Testicular sperm extraction (TESE) is a surgical procedure in which a small amount of testicular tissue is removed through an incision and examined for sperm. When sperm are found, they are generally used with IVF and intracytoplasmic sperm injection (ICSI) or frozen for a future treatment cycle.
Conventional TESE is different from testicular sperm aspiration (TESA), which uses a needle, and from microdissection TESE (micro-TESE), which uses an operating microscope to identify promising seminiferous tubules. The correct procedure depends on why sperm are absent from the ejaculate.
TESE expertise with Dr. Arun Muthuvel in Chennai
Dr. Arun Muthuvel is an MCh-qualified reproductive medicine and surgery specialist in Chennai. His TESE approach combines diagnosis of male infertility, selection of the appropriate retrieval method, careful tissue handling, real-time embryology coordination, and planning of the couple’s IVF-ICSI cycle.
Expertise means knowing both how to perform sperm retrieval and when conventional TESE is not the best choice. Men with non-obstructive azoospermia usually require micro-TESE rather than a blind conventional biopsy, while some men with obstruction may be candidates for a less invasive epididymal or needle-based approach.
What Is Conventional TESE?
TESE is an open surgical sperm-retrieval technique. After anaesthesia, a small incision is made in the scrotal skin and the covering of the testicle. One or more tiny samples of testicular tissue are removed and passed to the embryology laboratory, where the seminiferous tubules are processed and searched for viable sperm.
TESE obtains an actual tissue sample rather than an aspirate. This can provide more tissue than TESA, but it is also more invasive. The aim is to retrieve enough usable sperm while limiting unnecessary removal of testicular tissue.
Who May Need TESE?
Conventional TESE may be considered in selected situations such as:
- Obstructive azoospermia: when sperm production is preserved but a blockage prevents sperm from reaching the ejaculate
- Failed or unsuitable epididymal retrieval: when PESA or MESA does not obtain adequate sperm or cannot be performed
- Failed needle aspiration: when TESA is inadequate and an open sample is clinically appropriate
- Selected ejaculatory disorders: when less invasive methods of obtaining sperm are unsuccessful or unsuitable
- Therapeutic biopsy: in unusual cases where tissue assessment is needed and sperm retrieval with cryopreservation is planned at the same procedure
In some obstructive conditions, microsurgical reconstruction may restore sperm to the ejaculate and offer a route to natural conception. Dr. Arun Muthuvel discusses reconstruction and sperm retrieval with IVF-ICSI rather than assuming TESE is the only option.
Is Conventional TESE the Best Choice for Non-Obstructive Azoospermia?
Usually not. In non-obstructive azoospermia (NOA), sperm production can be limited to small, scattered areas. Conventional TESE samples tissue without magnified visual selection and may miss those areas while removing more tissue.
Current European and American male-infertility guidance recommends micro-TESE for men with NOA who are candidates for surgical sperm retrieval. Micro-TESE allows the surgeon to inspect tubules under an operating microscope and selectively sample those that appear more likely to contain sperm. Conventional TESE should not be marketed as an equivalent shortcut for every NOA patient.
Evaluation Before TESE
The evaluation determines whether TESE is justified and which technique offers the best balance of retrieval chance and tissue preservation. It may include:
- Repeat semen analysis with examination of the centrifuged pellet
- Medical, reproductive, family, infection, and surgical history
- Examination of testicular size, epididymis, and vas deferens
- FSH, testosterone, and other hormone tests when indicated
- Genetic testing in selected men, including CFTR testing for absent vasa and karyotype or Y-chromosome microdeletion testing for severe sperm-production disorders
- Review of blood thinners, allergies, anaesthesia risks, and previous sperm-retrieval procedures
- Parallel assessment of the female partner to coordinate sperm retrieval with the most suitable fertility treatment
A purely diagnostic testicular biopsy is not routinely needed to distinguish obstruction from impaired sperm production. When tissue sampling is clinically necessary, a plan to search for and preserve sperm at the same time can avoid another operation.
How Is TESE Performed?
- Planning and consent: the diagnosis, surgical side, anaesthesia, laboratory plan, risks, and backup strategy are reviewed.
- Anaesthesia: local anaesthesia with or without sedation may be used; some cases require a different anaesthetic plan.
- Small incision: the surgeon opens the scrotal skin and testicular covering through a limited incision.
- Tissue extraction: a small sample of seminiferous tubules is removed and immediately passed to the embryologist.
