What's your diagnosis in this 26-week pregnancy?

Image courtesy of Durr-E-Sabih, MBBS, FRCP

1. Placental surface cyst – chorionic cyst

In this case, the cyst is large and located just below the surface of the placenta and bulges into the amniotic cavity. The nature of the content of the cyst is hypoechoic fluid. This could represent cystic change of a subamniotic hematoma resulting in a chorionic cyst. Medical literature considers this an incidental finding that has little clinical significance.

Pregnancy and Birth

Challenge your diagnostic skills: What’s causing this bubble-like bulge?