Ectopic pregnancy and first trimester abortion.

A total of 41,753 first-trimester abortions were done over a 4-year period at two Planned Parenthood centers, among which 11 verified cases of ectopic (tubal) pregnancy were discovered. Elective abortion provides an opportunity for the diagnosis of unruptured ectopic pregnancy. Pathologic examination of tissue specimens is important in suggesting the presence of an ectopic gestation. Patients who become pregnant with an intrauterine device in place are at higher risk for an ectopic pregnancy.