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Varicocele Embolization
A minimally invasive, outpatient treatment for varicocele that relieves pain and may improve fertility—without surgical incisions. Most patients go home the same day, usually about 1 hour after the procedure.
What is a varicocele?
A varicocele is an enlargement of veins within the scrotum (similar to varicose veins in the leg). It can cause a heavy or aching sensation, visible or palpable veins, and may affect fertility by altering testicular temperature and blood flow.
- Pain, heaviness, or discomfort
- Cosmetic concern from enlarged veins
- Abnormal semen parameters and impaired fertility potential
Embolization treats the problem from the inside using a catheter and imaging guidance—no surgical incision, and recovery is quick.
Same-day procedure with discharge usually ~1 hour after completion; most patients resume light activity the next day.
Why varicoceles occur
A varicocele develops when blood flows backward (reflux) through the gonadal veins due to incompetent one-way valves. Instead of draining smoothly toward the heart, blood pools in the scrotal veins under the influence of gravity.
This is more common in the left gonadal vein, which runs in a vertical orientation directly into the renal vein, making it more susceptible to reflux. In contrast, the right gonadal vein enters at an angle, reducing the downward vector of gravity and lowering the chance of reflux.
For this reason, varicocele embolization generally targets the left gonadal vein. However, during the procedure, real-time venography is performed. If the left vein appears non-contributory or the right vein shows significant reflux, the right gonadal vein may be treated instead.
In a small percentage of cases, optimal relief may require staged embolization of both left and right gonadal veins, performed as separate procedures.
How the procedure works
Through a tiny puncture (often the neck vein), a thin catheter is guided to the gonadal vein and the refluxing veins are mapped.
Coils or plugs are placed to close abnormal veins and redirect blood into healthy pathways.
Same-day discharge (usually ~1 hour). Most patients return to activity within 24 hours.
Benefits of embolization
- Relieves pain and heaviness from varicocele
- May improve semen parameters and fertility potential
- Lower complication rate vs. surgical varicocelectomy
- Same-day procedure and rapid recovery
Effectiveness
Varicocele embolization is a proven, durable treatment with high technical success and symptom relief. Many patients also see improvement in semen parameters as part of a comprehensive fertility plan.
- Technical success in the vast majority of cases
- Rapid return to non-strenuous activity (often next day)
- Follow-up tailored to symptoms and fertility goals
Risks
Complications are uncommon. Potential risks include a small risk of infection or bleeding at the access site, temporary discomfort in the abdomen or groin, and rare recurrence if new veins develop.
- We review medications (including blood thinners) before your procedure
Who is a candidate?
- Painful or symptomatic varicocele
- Infertility associated with abnormal semen parameters
- Recurrent varicocele after prior surgery
FAQ
Ready to discuss varicocele embolization?
Dr. Michael J. Drabkin is among the highest-volume interventional radiologists in the United States for embolization procedures, with extensive experience across prostate, uterine, and varicocele treatments.