Ultrasonographic abnormalities of the chorio-decidual membrane and its relation to abortion and vesicular mole formation

Two groups of sonographic abnormalities of the developing chorio-decidual membrane were detected. The first is an absent, defective and irregular appearance; the second is complete or incomplete thickening of the chorio-decidual membrane. The first group of abnormalities is associated with abortion in 90% of cases, while in the second 37.5% of cases end as vesicular moles and 50% as missed abortions. Focused ultrasonography of the choriodecidual membrane should be used, in conjunction with the other data reported, for proper determination of the outcome of pregnancy