Presentation
Pelvic pain,? ureteric obstruction.
Patient Data
Age: 30 years
Gender: Male
From the case:
Seminal vesicle cyst with ipsilateral renal agenesis
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Well-defined hyperdense mass (HU = 50) sitting behind the bladder in the region of the right seminal vesicle. Note the absent right kidney and hypertrophied left kidney.
From the case:
Seminal vesicle cyst with ipsilateral renal agenesis
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The US confirms an echolucent lesion behind the bladder with posterior acoustic enhancement indicative of a cyst. Note no blood flow on color Doppler analysis. No kidney in the right renal fossa.
Case Discussion
These seminal vesicle cysts occur as a result of maldevelopment in the distal mesonephric duct and the absence of the ureteric bud. This causes renal agenesis and obstruction to the seminal vesicle and secondary cyst formation due to atresia of the ejaculatory duct.
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