凡受精卵在子宫腔以外的器官或组织中着床发育,称为异位妊娠,又称宫外孕,是妇产科的急腹症之一[1]。若受精卵、绒毛或胚胎着床于子宫既往剖宫产瘢痕处,即为剖宫产子宫瘢痕处妊娠(CesareanScar Pregnancy,CSP)[2],其危险性极大,常因误诊行清宫术中发生致命性大出血,甚至需切除子宫。超声诊断对其具有较特异的超声图像特征,能够早 All fertilized eggs in the uterine cavity outside the organ or tissue implantation, known as ectopic pregnancy, also known as ectopic pregnancy, obstetrics and gynecology is an acute abdomen [1]. If the fertilized egg, villi or embryo implantation in the uterus in the past cesarean scar, that is, cesarean uterine scar pregnancy (CSP) [2], the risk is extremely high, often misdiagnosed in the curettage A fatal bleeding occurs and even the uterus needs to be removed. Ultrasound diagnosis of its more specific features of ultrasound images, to early