Uterus Didelphys Or Double Uterus

Description

Uterus didelphys is presented here as a fully duplicated uterine body with two separate endometrial cavities, each tapering inferiorly into its own cervix. The paired uterine horns sit side by side, divided by a deep midline cleft at the fundus and separated throughout their length by intervening myometrium, so the right and left cavities remain noncommunicating. Inferiorly, each cervical canal descends toward an individual external os, creating a clear right-left symmetry that mirrors failed fusion of the Müllerian (paramesonephric) ducts. Two cervices. No shared cavity. Clinically, this configuration matters because the obstetric behavior differs from septate uterus and bicornuate uterus, and management hinges on recognizing true duplication rather than a single cavity partition. Uterus didelphys is associated with malpresentation, preterm birth, and occasionally obstructed hemivagina in the OHVIRA spectrum, and it can coexist with ipsilateral renal anomalies, so the duplicated cervices in a single internal field help anchor that diagnostic conversation. The fixed internal perspective clarifies where the endometrial lining transitions into the endocervical canals at the internal os on each side, a relationship that can be hard to communicate when correlating MRI or hysterosalpingography findings with pelvic exam. Use this illustration in embryology and reproductive anatomy teaching to contrast Müllerian fusion defects, and in OB-GYN lectures or publications discussing recurrent pregnancy loss workups, congenital uterine anomalies, and counseling around delivery planning. It also supports patient-facing materials and pre-procedure discussions when explaining why two cervical canals may be encountered during speculum exam, Pap testing, hysteroscopy, or embryo transfer. Anatomical accuracy verified by SciePro's Medical Advisory Board.