Male Infertility
Azoospermia — Obstructive
Complete absence of sperm in ejaculate due to a blockage in the ductal system, despite normal sperm production in the testes.
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Overview
Overview
Complete absence of sperm in ejaculate due to a blockage in the ductal system, despite normal sperm production in the testes.
Symptoms
No sperm on semen analysis
Normal testicular size
Normal FSH/testosterone
Causes
1
Vasectomy2
Previous infection (chlamydia, gonorrhoea)3
CBAVD (CFTR mutation)4
Previous hernia repairHow It's Diagnosed
Semen analysis (repeated)
FSH, LH, testosterone
Testicular volume (normal in OA)
Scrotal ultrasound
CFTR gene testing if CBAVD suspected
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