正常子宮内妊娠と判断されたが卵管間質部妊娠であった一例

抄録

  Interstitial pregnancy is a rare and life-threatening condition. The most important facet of caring for women with interstitial pregnancy is early diagnosis. We report a case of interstitial pregnancy that was indistinguishable from normal intrauterine pregnancy. A 38-year-old woman, gravida 4 para 3, with a history of laparoscopic salpingectomy for ectopic pregnancy, felt a strong lower abdominal pain and visited our emergency department. The pregnancy test result was positive, and transvaginal ultrasonography revealed intrauterine pregnancy of 11 weeks with intrapelvic hemorrhage but without an adnexal mass. Two hours later, she felt severe upper abdominal pain. Urgent ultrasonography revealed increased intra-abdominal hemorrhage. Emergency laparoscopy was performed. We collected 1400 ml of blood in the abdominopelvic cavity and found that she had a left interstitial pregnancy with bleeding. We removed all gestational tissue and performed a cornuostomy. After the surgery, 4 blood units were transfused. Interstitial pregnancy was difficult to diagnose at 11 weeks of pregnancy. However, ultrasonography revealed intrauterine pregnancy with intrapelvic hemorrhage. Concomitant intrauterine and extrauterine pregnancies or interstitial pregnancy should be considered.