Acquired uterine arteriovenous fistula due to a previous cornual pregnancy with placenta accreta: A case report.

The present report describes a case of an acquired uterine arteriovenous fistula, which, following surgery and postoperative pathological analysis, was confirmed as a previous cornual pregnancy with placenta accreta. The patient was a 37-year-old woman (gravida 3; para 2) who had previously delivered two children via cesarean section (in 2004 and 2010, respectively) and also had a spontaneous abortion (2008). She had experienced continuous menstrual bleeding for 20 days and had a history of prolonged (30 days) vaginal bleeding 13 months earlier. Other pregnancy-related diseases were excluded following a negative serum human chorionic gonadotropin test, and the diagnosis was confirmed by Doppler ultrasonography. An emergency hysterectomy was subsequently performed due to the large amount of vaginal bleeding. Postoperative pathology confirmed the uterine arteriovenous malformation and demonstrated that the cause was a previous cornual pregnancy with placental implantation. The patient successfully recovered following the surgery.