Abstract
Herlyn-Werner-Wunderlich syndrome is a rare complex congenital disorder, with combined Müllerian and mesonephric duct anomalies, presenting with uterus didelphys, unilateral blind hemivagina and ipsilateral renal agenesis. Hemivaginal obstruction usually leads to impairment of normal menstrual flow, resulting in symptoms after menarche, namely dysmenorrhea, pelvic pain or infertility. Age of presentation depends on the anatomical features of this anomaly. We report a case of a 21-year-old female presenting with few symptoms and incidental findings on transvaginal ultrasound, with typical findings of this disorder on magnetic resonance imaging, which remains the gold standard imaging technique for thorough assessment of Herlyn-Werner-Wunderlich syndrome, allowing for a correct diagnosis and adequate surgical management. Our case also highlights some unusual features, such as the presence of a blind ectopic ureter, with hematic content, and an incomplete septum within the obstructed hemivagina.