<prompt> MC congenital abnormality of uterus is :Uterus didelphysArcuateUnicornuateSeptate  <response>: Septate Sorry for this one friends, 2 very reliable textbooks quote different incidences of different malformations. Anomaly r Per cent Anomaly Per cent Bicornuate uterus 37 Septate uterus 35 Arcuate uterus 15. Bicornuate uterus 26 I Incomplete septum 13 Arcuate uterus 18 Uterus didelphys 11 Unicornuate uterus 10 Complete septum 9 - Uterus didelphys 8 Unicornuate uterus 4 Now decide for yourself which book would you like to follow. 