[Seminal vesicle cysts (and ejaculatory duct cysts) with ipsilateral renal agenesis. Report of five cases and review of the literature].

Cystic malformations of the pelvic seminal tract associated with ipsilateral renal agenesis are rare. The cause of this malformation is a maldevelopment of the mesonephric duct between the 4th and 13th weeks of gestation. Usually the disease is discovered in the late second and in the third decade of life, at a time of great sexual activity. Accumulation of fluid in the seminal tract with insufficient drainage leads to complaints like chronic prostatitis, to perineal discomfort and to disturbances of sexual sphere. For the diagnostic evaluation, ultrasound studies (suprapubic and transrectal) are very useful. Treatment should be restricted to symptomatic cases only. The treatment modality ranges from conservative medical treatment to surgical excision. Five cases are presented. Four are treated conservatively and one is treated by transurethral aspiration and alcohol injection.