IS Case 578: Left seminal vesicle cysts with left renal agenesis

Narasimhachar G. Prativadi, MD

Imaging Sciences URMC

Imaging Sciences URMC 2010
Publication Date: 2011-11-17


Patient is an 18-year-old male presenting to the emergency department after motor vehicle collision.


Several left seminal vesicle cysts versus dilated left seminal vesicle. Left renal agenesis.


Left seminal vesicle cysts with left renal agenesis


Congenital seminal vesicle cysts become symptomatic in young adulthood. Atresia of the ejaculatory ducts causes accumulation of secretions in the gland, distention, and cyst formation. Cysts are usually unilateral. Acquired cysts are seen with chronic prostatitis or with prostate surgery.

Congenital seminal vesicle cysts are associated with ipsilateral renal agenesis. Maldevelopment of the distal mesonephric duct leads to absence of the ureteral bud, and therefore ipsilateral renal agenesis and atresia of the ejaculatory duct with subsequent obstruction of seminal vesicles and cyst formation.


  1. Livingston L, Larsen CR. Seminal vesicle cyst with ipsilateral renal agenesis. AJR Am J Roentgenol. 2000 Jul;175(1):177-80. PMID: 10882270

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