We report the case of a young man who presented with numerous episodes of i
psilateral epididymitis, Selected imaging studies with consideration of uro
genital embryology lead to the rare diagnosis of a dysplastic kidney with u
reteral ectopia in the seminal vesicle. After nephroureterectomy and vesicu
lectomy, convalescence was uneventful. No specific symptoms, equivocal diag
nostic findings and the small number of patients limit the surgical experie
nce in diseases of the seminal vesicle. Suprainguinal extravesical extirpat
ion, however, appears to be an excellent operative approach in cases of uni
lateral seminal vesicle cysts.