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PESA (Percutaneous Epididymal Sperm Aspiration)

PESA (Percutaneous Epididymal Sperm Aspiration) in Bangalore

Percutaneous Epididymal Sperm Aspiration, commonly known as PESA, is a minimally invasive procedure used to retrieve sperm directly from the epididymis — a coiled tube situated behind each testicle that stores and transports sperm before ejaculation. PESA is primarily used for men diagnosed with obstructive azoospermia, a condition in which sperm production is normal but a blockage in the reproductive tract prevents sperm from reaching the ejaculate.

Because PESA uses a fine needle rather than surgical incisions, it is one of the least invasive sperm retrieval techniques available, and is typically completed in under 30 minutes. The sperm collected is then used with assisted reproductive technologies such as In Vitro Fertilization (IVF) or Intracytoplasmic Sperm Injection (ICSI) to help couples conceive.

Who Is a Candidate for PESA?
PESA is generally recommended for men with obstructive azoospermia, where sperm production in the testicles is normal, but sperm cannot travel through the reproductive tract due to a blockage. Common candidates include men who have:

  • Undergone a previous vasectomy and are not proceeding with (or have not had success with) vasectomy reversal

  • Congenital absence of the vas deferens, often linked to genetic conditions

  • Scarring or blockage in the epididymis or vas deferens from prior infection, surgery, or trauma

  • Failed attempts at surgical reversal of a prior sterilisation procedure

A fertility specialist typically confirms obstructive azoospermia through semen analysis, hormone testing, and a physical examination before recommending PESA, since it is not effective for men with non-obstructive azoospermia (where the issue lies in sperm production itself).

How the PESA Procedure Works

PESA is usually performed under local anesthesia on an outpatient basis, meaning patients can go home the same day without the need for general anesthesia or a surgical incision.

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Step 1 — Local Anesthesia: The scrotal area is numbed with a local anesthetic injection to minimise discomfort.
 

Step 2 — Needle Aspiration: A fine needle is passed through the skin of the scrotum directly into the epididymis. Gentle suction is applied to draw out a small amount of fluid containing sperm.
 

Step 3 — Immediate Microscopic Examination: The aspirated fluid is examined under a microscope by an embryologist to check for the presence of motile, viable sperm.
 

Step 4 — Repeat Aspiration if Needed: If insufficient sperm is found on the first attempt, the process may be repeated at a different site or on the opposite testicle.
 

Step 5 — Sperm Use or Storage: Once viable sperm is identified, it can be used fresh for an IVF/ICSI cycle already planned with the female partner, or cryopreserved for future use.
 

Because no incision is required, recovery is typically quicker and more comfortable compared to surgical sperm retrieval techniques.

PESA vs Other Sperm Retrieval Techniques

Understanding how PESA compares to other retrieval methods helps clarify why a specialist may recommend one technique over another:

  • PESA targets the epididymis with a needle — ideal for obstructive causes where sperm production is normal
     

  • TESA (Testicular Sperm Aspiration) uses a needle to draw sperm directly from testicular tissue, useful when epididymal sperm is unavailable or of poor quality
     

  • Micro-TESE involves a surgical incision and microscope-guided tissue sampling, typically reserved for non-obstructive azoospermia where sperm production itself is impaired
     

Choosing between these methods depends on the underlying cause of infertility, prior surgical history, and findings from diagnostic testing.

Recovery After PESA
Because PESA is minimally invasive and needle-based, recovery is generally fast:
 

  • Mild soreness or slight bruising at the aspiration site is common for a day or two

  • Most men return to normal activities within 24–48 hours

  • Strenuous exercise and heavy lifting are usually avoided for a few days

  • Over-the-counter pain relief is typically sufficient for any discomfort
     

Patients are advised to wear supportive underwear for a couple of days and to follow any specific post-procedure instructions given by their surgeon.

Success Rates and Influencing Factors

PESA has good success rates for retrieving usable sperm in men with confirmed obstructive azoospermia, since sperm production itself is not impaired in these cases. However, overall pregnancy outcomes depend on multiple factors:
 

  • Sperm motility and quality retrieved during the procedure

  • The age and ovarian reserve of the female partner

  • The technique and experience of the fertility team

  • Whether fresh or frozen sperm is used in the subsequent IVF/ICSI cycle
     

If PESA does not yield sufficient sperm, the fertility team may recommend proceeding to TESA or Micro-TESE as an alternative.

Is PESA Right for You?

PESA offers a quick, minimally invasive option for men with a confirmed blockage preventing sperm from reaching the ejaculate. It is not suitable for every type of male infertility, which is why an accurate diagnosis is essential before proceeding. During a consultation, your specialist will typically discuss:
 

  • Confirmation of obstructive versus non-obstructive azoospermia

  • Whether PESA, TESA, or Micro-TESE is the most appropriate technique for your case

  • Coordination with your partner's IVF/ICSI timeline

  • Whether retrieved sperm should be used fresh or frozen

Frequently Asked Questions

1. Is PESA painful?
PESA is performed under local anesthesia, so patients typically feel only mild pressure or a pinching sensation during the needle aspiration. Some soreness or bruising may follow for a day or two, usually manageable with over-the-counter pain relief.


2. How is PESA different from a vasectomy reversal?
Vasectomy reversal aims to reconnect the vas deferens surgically to restore natural fertility, while PESA simply retrieves sperm directly from the epididymis for use in IVF/ICSI, without repairing the underlying blockage. PESA is often chosen when reversal surgery isn't suitable or hasn't been successful.


3. Can PESA be done without general anesthesia?
Yes. Unlike Micro-TESE, PESA is typically performed under local anesthesia only, which is one reason it's considered a quicker, less invasive option for eligible candidates.


4. What happens if no sperm is found during PESA?
If the epididymal aspirate doesn't yield sufficient sperm, the fertility team may attempt aspiration at another site, or move to TESA or Micro-TESE, particularly if there's uncertainty about whether the azoospermia is purely obstructive.
 

5. Is PESA suitable for non-obstructive azoospermia?
No. PESA is designed for men whose sperm production is normal but blocked from release. For non-obstructive azoospermia — where sperm production itself is impaired — Micro-TESE is generally the more appropriate and effective technique.

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