Omental pregnancy is a rare form of abdominal pregnancy, In the 5 prev
iously reported cases, primary implantation of the embryo to the oment
um has been proposed as its etiology. We present a new case of omental
pregnancy in a 31-year-old woman presenting with symptoms of ectopic
pregnancy, After careful review of our case and the published literatu
re in view of the accepted definition of primary abdominal pregnancy,
we conclude that all reported instances of omental pregnancy are secon
dary and probably follow tubal or ovarian pregnancy abortion.