Abstract
An ectopic pregnancy (EP) is a well-known complication after in vitro fertilization-embryo transplantation (IVF-ET). 1 An interstitial pregnancy is a rare and dangerous variation of an EP. It refers to an EP that is implanted in the interstitial portion of the fallopian tube, which is defined as the tubal segment traversing the muscular wall of the uterus. 2 In addition, an interstitial pregnancy rarely occurs after IVF-ET with salpingectomy. Although the direct transfer of embryos into the uterine cavity with bilateral salpingectomy should theoretically prevent the occurrence of an EP, an EP with bilateral fallopian tube resection has been reported rarely. 3 To our knowledge, there has been no report of a bilateral interstitial pregnancy after IVF-ET with bilateral salpingectomy. Here we present a case of a bilateral interstitial pregnancy after IVF-ET detected by transvaginal sonography (TVS) in a patient with bilateral salpingectomy. This case suggests that interstitial pregnancies occurring after bilateral tubal resection are still possible.
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