Herlyn-Werner-Wunderlich Syndrome: Report of a Prenatally Recognised Case and Review of the Literature.

Herlyn-Werner-Wunderlich syndrome, defined by the triad of uterus didelphys, obstructed hemivagina and ipsilateral renal agenesis, is a rare Mullerian malformation, usually diagnosed after menarche, when symptoms related to hematocolpos arise. Rarely, this malformation is diagnosed in the neonatal period, normally following prenatal diagnosis of renal agenesis. Herein, a case recognized on prenatal imagiology that underwent surgery on the fourth day of life is reported. The records of prepubertal cases were also collected, addressing the clinical and imagiological features. In the presence of a solitary kidney and/or a pelvic mass on prenatal ultrasound, Herlyn-Werner-Wunderlich syndrome should be considered, enabling neonatal treatment.