Seminal vesicle cysts can occur in a number of conditions. Bilateral seminal vesicle cysts (seen in this image) occur in about 50% of patients with autosomal dominant polycystic kidney disease. Congenital seminal vesicle cysts are associated with ipsilateral renal agenesis or dysgenesis in 2/3 of cases. Other associations include agenesis of the vas deferens or ectopic ureteral insertion into the seminal vesicle, ejaculatory duct, vas deferens or prostatic urethra.
Seminal vesicle cysts can also be mimicked by various conditions, including obstruction of the seminal vesicles, ejaculatory duct, or vas deferens. Other conditions that can mimic seminal vesicle cysts include a dilated ectopic ureter, ureterocele, Müllerian duct cyst, prostatic utricular cyst, and ejaculatory duct cyst.
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