Recurrent aboion occurs in a woman, USG abdomen shows a non-echoic region in the central pa of the uterus. What is the probable diagnosis
Arcuate uterus
Septate uterus
Bicornuate uterus
Unicornuate uterus
Septate uterus is most common It causes about 25% of spontaneous first trimester aboions 6% second trimester aboions Ref: Shaw Gynecology 17 e pg 72.
Congenital malformations