biopsy plan.
You may feel pressure, brief discomfort, or mild soreness afterwards. Significant pain is uncommon, but comfort levels vary between individuals. The anaesthetic plan and expected recovery will be explained before the procedure.
After the Biopsy: Recovery and Possible Side Effects
Mild symptoms are common after prostate biopsy and usually improve with time.
These may include:
- blood in the urine for a short period
- blood in the semen, which may last longer
- mild bruising or soreness in the perineal area
- temporary discomfort when passing urine
- temporary difficulty passing urine in some patients
Although infection risk is lower with the transperineal route compared with the transrectal approach, medical advice should be sought if any of the following occur:
- fever or chills
- worsening pain
- inability to pass urine
- heavy bleeding
- feeling generally unwell after the procedure
Specific instructions on medication, activity, and when to seek urgent help are usually provided after the biopsy.
When Results Are Usually Available
Biopsy samples are reviewed by a pathologist. Results are usually available after several working days, depending on laboratory processing.
The biopsy report may show:
- no cancer detected
- benign prostate changes
- inflammation
- prostate cancer
- the Grade Group or Gleason score, if cancer is present
- how many biopsy cores contain cancer
- how much cancer is present in each involved core
- whether cancer was found in targeted or systematic samples
These details help guide the next step in care. Depending on the findings, options may include active surveillance, surgery, radiotherapy, focal therapy, hormone therapy, further imaging, or continued monitoring.
How Results Guide the Next Step
A prostate biopsy does more than confirm whether cancer is present. It also helps estimate the cancer’s risk level and supports treatment planning.
If prostate cancer is detected, the biopsy result is usually considered together with:
- PSA level and PSA trend
- prostate MRI findings
- cancer grade
- number of positive biopsy cores
- amount of cancer in each core
- whether the cancer appears localised or more advanced
- age and general health
- urinary symptoms
- sexual function priorities
- personal treatment preferences
This information helps determine whether the cancer may be suitable for active surveillance or whether treatment such as surgery, radiotherapy, focal therapy, or other approaches should be discussed.
Transperineal Biopsy vs Transrectal Biopsy
| Feature | Transperineal biopsy | Transrectal biopsy |
|---|---|---|
| Needle route | Through the perineal skin | Through the rectum |
| Infection risk | Generally lower because the bowel is avoided | Higher because the needle passes through the rectum |
| Access to anterior prostate | Often better | May be more limited |
| MRI-targeted biopsy | Can be performed | Can be performed |
| Systematic sampling | Can be performed | Can be performed |
| Anaesthesia | Local anaesthetic, sedation, or general anaesthetic depending on the case | Often local anaesthetic |
| Current role | Increasingly used in prostate cancer diagnosis | Traditional approach, still used in some settings |
The most suitable biopsy approach depends on the clinical indication, patient factors, available equipment, and the doctor’s assessment.
Before the Procedure: Preparation Advice
Preparation may vary depending on the planned biopsy approach and anaesthetic method.
The care team may advise about:
- whether blood-thinning medication needs to be adjusted
- whether a urine test is needed before the procedure
- whether antibiotics are required
- fasting instructions if sedation or general anaesthetic is planned
- arranging someone to accompany the patient home if sedation is used
- what symptoms to monitor after the biopsy
Blood thinners or regular medication should not be stopped unless specifically advised by a doctor.
Frequently Asked Questions
Does a raised PSA always mean I need a biopsy?
No. A raised PSA does not always mean prostate cancer. PSA can rise because of benign prostate enlargement, inflammation, infection, recent ejaculation, cycling, or recent procedures. A biopsy is usually considered after reviewing PSA trend, MRI findings, prostate size, examination findings, age, family history, and overall risk.
Is transperineal biopsy safer than transrectal biopsy?
The transperineal route avoids passing the biopsy needle through the rectum, which helps reduce infection risk. However, all procedures have possible risks. The benefits and possible side effects should be considered based on the individual clinical situation.
Can MRI replace a prostate biopsy?
MRI can help identify suspicious areas and guide biopsy decisions, but it cannot confirm prostate cancer by itself. A biopsy is needed when tissue diagnosis is required.
What is MRI-targeted prostate biopsy?
MRI-targeted biopsy means samples are taken from suspicious areas seen on prostate MRI. It may be combined with systematic biopsy to improve diagnostic accuracy.
Can a prostate biopsy miss cancer?
No biopsy can guarantee 100% detection. Combining MRI-targeted biopsy with systematic sampling can help improve the chance of detecting clinically significant prostate cancer.
Is the biopsy always performed using the same system?
Not necessarily. Transperineal prostate biopsy can be performed using different access systems and techniques. The biopsy method is selected according to the patient’s anatomy, MRI findings, clinical indication, and procedural planning.
Can the biopsy be done under local anaesthetic?
In selected patients, transperineal biopsy can be performed under local anaesthetic. Some patients may require sedation or general anaesthetic depending on comfort, prostate size, number of samples, medical factors, and procedural planning.
How long does it take to get biopsy results?
Results are usually available after several working days, depending on laboratory processing. The findings are reviewed to determine whether further monitoring, imaging, or treatment discussion is needed.
What happens if cancer is found?
If prostate cancer is detected, the biopsy report helps determine the grade and extent of cancer. Further tests may be recommended before discussing options such as active surveillance, surgery, radiotherapy, focal therapy, hormone therapy, or other treatments.
Concerned About Raised PSA or an Abnormal Prostate MRI?
If PSA, prostate MRI, or clinical findings suggest that prostate tissue sampling may be needed, a urology consultation can help clarify whether biopsy is appropriate and which biopsy approach may be suitable.
Appointments with Dr Roger Anthony Idi are arranged through Prince Court Medical Centre.