Ultrasound images of Bicornuate uterus with gestation sac

Pregnancy occures in one horn of uterus that has two horns (cornu):




The above ultrasound images show a bicornuate uterus with a gestation sac in the right cornu (1).
The empty left cornu (2) shows typical decidual changes of pregnancy. The 3rd image (bottom) is a sagittal section through each cornu.