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If you have just been told you have localized prostate cancer, you are probably weighing two uncomfortable extremes: remove or irradiate the whole gland and accept the well-known risks to erections and bladder control, or watch and wait and live with the worry. Focal high-intensity focused ultrasound (HIFU) sits between those poles. Instead of treating the entire prostate, it destroys only the part of the gland that holds the cancer, leaving the rest, and the nerves running alongside it, intact.
This guide explains how focal HIFU actually works, which men it suits and which it does not, what published outcomes really show (with the numbers, not just adjectives), what it costs in Bangkok compared with the US and UK, how recovery unfolds week by week, and the risks worth taking seriously. It is written for men making a real decision, so it hedges where the evidence is still maturing. None of it replaces a consultation: HIFU can only be recommended after a urologist reviews your MRI, biopsy and PSA in person.
What focal HIFU is, in plain terms
HIFU uses focused ultrasound, the same physics as a magnifying glass concentrating sunlight, except the energy is sound, not light, and the target is a few millimetres of cancerous prostate tissue. A probe placed in the rectum emits ultrasound beams that converge on a precise point. At that focal point the tissue heats rapidly to roughly 80-90°C, which coagulates and destroys the cancer cells. Tissue a few millimetres away stays cool and undamaged.
"Focal" is the key word. Whole-gland HIFU treats the entire prostate; focal HIFU treats only the cancer-bearing zone (sometimes a single lesion, sometimes one half of the gland, which is called hemi-ablation). By sparing the opposite side, the urinary sphincter and at least one neurovascular bundle, focal therapy aims to control the cancer while protecting the functions men care about most.
It is worth being clear about what HIFU is not. It is not radiation, so there is no cumulative radiation dose and no scatter to the bladder or rectum. It is not surgery, so there are no incisions and the prostate is not removed. And it is not a substitute for cancer that has spread or that is spread diffusely through the gland; in those situations whole-gland treatment remains the standard.
How the procedure works, step by step
Mapping. A multiparametric MRI identifies the lesion, and targeted biopsies confirm its location, grade (Gleason score / ISUP grade group) and extent. Accurate mapping is what makes focal therapy possible, so this stage matters as much as the treatment itself.
Anaesthesia. The procedure is done under spinal or general anaesthesia. You are not awake for it.
Probe placement. A slim ultrasound probe is positioned in the rectum. Nothing is cut.
Ablation. Under real-time ultrasound guidance, the system delivers focused energy to the planned zone, building up the treated area point by point with a deliberate safety margin around the tumour.
Monitoring. The urologist watches the tissue change in real time and adjusts as needed. Treatment typically takes one to three hours depending on lesion size.
Catheter and recovery. A urinary catheter (urethral or suprapubic) is placed because the prostate swells for a few days. Most men go home the same day or after one night.
Who focal HIFU is for
Focal HIFU is best suited to men who fit a fairly specific profile. The strongest candidates generally have:
Localized disease confined to the prostate, with no evidence of spread beyond the capsule or to lymph nodes.
Low- or favorable-intermediate-risk cancer. In practice this often means an ISUP grade group 1-2 (Gleason 3+3 or 3+4), a PSA usually under 15-20 ng/mL, and limited positive cores. Bangkok hospitals offering focal therapy describe favorable intermediate risk as PSA 10-20, grade 2-3, and fewer than half the biopsies positive, which is consistent with international practice.
An MRI-visible lesion that can be targeted. If the cancer cannot be seen and localized, it cannot be focally treated with confidence.
A prostate of suitable size and anatomy, typically under about 40-50 grams, without large calcifications blocking the ultrasound path.
A priority on preserving erections and continence, often men who are still sexually active and want to avoid the higher functional cost of surgery or radiation.
Men considering focal therapy should also be willing to commit to follow-up. The untreated prostate remains, so PSA testing and a follow-up MRI (often a biopsy at around 12 months) are part of the deal.
Who it is NOT for, and contraindications
Focal HIFU is the wrong tool for several groups, and a responsible clinic will say so:
High-risk or unfavorable-intermediate-risk cancer (for example ISUP grade group 4-5, or extensive grade 3 disease). These cancers behave more aggressively and are more likely to recur after focal treatment, so whole-gland therapy is usually preferred.
