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We describe the sonographic appearance of two cases of uterine scar separation in patients with prior cesarean deliveries. In the first case, the anteriorly located placenta appeared to be a placenta previa with accreta and in the second case the placenta was also located directly beneath the uterine scar thus masking a separation until the third stage of labor was complete. These two cases demonstrate an unusual sonographic and clinical presentation of uterine scar separation involving anteriorly located placentas.
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Bromley et al. (1995) studied this question.
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