- Laboratory search: the tissue is gently processed and examined for viable sperm. Feedback helps determine whether adequate sperm have been found.
- Closure: bleeding is controlled and the layers are closed with sutures. A dressing and scrotal support may be applied.
Why Real-Time Embryology Support Matters
TESE should be coordinated with an IVF laboratory capable of processing testicular tissue. Immediate embryology feedback can confirm whether sufficient sperm have been retrieved and help prevent unnecessary additional biopsies. Dr. Arun Muthuvel plans TESE as part of a combined surgical and embryology pathway rather than as an isolated operation.
Fresh or Frozen TESE Sperm?
In obstructive azoospermia, retrieval can often be performed in advance and suitable sperm frozen. This confirms sperm availability before the female partner begins ovarian stimulation and reduces the pressure of synchronising both procedures.
Current guidance allows either fresh or cryopreserved surgically retrieved sperm for ICSI when adequate viable sperm are available after processing and thawing. In NOA, where very few sperm may be found, retrieval and IVF timing may need a different strategy. The plan should be made with the embryology team.
Recovery After TESE
TESE is commonly performed as a day-care procedure. Mild to moderate soreness, bruising, or swelling may occur for several days. Patients are generally advised to use scrotal support, keep the wound clean and dry as instructed, take prescribed pain relief, and avoid heavy lifting, strenuous exercise, and sexual activity until cleared by the surgeon.
Seek medical review for increasing swelling, severe or worsening pain, fever, pus or wound discharge, spreading redness, persistent bleeding, or difficulty passing urine.
Risks and Limitations
- Pain, bruising, swelling, or scrotal haematoma
- Infection or wound problems
- Scarring within the testicle
- Damage to testicular tissue or blood supply
- Temporary or persistent reduction in testosterone, particularly after larger or repeated procedures or in men with poor baseline function
- Failure to find usable sperm
- Need for another retrieval method or future procedure
TESE cannot guarantee sperm retrieval, fertilisation, pregnancy, or live birth. Male diagnosis determines the chance of finding sperm, while IVF outcomes also depend on female age, egg quality, embryo development, uterine factors, and laboratory performance.
TESE, TESA, PESA and Micro-TESE Compared
| Procedure | Method | Typical role |
|---|---|---|
| PESA | Needle aspiration from epididymis | Selected obstructive azoospermia |
| TESA | Needle aspiration from testicle | Selected obstruction, failed PESA, or backup |
| TESE | Open extraction of testicular tissue | Selected cases needing an open tissue sample |
| Micro-TESE | Microscope-guided selection of testicular tubules | Preferred surgical retrieval technique for NOA |
Frequently Asked Questions
Is TESE painful?
Anaesthesia reduces pain during the procedure. Soreness afterward is expected and is usually managed with prescribed pain relief, scrotal support, and activity restriction. Experiences vary with the extent of surgery and individual sensitivity.
Can TESE sperm be used without IVF?
Testicular sperm are generally recovered in limited numbers and often have reduced movement, so they are usually used with IVF-ICSI rather than intercourse or IUI.
Can TESE be repeated?
Repeat retrieval may be possible, but previous surgery, scarring, testicular size, hormone levels, and the reason for the first outcome must be reviewed. Freezing adequate sperm during a successful procedure may reduce the need for repeat surgery.
Is TESE the same as a testicular biopsy?
Both remove testicular tissue, but TESE is performed with the therapeutic aim of retrieving sperm for assisted reproduction. A diagnostic biopsy is done primarily to examine tissue. When appropriate, sperm search and freezing should be planned during tissue sampling.
Why consult Dr. Arun Muthuvel for TESE in Chennai?
Dr. Arun Muthuvel’s MCh training in reproductive medicine and surgery allows the procedure to be integrated with azoospermia diagnosis, genetic evaluation, embryology, female fertility assessment, and IVF-ICSI planning. This helps ensure conventional TESE is used only when it fits the clinical situation.
The Bottom Line
Conventional TESE is an established sperm-retrieval procedure for carefully selected men, particularly when an open testicular sample is appropriate. Dr. Arun Muthuvel provides specialist TESE evaluation and IVF-ICSI coordination in Chennai, selecting between PESA, TESA, TESE, reconstruction, and micro-TESE according to the cause of infertility.
This article provides general medical information and does not replace individual diagnosis, consent, or surgical advice. Sperm-retrieval and IVF outcomes vary with male diagnosis, female factors, laboratory performance, and clinical circumstances.