Diffuse or multifocal cancer spread across both sides of the gland, where there is no discrete target to ablate.
Cancer that has spread beyond the prostate (extracapsular extension, seminal vesicle involvement, nodal or distant metastasis).
Anatomical barriers: a very large gland, heavy prostate calcification, or prior rectal surgery that prevents safe probe placement. Absence of a rectum (for example after abdominoperineal resection) is a hard contraindication for the transrectal approach.
Active urinary or rectal infection, or significant untreated lower-urinary-tract obstruction, which may need addressing first.
This is a judgement call that depends on your imaging and pathology, which is exactly why focal HIFU requires a specialist assessment and cannot be prescribed online or from this article.
What the results actually show
Focal therapy is newer than surgery and radiation, so very long-term (10-15 year) survival data are still accumulating. That caveat is important and honest. What the medium-term published series do show is encouraging, particularly on function.
Cancer control. In a UK multicentre series of 625 men treated with focal HIFU and followed for a median of nearly five years, failure-free survival was 88% at 5 years, metastasis-free survival 98%, overall survival 99%, and cancer-specific survival 100% (Guillaumier 2018). A larger multi-institution analysis of 1,379 men reported 7-year failure-free survival of 69% overall (68% for intermediate-risk and 65% for high-risk disease), underlining that results depend heavily on patient selection (Reddy 2022).
Continence. A systematic review of 20 studies and more than 4,000 men found roughly 90-98% of patients were fully pad-free at 6 months, with 93-97% continent at 12 months (Bakavičius 2022). In the 625-man series, 98% were pad-free and none needed more than one pad a day (Guillaumier 2018).
Erectile function. The same systematic review reported that 69-80% of men retained erections firm enough for intercourse at 6 months, with rates broadly stable thereafter (Bakavičius 2022). Real-world registries show some decline over time, so a realistic expectation is that the majority of well-selected men keep useful function, but not all, and not always at baseline level.
Retreatment. Because a residual prostate remains, some men need a second treatment. Up to about 1 in 5 undergo a repeat focal HIFU, and surgery or radiation remain available as fallback options if focal therapy does not control the disease.
Put simply: for the right candidate, focal HIFU offers cancer control in the medium term that is reasonable, and functional preservation that is generally better than whole-gland surgery or radiation. The trade-off is less mature long-term data and a meaningful chance of needing further treatment.
Pricing in Bangkok, and how it compares
Focal HIFU for prostate cancer is a hospital-based oncology procedure (not the cosmetic "HIFU facial" that shares the name and costs a fraction as much). Pricing depends on the device, anaesthesia, hospital stay, imaging and the surgeon. The figures below are indicative ranges for Bangkok; confirm the exact quote at consultation, because it is built around your specific case.
Item | Bangkok (THB) | Bangkok (USD approx.) | Typical US/UK private price |
Focal HIFU procedure (single session, all-in) | 300,000 - 650,000 | 9,400 - 20,300 | US 15,000 - 26,000 USD; UK 14,000 - 19,000 GBP |
Pre-treatment mpMRI | 15,000 - 35,000 | 470 - 1,090 | Often billed separately |
Targeted / mapping biopsy | 40,000 - 90,000 | 1,250 - 2,800 | Often billed separately |
Follow-up PSA + MRI (per cycle) | 15,000 - 40,000 | 470 - 1,250 | Ongoing |
USD figures use an indicative rate near 32 THB to 1 USD and will move with exchange rates. The headline point is the savings column: the all-in Bangkok procedure commonly lands well below US out-of-pocket pricing (which runs roughly USD 15,000-25,000 when uninsured) and below typical UK private fees, while being delivered in JCI-accredited international hospitals. For many men travelling for treatment, the procedure plus imaging plus a short stay still totals less than the procedure alone would cost privately at home.
What drives the cost
Device and platform. Newer robotic HIFU systems and real-time MRI-fusion add cost.
Lesion size and treatment time. A larger ablation zone means a longer session.
Hospital tier and room category. International private hospitals price above smaller centres.
Anaesthesia type and length of stay. Day-case versus one night changes the bill.
Diagnostics. mpMRI and targeted biopsy may be bundled or charged separately.
Surgeon experience. High-volume focal-therapy specialists may command higher fees, and that experience is worth paying for.
