Successful repeat microdissection testicular sperm extraction in men with nonobstructive azoospermia

Area of Science:

• Reproductive Medicine
• Andrology
• Urology

Background:

• Nonobstructive azoospermia (NOA) presents a significant challenge for fertility.
• Microdissection testicular sperm extraction (TESE) offers a chance for sperm retrieval in NOA patients.
• Predicting success in repeat TESE procedures is crucial for patient management.

Purpose of the Study:

• To identify clinical factors predicting successful repeat microdissection TESE in men with NOA.
• To evaluate the utility of hormonal and testicular parameters in repeat TESE attempts.

Main Methods:

• Retrospective analysis of 126 men with NOA undergoing repeat microdissection TESE.
• Assessment of clinical factors including age, testicular volume, endocrinological data, and histology at the second procedure.
• Statistical analysis using logistic regression and ROC curves.

Main Results:

• Successful sperm retrieval occurred in 82% of repeat TESE attempts.
• Successful repeat attempts were associated with lower follicle-stimulating hormone (FSH) and larger testicular volume.
• No single factor reliably predicted sperm retrieval in repeat TESE, though a fair prediction model was identified (AUC=0.71).

Conclusions:

• Follicle-stimulating hormone levels and testicular volume at repeat TESE show predictive value for success.
• These predictors differ from those for primary TESE attempts in NOA.
• Findings offer insights for counseling and planning repeat TESE procedures.