Uterine didelphys is a congenital Müllerian duct anomaly characterized by the complete failure of fusion of the bilateral Müllerian ducts. This results in the presence of two separate uteri, each with its own cervix, often with a vaginal septum. Clinically, patients typically present with double uterus and cervix, which is the hallmark feature distinguishing it from other uterine anomalies. This anatomical duplication impacts surgical approach and obstetric management, requiring careful evaluation before interventions such as hysteroscopy or cesarean section.

Reference: Williams Gynecology, Hoffman et al., 3rd Edition.