[Epididymal fine needle aspiration replacing vasography]

Area of Science:

• Urology
• Reproductive Medicine
• Surgical Diagnostics

Background:

• Male infertility affects a significant portion of couples seeking reproductive assistance.
• Azoospermia, characterized by the absence of sperm in ejaculate, can stem from obstructive or non-obstructive causes.
• Identifying the precise location of genital tract obstruction is crucial for effective treatment planning.

Purpose of the Study:

• To evaluate the diagnostic utility of epididymal fine needle aspiration (EFNA) in localizing male genital tract obstruction.
• To correlate EFNA findings with the site of occlusion in infertile, azoospermic men with adequate spermatogenesis.
• To assess EFNA as a safer alternative to traditional vasography for diagnosing obstruction.

Main Methods:

• Epididymal fine needle aspirations (EFNA) were performed on 29 epididymides from 17 infertile, azoospermic men.
• Testicular cytology confirmed adequate spermatogenesis, and sonograms verified male excretory organ presence.
• Aspirates were analyzed for the presence of cuboidal epithelial cells and spermatozoa to determine obstruction site.

Main Results:

• Presence of only cuboidal epithelial cells in 34% of aspirates indicated proximal obstruction (rete testis, efferent ductules, or proximal epididymis).
• Presence of both cuboidal cells and spermatozoa in 45% of aspirates suggested distal obstruction (distal epididymis or vas deferens).
• Aspirations were unsuccessful in 21% of cases, precluding diagnosis.

Conclusions:

• EFNA is a valuable diagnostic tool for identifying the location of male genital tract obstruction.
• Accurate localization of obstruction via EFNA can guide appropriate treatment selection, such as reconstructive surgery or assisted reproductive technologies.
• EFNA offers a potentially safer diagnostic approach compared to vasography for suspected cases of male reproductive tract obstruction.