Overview
Acquired obstructive azoospermia results from post-testicular obstruction that impedes sperm transport, leading to the absence of spermatozoa in the ejaculate despite normal spermatogenesis within the testes 1.Diagnosis
Semen Analysis: Confirm azoospermia (absence of sperm in semen) 1.
Hormonal Evaluation: Assess FSH, LH, testosterone levels to rule out hormonal causes 1.
Genetic Testing: Consider karyotyping and Y-chromosome microdeletion analysis to identify underlying genetic factors 1.
Imaging Studies: Scrotal ultrasound to evaluate for varicoceles or other anatomical abnormalities 1.
Vasography or Vasal Patency Test: To confirm the site of obstruction (e.g., vas deferens) 1.Management
Surgical Reconstruction: Vasovasostomy or vasoepididymostomy for obstructive lesions 1.
Assisted Reproductive Technologies (ART): Testicular sperm extraction (TESE) followed by intracytoplasmic sperm injection (ICSI) if surgical options are unsuccessful 1.Special Populations
Postvasectomy Patients: High compliance with mail-in semen analysis kits observed in small urology practices (76-87% at 40 weeks) compared to large practices (80% at 40 weeks) 1.Key Recommendations
Utilize mail-in semen analysis kits to enhance compliance in postvasectomy patients, particularly in small urology practices (Evidence: Moderate) 1.
Perform comprehensive diagnostic workup including hormonal assessment and imaging to differentiate obstructive from non-obstructive azoospermia (Evidence: Expert opinion) 1.
Consider surgical reconstruction as a first-line treatment for acquired obstructive azoospermia when anatomical obstruction is confirmed (Evidence: Moderate) 1.References
1 Gu C, Belarmino A, Kenfield SA, Nolte D, Civello D, Smith JF et al.. Postvasectomy Semen Analysis Compliance With Utilization of a Mail-In Semen Analysis Kit. The Journal of urology 2024. link