Scrotal ultrasonography and transrectal ultrasonography (TRUS) are useful in detecting uni- or bilateral<unk> , which may be associated with visible abnormalities or agenesis of the epididymis, seminal vesicles or kidneys.
Congenital absence of the vas deferens
Recurrent toxin-mediated perineal erythema
Immunodeficiency with hyperimmunoglobulin M
Autoimmune autonomic ganglionopathy
Urethral foreign body
Ejaculatory duct obstruction
Bladder sphincter dyssynergia
Retrograde ejaculation