Pregnancy in Non-communicating Half of Septate Uterus.

Septate uterus is the most common structural anomaly of all mullerian defects. It is included in Class V of the AFS classification of anomalies of mullerian ducts. Fusion of the median septum of the mullerian ducts proceeds cephalad from the mullerian tubercle up to the junction of future round ligaments; shortly thereafter, the septum between the ducts is resorbed. Congenital defects can occur because of failure of lateral fusion. If the two horns of the partially fused uterus are recognizable, the uterus is designated as a bicornuate uterus. However, if the external configuration of the uterus is relatively normal and malfusion is represented only by a septum within the uterus, the uterus can be referred to as a septate uterus. A cornual pregnancy results from nidation in one horn of a bicornuate uterus, a unicornuate uterus, or in lateral half of a septate uterus, and is therefore not strictly an ectopic pregnancy. Case Report