G3 L2. 17 wks of amenorrhoea. No complaints.
Single live fetus showed growth corresponding to LMP. No fetal abnormality is seen.
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Static images show rolled up placental edge in all four quadrants. In real time scan, rolled up placental edge was involving 360 degree of placenta. There is no retro-placental collection.
Case shows placental morphological variation - circumvallate placenta. It shows rolled up / uplifted placental edge. It is called as complete circumvallate placenta if 100 % ( 360 degree ) of placental circumference involved. If it is less than that; it is called as partial circumvallate placenta. Complete type shows higher risk of complications like placental abruption, preterm labour, IUGR.
- Ultrasound in Obstetrics and Gynacology. 4th Edition. Peter W. Callen, MD