MDAs are classified into several types based on the extent and nature of the anomaly. The main types include:
1. Class I (Müllerian Agenesis): Complete absence of the uterus and the upper part of the vagina. 2. Class II (Unicornuate Uterus): Development of only one Müllerian duct, resulting in a single uterine horn. 3. Class III (Uterus Didelphys): Complete failure of Müllerian duct fusion, leading to a double uterus, cervix, and sometimes a double vagina. 4. Class IV (Bicornuate Uterus): Partial fusion of the ducts, producing a uterus with two horns. 5. Class V (Septate Uterus): A normal outer uterine contour with an internal septum dividing the uterine cavity. 6. Class VI (Arcuate Uterus): A slight indentation at the top of the uterine cavity. 7. Class VII (Diethylstilbestrol (DES) Uterus): Anomalies resulting from in-utero exposure to the synthetic estrogen DES, leading to a T-shaped uterine cavity.
