Objective: We present a rare case of primary unruptured full term ovarian pregnancy resulting in the delivery of a live female infant and draw attention to the importance of early recognition of primary ovarian pregnancy.
Case report: A 24-year-old primigravida woman presented with oligohydramnios at 36+ weeks after her last normal menstrual period with normal fetal movement. She was generally asymptomatic except for a mild pain over her lower abdomen. Didelphic uterus and abdominal pregnancy were both suspected by ultrasonography. A Laparotomy was performed and a full term live female infant was delivered from the intact right ovary. The pathologic examination confirmed the diagnosis of primary ovarian pregnancy.
Conclusion: Due to improvements of high resolution transvaginal pelvic ultrasound, earlier use of quantitative measurement of serum β-human chorionic gonadotrophin, and operative laparoscopy, early and more accurate diagnosis of an ovarian pregnancy is now more feasible. However, the accuracy of ultrasound in diagnosing ovarian pregnancy at advanced gestation is still challenging.