A bicornuate uterus is a type of uterine duplication anomaly. It can be classified as a class IV Mullerian duct anomaly.  MRI is better imaging modality for depicting the degree of uterine fusion in order to differentiate between didelphys and bicornuate uterus.

The diagnosis of a didelphys should not be made based on the presence of two uterine, cervical, and vaginal canals, but upon the level of uterine fusion: if there is no fusion of any segment of the uterus, then a didelphys is present and if the lower/mid uterine segments are fused, then it is a bicornuate.

​Per speculum examination, this patient has only one external cervical os which suggests to be bicornuate unicollis (Class IV b - partial fusion).

​Renal anomalies are frequently associated, most commonly renal agenesis as seen in this case.