Zinner syndrome: Case report and brief review of the literature.

Zinner syndrome (ZS) is a rare congenital anomaly of the mesonephric (Wolffian) duct, classically defined by the triad of unilateral renal agenesis, ipsilateral seminal vesicle cyst, and ejaculatory duct obstruction. Fewer than 300 cases have been reported in the literature, with most diagnosed in childhood or early adulthood. We present the case of a 17-year-old male who underwent imaging after a syncopal episode, which incidentally revealed inferior vena cava duplication, right renal agenesis, and right-sided cystic dilatation of the seminal vesicle. This case demonstrates radiologic features of ZS and offers a brief review in the embryology, clinical presentation, and management of this syndrome.