1 MCQs in Radiology for NEET PG
A 31-year-old woman presents for a dating ultrasound at 12 weeks 3 days with a spontaneously conceived dichorionic twin pregnancy. On transabdominal ultrasound, two separate placental masses are identified on opposite uterine walls. At the point where the inter-twin membrane meets the anterior placenta, a thick triangular tongue of placental tissue is seen projecting into the base of the membrane (marked **A** in the diagram). Which of the following best describes the significance of the structure marked **A** in confirming chorionicity?
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