Prostate artery embolization (PAE) treats the urinary symptoms of an enlarged prostate (benign prostatic hyperplasia, BPH) by blocking the small arteries that feed the gland. Deprived of part of its blood supply, the prostate shrinks over the following weeks and pressure on the urethra eases. The entire treatment happens inside the blood vessels: a thin catheter enters through a puncture in the wrist or groin, and microscopic particles are injected into the prostatic arteries under X-ray guidance. No incision, no instrument through the urethra, no prostate tissue cut away — which is exactly why PAE has become one of the most asked-about alternatives to TURP surgery.
How PAE Works
An interventional radiologist navigates a microcatheter from the access point into the prostatic arteries — among the more technically demanding navigations in embolization, since these vessels are small and variable. Tiny calibrated particles are then injected until flow slows, on both sides where anatomy allows. Losing part of its arterial inflow, the gland undergoes controlled shrinkage (typically a volume reduction in the tens of percent over weeks to months), and urinary flow improves as the channel opens. The procedure typically takes one to two hours, and most patients go home the same day.
Who Is a Candidate?
PAE suits men with moderate-to-severe BPH symptoms — weak stream, straining, nocturia, incomplete emptying — who have not gotten enough relief from medication and either prefer to avoid surgery or are less-than-ideal surgical candidates. Large glands, patients on anticoagulation, and men who place high value on preserving ejaculatory function are groups where PAE is frequently discussed, because it avoids the retrograde ejaculation commonly associated with TURP. Candidacy is confirmed with imaging (CT angiography or MRI) of the prostatic arteries and standard urological evaluation to exclude other causes of symptoms — including prostate cancer, which PAE does not treat.
PAE vs TURP and Other Options
TURP — resecting prostate tissue through the urethra — remains the reference standard for symptom relief and durability. PAE's trade-off profile is different: no urethral instrumentation, no hospital-grade anesthesia requirement, faster return to normal life, and preservation of sexual function in most men, in exchange for somewhat less dramatic flow improvement and a higher likelihood of needing a repeat intervention over the years. Between them sit laser therapies and minimally invasive implants. The right choice depends on gland size, anatomy, symptom severity, and personal priorities — a decision made jointly by urologist and interventional radiologist.
Recovery and "Post-PAE Syndrome"
Most men return to routine activity within days. In the first week, a self-limited cluster called post-embolization syndrome is common: pelvic ache or burning, urinary frequency or urgency, mild fever, and fatigue — managed with anti-inflammatories and fluids. Symptom improvement is not instant; it builds as the gland shrinks, with most men noticing meaningful change between two weeks and three months. Red flags that warrant a call: fever above 38.5 °C, inability to urinate, or blood in urine beyond light tinging.
The Technology Behind PAE
PAE is a superselective embolization: success depends on reaching the right vessel and delivering the right agent precisely. INVAMED's embolization portfolio covers the toolchain — microdelivery embolization catheters for navigating fine, tortuous arteries and calibrated embolic agents engineered for controlled, targeted occlusion — the same platform used across fibroid, hemorrhoidal, and genicular embolization.
Frequently Asked Questions
Is prostate artery embolization painful?
The procedure is done under local anesthesia with sedation; afterwards, pelvic discomfort for a few days is typical and controlled with ordinary analgesics.
How long does PAE last?
Improvement persists for years in most men; a minority eventually need repeat embolization or surgery. Durability is somewhat lower than TURP — the accepted trade for its gentleness.
Does PAE affect sexual function?
PAE preserves ejaculatory and erectile function in the large majority of men — one of its main attractions compared with TURP.
Does PAE treat prostate cancer?
No. PAE treats benign enlargement only; evaluation before the procedure includes ruling out cancer as the cause of symptoms.
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This article is for education only and is not medical advice, diagnosis, or treatment — always consult a qualified physician about your situation. Device availability and regulatory status vary by country; contact INVAMED or your authorized local distributor for current regulatory information applicable to your region.