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Scars from cesarean sections have been identified as out-pouchings on hysterosalpingograms that are performed between pregnancies. These investigators tested the ability of transvaginal ultrasound to detect such scars. Asymptomatic women who were not taking hormones were recruited to undergo transvaginal ultrasound of the cervix, uterus, and adnexa during days 8 to 11 of their menstrual cycles. The women also completed questionnaires regarding their obstetric histories, and investigators and technicians were blinded to these histories.
Of 70 women who were enrolled, 38 had prior vaginal deliveries only, and 32 had prior cesarean deliveries. Cesarean scars were detected by the presence of a hyperechoic linear density through the uterus near t…