How focal HIFU compares with the alternatives
Option | What it treats | Erection preservation | Continence | Long-term cancer data | Main downside |
Focal HIFU | Cancer zone only | Generally high (~70-85%) | Very high (~95-98%) | Medium-term, maturing | Residual gland, possible retreatment |
Radical prostatectomy | Whole gland removed | Lower; varies with nerve-sparing | Lower early; usually recovers | Decades of data | Surgery, longer recovery |
Whole-gland radiation | Whole gland irradiated | Declines over years | Generally preserved early | Decades of data | Bowel/bladder irritation, second-cancer risk |
Active surveillance | Nothing (monitoring) | Preserved | Preserved | N/A (no treatment) | Anxiety, risk of progression |
Focal cryotherapy | Cancer zone (freezing) | Variable | High | Medium-term | Similar focal trade-offs |
There is no single best option for every man. Surgery and radiation have the longest track record; active surveillance avoids treatment harms but not the worry; focal HIFU and focal cryotherapy aim to preserve function at the cost of less mature long-term data. The right choice depends on your cancer's grade and location, your age, and how you personally weigh function against the reassurance of whole-gland treatment.
Recovery, week by week
Recovery from focal HIFU is generally quicker than from surgery, but it is not instantaneous and the catheter period is real.
Day 0: Procedure under anaesthesia. Day case or one night in hospital. A urinary catheter is in place.
Days 1-3: Home. Expect some pelvic ache, blood-tinged urine and a sense of urinary urgency as the prostate swells. Drink fluids; avoid strenuous activity.
Days 7-14: The catheter is removed once swelling settles, often around a week to ten days. Many men feel close to normal for desk work and light activity at this point.
Weeks 2-4: Urinary symptoms (frequency, weaker stream, occasional discomfort) settle progressively. Return to most normal activities.
Weeks 4-6: Sexual activity usually resumes. Erections may be softer at first and can take weeks to months to reach their new baseline; medication can help during recovery.
3-12 months: Follow-up PSA, repeat MRI and often a biopsy around 12 months confirm whether the treated area is clear. This surveillance continues long term.
Recovery varies between individuals. Older men, those with pre-existing urinary symptoms, or those with larger treatment zones may take longer.
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Risks and side effects
Most side effects of focal HIFU are temporary and minor, which is much of its appeal, but no prostate treatment is risk-free.
Common, usually temporary:
Urinary urgency, frequency or a weaker stream for a few weeks.
Blood in the urine or semen, which settles.
Mild pelvic or perineal discomfort.
Temporary erectile changes, generally milder and shorter-lived than after whole-gland treatment.
Less common:
Urinary tract infection (reported in roughly 5-18% of cases in pooled data, around 8-9% in the large 625-man series).
Urinary retention needing a longer catheter.
Urethral stricture or scar tissue affecting flow.
Rare but serious, seek urgent care:
Rectourethral fistula (an abnormal connection between rectum and urethra), reported in roughly 0.3-3% of cases. Warning signs include passing air or stool in the urine, or urine leaking from the rectum.
Sepsis or severe infection: high fever, shaking chills, feeling very unwell.
Inability to pass urine at all after the catheter is removed, or heavy bleeding with clots.
If any of these red-flag symptoms occur, contact your treating hospital or attend an emergency department promptly rather than waiting for a scheduled appointment.
Choosing a safe clinic, and red flags to avoid
Focal therapy outcomes depend heavily on case selection and operator experience, so where you have it done matters. Look for:
A urologist who treats prostate cancer specifically and performs focal therapy regularly, not as an occasional add-on.
Multiparametric MRI and targeted biopsy done properly before any treatment, plus a clear plan for post-treatment surveillance.
Honest candidacy assessment, including a willingness to tell you that focal HIFU is not right for you if your cancer is high-risk or diffuse.
Accreditation and multidisciplinary input (urology, radiology, pathology, oncology), which JCI-accredited Bangkok hospitals typically provide.
Transparent, itemised pricing that separates the procedure from imaging and follow-up.
