Tubal Ostium Pregnancy

Abstract

A 30-year-old woman presented to the hospital with vaginal spotting and intermittent pelvic pain at 6 weeks of gestation. Transvaginal ultrasonography showed an intrauterine empty sac sized 0.6 cm × 0.3 cm and a suspected corpus luteum in the left adnexa. Her serum β human chorionic gonadotropin (β-hCG) level was 1781 IU/L and slowly increased to 1911 IU/L 2 days later. Diagnostic hysteroscopy was performed and showed a small yellow tissue shielding the left cornu (Fig. 1). The tissue protruded inward when hysteroscopic filling pressure was reduced (Fig.