Varicocele and Male Infertility: What Urologists Assess — and Whether Treatment Improves Conception

Varicocele—a dilation of veins in the scrotum—is a common finding in men and one of the most treatable causes of infertility. About 15% of all men and up to 40% of infertile men have a varicocele. If you're facing challenges conceiving, understanding how urologists evaluate varicocele and whether correcting it can boost fertility is key.

What Is a Varicocele?

• A varicocele occurs when veins in the pampiniform plexus (a network of vessels in the spermatic cord) become enlarged or twisted.
• It's similar to varicose veins that appear in the legs.
• Most varicoceles develop on the left side due to anatomical factors; up to 10% of men have bilateral (both sides) varicoceles.

Varicoceles may be asymptomatic or cause mild scrotal discomfort, especially after standing or physical activity. Importantly, they can raise testicular temperature, impair blood flow and oxygen delivery, and lead to oxidative stress—factors that may damage sperm production.

How Urologists Evaluate Varicocele-Related Infertility

When men with varicocele seek fertility evaluation, urologists take a systematic approach:

1. Medical History and Physical Exam

   • Ask about fertility history, testicular pain or heaviness, past surgeries and lifestyle factors (smoking, heat exposure).
   • Perform a gentle scrotal exam—often with the patient standing—to feel for "bag of worms"–type veins.

2. Semen Analysis

   • The cornerstone of infertility workup.
   • Measures sperm concentration, motility (movement), morphology (shape) and total sperm count.
   • Ideally, two separate samples are tested at least two weeks apart.

3. Scrotal Ultrasound

   • Confirms varicocele and grades its severity (grades I–III based on vein diameter and reflux).
   • Helps identify other scrotal conditions, such as hydrocele or testicular tumors.

4. Hormone Testing

   • Evaluates testosterone, follicle-stimulating hormone (FSH) and luteinizing hormone (LH).
   • Identifies hormonal imbalances that can affect sperm production.

5. Partner Evaluation

   • Since fertility involves two people, a normal female partner evaluation ensures no other barriers to conception.

When urologists diagnose a clinically significant varicocele alongside abnormal semen parameters and no other female-factor issues, they discuss treatment options.

When Is Treatment Recommended?

Guidelines from leading urology associations suggest treating varicoceles in men who:

• Have a palpable (grade II or III) varicocele.
• Show one or more abnormal semen analysis results.
• Have a female partner with normal fertility or correctable fertility issues.
• Are motivated to pursue conception, whether naturally or via assisted reproduction.

If you're experiencing any of these symptoms or simply want to understand your risk better, you can use Ubie's free AI-powered Varicocele symptom checker for a personalized assessment in just a few minutes.

Treatment Options

1. Microsurgical Varicocelectomy

   • Gold standard: low recurrence and complication rates.
   • Small incision above the inguinal canal; uses an operating microscope to ligate dilated veins while preserving arteries and lymphatics.

2. Laparoscopic or Open Surgery

   • Minimally invasive laparoscopy or a traditional open approach.
   • Generally effective but may carry a slightly higher risk of hydrocele (fluid buildup).

3. Percutaneous Embolization

   • Interventional radiology procedure.
   • A catheter is threaded into the spermatic vein, and coils or a sclerosant are used to block blood flow.
   • No surgical incision; quicker recovery, but success depends on the operator's experience.

Does Treatment Improve Fertility?

Improvements in Semen Parameters

• Meta-analyses show that 60–75% of men experience improved sperm count, motility and morphology after varicocele repair.
• Average increases range from 50% to 75% for total motile sperm count.

Natural Pregnancy Rates

• After treatment, spontaneous pregnancy rates in couples range from 30% to 50% over 6–12 months.
• Factors affecting outcomes:
  • Severity of varicocele pre-treatment.
  • Baseline semen quality.
  • Woman's age and reproductive health.
  • Time elapsed since repair (improvements often appear 3–6 months after surgery).

Assisted Reproductive Technology (ART)

• Men with persistent semen abnormalities may still proceed to IVF or ICSI.
• Upgrading semen parameters through varicocele repair can reduce the need for invasive ART, lower costs and improve outcomes.

Potential Risks and Considerations

Varicocele repair is generally safe, but men should understand possible side effects:

• Hydrocele formation (2–10% of cases).
• Varicocele recurrence (about 1–5% after microsurgery; higher with other techniques).
• Scrotal swelling, bruising or mild pain post-procedure.
• Rare infection or injury to adjacent structures.

Your urologist will discuss these risks and choose the approach best suited to your anatomy and fertility goals.

Lifestyle and Supportive Measures

While varicocele repair addresses the mechanical issue, healthy lifestyle choices further support fertility:

• Maintain a balanced diet rich in antioxidants (fruits, vegetables, whole grains).
• Avoid excessive heat (hot tubs, laptops on the lap).
• Limit smoking and heavy alcohol use.
• Manage stress; consider mindfulness or gentle exercise.
• Take supplements only under medical supervision (e.g., vitamin C, zinc, CoQ10).

When to Speak to a Doctor

Prompt evaluation is key if you notice:

• A lump or swelling in the scrotum.
• Dull ache or heaviness in one or both testicles.
• Difficulty conceiving after one year of unprotected intercourse (or six months if the female partner is over 35).

If you experience sudden, severe scrotal pain, fever or signs of infection, seek immediate medical care. Always speak to your doctor about any serious or persistent symptoms.

Key Takeaways

• Varicocele is a common, often treatable cause of infertility in men.
• Urologists assess varicocele through history, exam, ultrasound, semen analysis and hormone testing.
• Microsurgical varicocelectomy offers the best balance of effectiveness and low complication rates.
• Treatment can significantly improve sperm quality and natural pregnancy rates in up to half of couples.
• Lifestyle changes complement surgical repair to optimize fertility.

Before your appointment, consider checking your symptoms with Ubie's AI-powered Varicocele assessment tool to help you have a more informed conversation with your healthcare provider. Then, if you suspect a varicocele or have fertility concerns, speak to a doctor to explore your options and address any serious issues.