An ectopic pregnancy is one in which the fertilized egg implants in tissue outside of the uterus and the placenta and fetus begin to develop there. The most common site is within a Fallopian tube, however, ectopic pregnancies can occur in the ovary, the abdomen, and in the lower portion of the uterus (the cervix).
Review Date: 4/5/2016
Reviewed By: Irina Burd, MD, PhD, Associate Professor of Gynecology and Obstetrics at Johns Hopkins University School of Medicine, Baltimore, MD. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.