The aim of this study was to analyze clinical treatment and outcome of injection MTX for Cesarean scar pregnancy (CSP). We use retrospective study to compare the time in CSP of blood chorionic gonadotropin (β-HCG) and progesterone drooped to the normal, blood flow resistance and hospitalization days. 34 patients diagnosed with CSP were reviewed in our department from 2000 to 2013, including clinical characteristics, early diagnosis, treatment methods and treatment outcome. All patients were

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... ded into B ultrasound-guided gestational MTX inject group (Group one), local intramuscular treatment group (Group two) and uterine artery perfusion MTX group (Group three). All cases had responded well to treatment. Except three cases of local intramuscular serum β-HCG decreased slowly MTX 10 mg intramuscular again, the average serum β-HCG decline of 65% the 4th day after treatment. In intramuscular group, the average length of stay is 19 ± 2.1 days. Serum β-HCG, progesterone recovery time were 20 to 89 days, an average of 54.5 days. B ultrasound-guided group hospital stay were 15 ± 3.1 days, serum β-HCG, progesterone recovery time were 18 to 71 days, an average of 44.5 days. In Uterine artery embolization group, the average length of stay is 16 ± 2.4 days, serum β-HCG, progesterone recovery time were 20 to 70 days, an average of 45 days. Statistical data results using T-test and chi-square test analysis. Three groups of β-HCG, progesterone decreased to normal days the difference was statistically significant (P < 0.05), but uterine artery embolization group and ultrasound-guided group B showed no significant difference (P > 0.05). B ultrasound-guided gestational injection of MTX and uterine artery embolization perfusion MTX are the better ways to treat uterine scar pregnancy.