The objective of this retrospective study was to explore a novel surgical technique, transvaginal hysterotomy combined with methotrexate injection, for treatment of cesarean scar ectopic pregnancy in 12 patients. All patients underwent the operation. Mean (SD; 95% CI) operative time was 21.6 (7.3; 17.0-26.2) minutes, and intraoperative blood loss was 90.8 (59.6; 52.9-128.7) mL. Postoperative ultrasonography confirmed removal of the pregnancy sac. The length of hospital stay was 7.4 (3.7; 5.0-9.8) days. The first normal postoperative menstrual period was at 28.3 (5.6; 24.7-31.9) days after surgery. The serum β-human chorionic gonadotropin concentration returned to normal at 15.8 (6.3; 11.8-19.8) days. We conclude that surgical removal of the ectopic sac via transvaginal hysterotomy combined with methotrexate injection during the operation is a potentially good new approach to treatment of cesarean scar ectopic pregnancy. The efficacy and safety of the technique need further confirmation in future studies.
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