A pregnancy with a gestational sac in the right uterine horn belongs to a kind of ectopic pregnancy, which can’t be aborted directly, but can be cleared under hysteroscopy or laparoscopy. The right side of the uterine cavity in the corner of the uterus with a gestational sac is generally not recommended to directly do abortion, because the corner of the uterus is thin, direct abortion may lead to rupture of the uterus, and due to the location of the reasons, may lead to the inability to remove cleanly, easy to residual part of the tissue, but you can be hysteroscopic or laparoscopic removal of uterus surgery. The pregnancy sac in the right corner of the uterine cavity is mainly because the fertilized egg is located in the corner of the uterus at the time of implantation, which belongs to a kind of ectopic pregnancy, and due to the thinness of the uterine corner, it may lead to hemorrhage in severe cases. If you find a pregnancy sac in the right corner of the uterine cavity, you should seek medical treatment promptly.