Herlyn-Werner-Wunderlich (HWW) syndrome is a very rare congenital anomaly of the urogenital tract involving Müllerian ducts and Wolffian structures,
It is characterized by the triad of:
- Duplication of the uterus, cervix and vagina
- Unilateral hematocolpos or hematometrocolpos
- Absent kidney on the same side as the uterovaginal obstruction