Abstract: Objective： To assess the efficacy and safety of uterine arteries embolization （UAE） for the treatment of cesarean scar pregnancies （CSP） and cervical ectopic pregnancy （CEP）. Methods：A prospective study for case series of seventy-six women with CSP and fourteen women with CEP were accurately identified by Tianjin Central Hospital of Gynecology Obstetrics between April 1，2011 and April 1，2013. All of the patients underwent UAE combined with methotrexat （MTX）. Results：All of the patients were successfully treated without any severe adverse reactions or complications，and did not need a repetitive uterine artery embolism or uterus resection or partial resection of the local lesions. No significant differences of blood loss were seen between whether the embryo was alive before UEA（CSP：t=0.234；CEP：t=0.730，P＞0.05）. There is no correlation between beta-human chorionic gonadotropin level before UAE and blood loss. The difference was found to be statistically significant between whether the beta-human chorionic gonadotropin level dropped obviously（CSP：t=-6.683；CEP：t=-5.461，P=0.000），and the difference was also found significant between the different types of CSP（t=5.731，P=0.000）.The complications were mainly fever and abdominal pain； 70 patients were followed up，and all of them had recovered their normal menstruation . Conclusions：UAE with MTX appears to be a safe and effective treatment for CSP and CEP.

Key words: Cesarean section, Cicatrix, Pregnancy, Embolism, Therapy