Zinner syndrome: two cases and review of the literature.

Zinner syndrome (ZS) is a rare congenital malformation due to abnormal development of the urogenital tract. It is caused by a growth failure of the distal part of the Müllerian duct in early embryogenesis. It is characterised by the triad of unilateral renal agenesis, ipsilateral seminal vesicle cyst and ipsilateral ejaculatory duct obstruction. Over the years, several cases have been reported in the literature since the initial report by Zinner in 1914. This syndrome is frequently misdiagnosed because it may present different patterns and the symptoms may be not specific. In this paper, we present two patients with two different patterns of presentation of Zinner syndrome. © BMJ Publishing Group Limited 2021. No commercial re-use. See rights and permissions. Published by BMJ.