Pathogenesis of persistent infertility in men after varicocelectomy

Area of Science:

• Urology
• Reproductive Medicine
• Andrology

Background:

• Varicocele is a common cause of male infertility.
• Surgical ligation of the spermatic vein is a treatment for varicocele.
• Persistent infertility after surgery necessitates further etiological investigation.

Purpose of the Study:

• To investigate the causes of persistent infertility in men who underwent spermatic vein ligation for varicocele.
• To identify potential factors contributing to failed conception post-surgery.

Main Methods:

• Clinical examination of 27 patients with persistent infertility after varicocele surgery.
• Seminal fluid analysis for Ureaplasma urealyticum.
• Assessment for orchiepididymitis, sperm-agglutinating antibodies, and female infertility factors.
• Evaluation of preoperative gonadotropin levels as indicators of testicular damage.

Main Results:

• 12 patients (44.4%) had persistent varicocele.
• Ureaplasma urealyticum was detected in the seminal fluid of 6 patients (22.2%).
• Other identified factors included orchiepididymitis (1 patient), sperm-agglutinating antibodies (1 patient), and female infertility (1 patient).
• Preoperative high gonadotropin levels, indicating testicular parenchymal alteration, were found in 3 patients (11.1%).
• In 3 patients (11.1%), no pathological findings were identified to explain persistent infertility.

Conclusions:

• Persistent infertility after varicocele surgery can be multifactorial.
• Recurrent varicocele and Ureaplasma urealyticum infection are significant contributors.
• Testicular damage, indicated by elevated gonadotropins, and female factors also play a role.
• A small subset of patients remains unexplained, highlighting the complexity of male infertility.