Differential Diagnosis of Cesarean Scar Pregnancies and Other Pregnancies Implanted in the Lower Uterus by Ultrasound Parameters

Figure 1

Ultrasound image of the implantation site. A small amount of fluid was observed inside the endometrial cavity, which delineated the border of the hyperechoic ring around the conceptus. The dotted line indicated the endometrial lumen, and the solid line indicated the implantation site.