Background: Cesarean section scar ectopic pregnancies are a rare complication of pregnancy that may follow previous hysterotomy for any cause, uterine manipulation, and in vitro fertilization. It has become more common with the increasing number of cesarean sections worldwide. Fortunately, the use of first-trimester ultrasound imaging has led to a significant number of these pregnancies being diagnosed and managed early.
Case presentation: We report a case of a 36-year-old black African patient who had two previous cesarean sections and one previous surgical evacuation. She presented with a type 2 cesarean section scar ectopic pregnancy that was suspected on the basis of transvaginal ultrasound imaging, but not at laparoscopy/hysteroscopy. A bladder adherent to the upper segment of the anterior uterine wall obscured the gestational mass at laparoscopy. There were extensive intracavitary adhesions that interfered with hysteroscopic visualization. This resulted in the original operative procedure being postponed until magnetic resonance imaging confirmed the ectopic location of the pregnancy. The ectopic gestation was subsequently excised, and the uterus was repaired via laparotomy.
Conclusions: It is important for clinicians and radiologists managing women with risk factors for a scar ectopic pregnancy to maintain a high index of suspicion during follow-up. Failure to diagnose and initiate prompt management may lead to uterine rupture, massive hemorrhage, and maternal death.
Keywords: Cesarean scar ectopic pregnancy; Diagnostic challenge; Management.