Treat these as warning signs: a clinic that promises a "cure" without reviewing your MRI and biopsy; pressure to decide immediately; no mention of follow-up or the possibility of retreatment; pricing that looks suspiciously low and turns out to be a cosmetic skin HIFU, not prostate ablation; or reluctance to discuss alternatives such as surgery, radiation or surveillance. A trustworthy team presents focal HIFU as one option among several and helps you compare them.
Book a consultation in Bangkok
Whether focal HIFU is right for you depends entirely on your imaging, biopsy and PSA, and on your own priorities. The only way to know is a proper assessment. If you have been diagnosed with localized prostate cancer and want to explore a treatment that aims to control the cancer while protecting erections and continence, book a consultation with our specialists. We will review your case, explain whether you are a candidate, walk through the alternatives honestly, and give you a personalised plan and quote. Focal HIFU is a medical procedure that requires a specialist consultation and prescription; it cannot be arranged without one.
Frequently Asked Questions
Is focal HIFU a cure for prostate cancer?
For carefully selected men with localized, low- or favorable-intermediate-risk disease, focal HIFU controls the cancer well in the medium term, with 5-year failure-free survival around 88 percent and cancer-specific survival close to 100 percent in published series. It is not guaranteed to be curative, very long-term data are still maturing, and because the rest of the prostate remains, some men later need a second focal treatment or other therapy. Ongoing PSA and MRI follow-up is essential.
Will I still be able to have erections and stay continent after HIFU?
That is the main reason men choose focal HIFU. Across studies, roughly 95-98 percent of men remain pad-free, and about 70-85 percent of well-selected men keep erections firm enough for intercourse. These rates are generally better than after whole-gland surgery or radiation, but they are not universal, and erections may be softer for some weeks to months during recovery.
How much does focal HIFU for prostate cancer cost in Bangkok?
Indicatively, the all-in procedure runs roughly THB 300,000-650,000 (about USD 9,400-20,300 at around 32 THB per USD), with mpMRI and targeted biopsy often billed separately. That is commonly below US out-of-pocket pricing (which runs roughly USD 15,000-25,000 uninsured) and typical UK private fees. Figures are indicative and exchange-rate dependent; confirm the exact quote at consultation, since it is built around your specific case.
Who is not a good candidate for focal HIFU?
Focal HIFU is generally unsuitable for high-risk or unfavorable-intermediate-risk cancer, cancer spread diffusely across both sides of the gland, disease that has extended beyond the prostate, a very large or heavily calcified gland, or men without a rectum (for the transrectal approach). Whether you qualify can only be judged from your MRI, biopsy and PSA by a specialist.
How is focal HIFU different from whole-gland HIFU?
Whole-gland HIFU treats the entire prostate, like surgery or radiation but with ultrasound. Focal HIFU treats only the cancer-bearing zone (sometimes one lesion, sometimes one half of the gland), sparing the opposite side, the urinary sphincter and at least one nerve bundle. This focal approach is what preserves erectile and urinary function but leaves a residual prostate that needs monitoring.
How long is recovery, and how long is the catheter in?
Most men go home the same day or after one night. A urinary catheter stays in for roughly 7-14 days while prostate swelling settles. Desk work is usually fine within one to two weeks, sexual activity typically resumes around four to six weeks, and urinary symptoms ease over the first month. Recovery varies with age, prostate size and treatment extent.
What happens if the cancer comes back after focal HIFU?
Salvage options remain open. Depending on the findings, you may have a repeat focal HIFU, or move to whole-gland treatment such as radical prostatectomy or radiation. Up to about one in five men undergo a second focal treatment. This is why structured follow-up with PSA, MRI and sometimes a biopsy around 12 months is built into the plan.
Is focal HIFU covered by insurance?
Coverage varies widely. In the US, HIFU for prostate cancer is often not covered, though some patients obtain partial reimbursement on appeal. In the UK, several private insurers cover focal therapy when medically appropriate. For treatment in Bangkok, check with both your insurer and the hospital's international patient office, and ask for an itemised quote you can submit for any potential reimbursement.
What are the most serious risks I should watch for?
Serious complications are uncommon. The one to know about is a rectourethral fistula (an abnormal connection between rectum and urethra), reported in roughly 0.3-3 percent of cases; warning signs include passing air or stool in the urine. Also seek urgent care for high fever with chills (possible infection), heavy bleeding with clots, or complete inability to pass urine after the catheter is removed.
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