Seminal Vesicle Ultrasound and Aspiration


In men with azoospermia (no sperm in the ejaculate) or severe oligospermia (few sperm in the ejaculate) and decreased semen volumes, an obstruction may be present where the ejaculatory ducts empty into the urethra.  This may be due to stenosis or scarring of the ducts, stones, or ejaculatory ducts cysts.  A transrectal ultrasound is a test that can provide an image of the seminal vesicles and ejaculatory ducts.  Obstructed seminal vesicles are often dilated, and aspiration of the obstructed fluid is performed to assess for sperm, which if present, suggests the presence of an obstruction.


Seminal Vesicle Aspiration Resources



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