Prostate Artery Embolization (PAE): A Minimally Invasive Treatment for Enlarged Prostate

Benign prostatic hyperplasia (BPH), commonly known as an enlarged prostate, affects millions of men as they age. Although the condition is not cancerous, it can cause urinary symptoms that interfere with sleep, work, and daily activities.

For many years, surgery was the primary treatment option when medications were no longer effective. Today, advances in interventional radiology offer a minimally invasive alternative known as prostate artery embolization (PAE).

PAE is an image-guided procedure that reduces blood flow to the prostate, allowing it to shrink naturally over time and relieve urinary symptoms—without traditional surgery or general anesthesia.

For many patients, this innovative approach provides effective symptom relief with less downtime, fewer risks, and faster recovery compared with surgical treatment.

Understanding Enlarged Prostate (BPH)

The prostate gland sits just below the bladder and surrounds the urethra, the tube that carries urine out of the body.

As men age, the prostate commonly enlarges. This condition is called benign prostatic hyperplasia (BPH).

When the prostate grows larger, it can compress the urethra and restrict the normal flow of urine from the bladder.

BPH is extremely common:

• About 50% of men by age 60 develop prostate enlargement
• Up to 90% of men by age 85 have some degree of BPH

While the condition itself is not dangerous, the symptoms can significantly impact quality of life.

Common Symptoms of BPH

Men with an enlarged prostate often develop lower urinary tract symptoms (LUTS) caused by obstruction of urine flow.

Common symptoms include:

• Frequent urination during the day
• Waking up multiple times at night to urinate (nocturia)
• Weak urine stream
• Difficulty starting urination
• Urinary urgency
• Feeling that the bladder does not fully empty
• Intermittent urine flow
• Urinary retention in severe cases

These symptoms occur because the enlarged prostate compresses the urethra and interferes with normal bladder emptying.

When Treatment Is Needed

Treatment for BPH typically begins with medications designed to improve urinary flow or reduce prostate size.
Common medications include:

• Alpha blockers
• 5-alpha reductase inhibitors

While medications can help many patients, some men experience persistent symptoms or medication side effects, such as dizziness, fatigue, or sexual dysfunction.

When medications are no longer effective, procedural treatment may be recommended.

Historically, this meant prostate surgery. Today, minimally invasive procedures like prostate artery embolization provide another option.

What Is Prostate Artery Embolization?

Prostate artery embolization (PAE) is a minimally invasive treatment for enlarged prostate performed by an interventional radiologist.

Instead of removing prostate tissue surgically, PAE works by reducing blood supply to the prostate gland.

During the procedure, tiny particles are injected into the arteries supplying the prostate. This reduces blood flow to the gland, causing it to gradually shrink.

As the prostate shrinks, pressure on the urethra decreases and urinary symptoms improve.

How the PAE Procedure Works

Prostate artery embolization uses advanced imaging technology and tiny catheters to treat the prostate without surgery.

Step 1: Conscious Sedation

Patients receive conscious sedation, which allows them to remain relaxed and comfortable without requiring general anesthesia.

Step 2: Catheter Placement

A small catheter is inserted through a tiny puncture in an artery, usually in the wrist or groin.

Step 3: Image-Guided Navigation

Using real-time X-ray imaging, the physician carefully guides the catheter to the arteries supplying the prostate.

Step 4: Embolization

Microscopic particles are injected into these arteries to block blood flow to the prostate.

Step 5: Prostate Shrinkage

Over time, the prostate shrinks, relieving pressure on the urethra and improving urinary symptoms.
The procedure typically takes 1–2 hours, and most patients go home the same day.

Who Is a Good Candidate for PAE?

Prostate artery embolization may be an excellent option for men who:

• Have moderate to severe urinary symptoms from BPH
• Have not had adequate relief from medications
• Prefer to avoid surgery
• Have large prostate glands
• Have medical conditions that increase surgical risk
• Have urinary retention due to prostate enlargement

Because PAE does not require general anesthesia, it can also be a good option for patients with heart disease, lung disease, or other health conditions that increase surgical risk.

Risks and Limitations of Surgical Treatment for BPH

Traditional surgical procedures can provide effective relief for prostate enlargement, but patients should understand the potential risks and side effects.

Bleeding

Procedures such as transurethral resection of the prostate (TURP) involve removing prostate tissue and may cause bleeding during or after surgery. Some patients require bladder irrigation or, rarely, blood transfusion.

Retrograde Ejaculation

A common side effect of prostate surgery is retrograde ejaculation, in which semen flows backward into the bladder instead of exiting the body.

Erectile Dysfunction

Although uncommon, some men may experience changes in erectile function after surgery.

Urinary Incontinence

In rare cases, surgery may affect the urinary sphincter and lead to temporary or persistent urinary leakage.

Hospitalization and Recovery

Many surgical procedures require:

• Hospital stays
• Postoperative catheter placement
• Recovery periods lasting several weeks

Anesthesia Risks

Traditional prostate surgery usually requires general or spinal anesthesia, which may carry additional risks for older patients or those with other medical conditions.

Advantages of Prostate Artery Embolization

Compared with traditional surgery, prostate artery embolization offers several benefits.

Minimally Invasive Treatment

PAE is performed through a tiny catheter rather than surgical instruments.

No Surgical Incisions

The procedure requires only a tiny pinpoint puncture in the skin.

Conscious Sedation Instead of General Anesthesia

This significantly reduces anesthesia-related risks.

Faster Recovery

Most patients return to normal activities within a few days.

Lower Risk of Certain Side Effects

Because prostate tissue is not surgically removed, PAE may reduce the risk of sexual side effects seen with some surgical procedures.

Outpatient Procedure

Most patients go home the same day.

Comparing PAE With Other BPH Treatments

Patients often want to understand how prostate artery embolization compares with other treatment options.

 

This comparison highlights why many patients are interested in minimally invasive options like PAE, especially when they want to avoid surgery or anesthesia risks.

Clinical Evidence Supporting PAE

A growing body of research supports the safety and effectiveness of prostate artery embolization.

In a large clinical study involving over 1,000 patients, urinary symptom scores improved significantly after treatment. The median International Prostate Symptom Score (IPSS) improved from 23 before treatment to approximately 6 after treatment.

Studies also show that PAE can:

• Improve urinary flow
• Reduce prostate size
• Improve quality of life
• Provide durable symptom relief

Recovery After Prostate Artery Embolization

Recovery after PAE is typically quick and straightforward.
Most patients experience:

• Same-day discharge
• Mild pelvic discomfort for a few days
• Gradual improvement in urinary symptoms over several weeks

Maximum improvement typically occurs over one to three months.

Take the Next Step Toward Relief

If you are experiencing symptoms of an enlarged prostate, minimally invasive treatments like prostate artery embolization may offer lasting relief.

Our team works closely with urology specialists to evaluate each patient and determine the most appropriate treatment approach.

Schedule a consultation today to learn whether prostate artery embolization may be right for you.