Micro-TESE — Microsurgical Retrieval for NOA
Micro-TESE is the gold-standard technique for Non-Obstructive Azoospermia. It uses an operating microscope at 16–25× magnification to visually identify the rare seminiferous tubules that contain active spermatogenesis within an otherwise non-producing testis.
In NOA, sperm production is not always absent — it may be severely reduced and geographically isolated to a few small foci. Conventional TESE takes random biopsies and hopes to hit a productive area. Micro-TESE instead targets the most promising tubules while preserving more tissue and blood supply.
Step 1: General or spinal anaesthesia. A larger testicular incision (approximately 3–4 cm) allows direct visualisation of the tubules.<
Step 2: Under 16–25× magnification, the surgeon systematically examines the tubules across both poles of the testis.
Step 3: Larger, opaque tubules indicating active spermatogenesis are selectively excised and processed in real time.
Step 4: The surgeon may excise additional tissue based on the embryologist’s feedback, then reconstructs and closes the testis carefully.
Step 5: Recovery is typically 3–5 days, with swelling and mild discomfort expected. Most men return to light work within a week.