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This transvaginal ultrasound video was taken in the short (or transverse) axis. An anechoic sac with a white rim is seen within the uterus. There is no evidence of a yolk sac or fetal pole in this ultrasound. While this anechoic sac is in fact a gestational sac, a definitve IUP is not established until a yolk sac is seen within the gestational sac. The reason for this is that endometrial sloughing can sometimes mimic the appearance of a gestational sac resulting in a false sense of security. Around the outside of this anechoic sac (immediately on the left) is a small black (anechoic) area of fluid which is a subchorionic hemorrhage. When the trophoblastic cells embed themselves within endometrial tissue, subchorionic bleeding can occur. There is a potential risk to the embryo if the bleeding increases in size. Finally the video moves off to the left adnexa to visualize the left ovary & corpus luteum. Comments about this case? Home Pelvic Links Next Case |