Heterotopic Pregnancy in a Patient Not on Fertility Treatment

Abstract

Heterotopic pregnancy is a combination of an intrauterine pregnancy and an ectopic pregnancy. This is a rare event but has increased in incidence as in vitro fertilization becomes more common. This type of pregnancy is challenging to image and diagnose with sonography. This case reports a heterotopic pregnancy involving a woman in her late 20s who presented to the emergency room with acute abdominal pain, vomiting, and decreased blood pressure. The ectopic pregnancy was not visualized on an earlier dating scan. This case study discusses the etiology, diagnosis, sonographic appearance, and treatment of heterotopic pregnancy.