Diagnosis of ectopic pregnancy with ultrasound

Best Pract Res Clin Obstet Gynaecol. 2009 Aug;23(4):501-8. doi: 10.1016/j.bpobgyn.2008.12.010. Epub 2009 Apr 7.


Transvaginal sonography (TVS) is now the imaging modality of choice for the diagnosis of ectopic pregnancy with overall reported sensitivities of>90%. Specific sonographic criteria exist for the diagnosis of tubal and non-tubal pregnancies including cervical and caesarean section scar pregnancies. Diagnosis is based on the visualization of an ectopic mass rather than the inability to visualize an intra-uterine pregnancy. This chapter discusses the specific criteria used for the diagnosis of ectopic pregnancy and examines the literature assessing the accuracy of ultrasound as a diagnostic tool.

Publication types

  • Review

MeSH terms

  • Diagnosis, Differential
  • Fallopian Tubes / diagnostic imaging*
  • Female
  • Humans
  • Pregnancy
  • Pregnancy Outcome
  • Pregnancy, Ectopic / diagnostic imaging*
  • Ultrasonography, Prenatal / methods
  • Uterus / diagnostic imaging*