Kashan University of Medical Sciences, Kashan, Iran
Introduction: Although 1% to 2% of all pregnancies are ectopic, ectopic pregnancy (EP) is the most frequent obstetrical disease leads to maternal mortality and morbidity at first trimester. The basic diagnostic method of EP is the human chorionic gonadotropin (HCG) test and transvaginal ultrasound. There are some rare EP cases with negative HCG blood test.
Case presentation: A 31-years old woman referred to the emergency department with hypogastric, periumbilical, and right upper quadrant intermittent pain and vaginal bleeding and prior history of EP 7-months ago that treated with methotrexate and her intra uterine device had been removed at that time. Her last menstrual period was undetermined. Although HCG blood test-qualitative was negative (2.08 IU /ml),ultrasound examination showed an 43×53 mm echogenic, heterogenic complex solid mass in the left adnexa and a large amount of echogenic fluid demonstrating hemoperitoneum. Taken surgery because of the exceeded abdominal pain revealed active bleeding in the left salpinx due to ruptured EP.
Conclusion: Management of patients suspected of EP with negative HCG-blood test is difficult. In this uncommon cases in emergency, computed tomography, ultrasound and diagnostic laparoscopy or laparotomy can improve prognosis of patient.
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