Imaging in male-factor obstructive infertility.

Area of Science:

• Urology
• Radiology
• Reproductive Medicine

Background:

• Male infertility affects a significant portion of couples seeking reproductive assistance.
• Identifying correctable causes, such as seminal tract obstruction, is crucial for successful treatment.
• Various imaging modalities exist, but the most reliable diagnostic technique remains debated.

Purpose of the Study:

• To review and delineate the roles of different imaging modalities in diagnosing obstructive infertility in men.
• To provide a guide for selecting appropriate imaging techniques based on clinical presentation.
• To discuss the diagnostic accuracy and therapeutic implications of each imaging modality.

Main Methods:

• Review of existing literature on imaging techniques for male obstructive infertility.
• Discussion of scrotal ultrasonography, transrectal ultrasound (TRUS), vasography, MRI, and other procedures.
• Analysis of diagnostic pathways and management strategies based on imaging findings.

Main Results:

• Scrotal sonography is the initial imaging modality for male infertility evaluation.
• Transrectal ultrasound (TRUS) is the second-line imaging modality for suspected proximal obstruction.
• Endorectal magnetic resonance imaging (MRI) serves as a detailed map for complex cases or when TRUS is inconclusive.

Conclusions:

• A stepwise imaging approach, starting with scrotal ultrasound and progressing to TRUS and MRI, aids in diagnosing obstructive infertility.
• Specific imaging findings guide management, including surgical interventions like vasoepididymostomy or transurethral resection of the ejaculatory ducts (TURED).
• Sperm retrieved during procedures can be utilized for assisted reproduction techniques, offering a dual benefit.