Two Cases of Herlyn-Werner-Wunderlich Syndrome with Severe Dysmenorrhea, One Misdiagnosis and One Missed Diagnosis

Herlyn-Werner-Wunderlich (HWW) syndrome is a rare variant of mullerian duct anomalies characterized by the triad of uterine didelphys, obstructed hemivagina and ipsilateral renal agenesis. We report two cases of HWW syndrome in young women with abdominal pain. This diagnosis can easily be missed if a clinician is not aware of the syndrome. In one case, the computed tomography image of obstructed hemivagina with hematocolpos was initially mistaken for a cystic tumor of adnexa by the radiologist; in the other case, correct diagnosis was missed for years despite numerous visits to different hospitals due to lack of awareness of the syndrome.