Fig. 3From: Rare heterotopic pregnancy after frozen embryo transfer: a case report and literature reviewThe ultrasonograms before the laparotomy . a transvaginal ultrasonogram of uterus after curettage; b: the feotal bud of retroperitoneal pregnancy by transabdominal ultrasonogram; c: transabdominal colour Doppler ultrasonogram of retroperitoneal pregnancyBack to article page