剖宫产术后子宫瘢痕处妊娠(cesarean scar pregnancy,CSP)是指孕卵种植在剖宫产后子宫瘢痕处并在此处生长发育[1],是一种特殊类型的异位妊娠,占剖宫产后异位妊娠的0.045%[2]。因其在妊娠早期侵入子宫肌层,易发生子宫破裂及相关并发症,所以被认为比前置胎盘危险性更高[3]。近年来随着剖宫产率的上升其发病率有明显增加趋势。本研究对我 Cesarean scar pregnancy (CSP) after cesarean section refers to the pregnancy of an egg in a uterine scar after cesarean section and its growth and development [1]. It is a special type of ectopic pregnancy, accounting for Cesarean post-ectopic pregnancy 0.045% [2]. Because of its invasion of the myometrium in early pregnancy, prone to rupture of the uterus and related complications, it is considered more dangerous than the placenta previa [3]. In recent years, with the rise of cesarean section its incidence has increased significantly. This study to me