RESUMEN
Abdominal pregnancy is a very rare condition of ectopic pregnancy with a high mortality rate for mother and fetus. It occurs when the gestational sac implanted outside the uterus, ovaries and fallopian tubes. Although this condition is potential life-threatening but often misdiagnoses of other variant ectopic pregnancy. Prompt detection in initial stage of pregnancy is necessary to prevention of dangerous complication. This present casereport was a patient who admitted in the Alzahra hospital during two decades. She was a 23-year old nulliparous woman with a history of primary infertility that underwent ovarian hyper stimulation with clomiphen citrate. She underwent transvaginal ultrasonography because of menstrual retardation, positive serum betaHCG test and spotting. It was diagnosed an incomplete abortion according to clinical symptoms and lack of gestational sac inside the uterus. Transvaginal ultrasonography was performed again for persistency the pregnancy symptoms after 4months. Diagnostic pelvic ultrasonography confirmed a 16-week intra-abdominal pregnancy. The ultrasonographic examination confirmed a 27-week intra-abdominal pregnancy. The woman was admitted immediately. The surgery was performed, without any complications. She recovered well and was discharged soon