Twin peak sign seen in
Twin peak or lambda sign it is characterized of dichorionic pregnancies and is due to the chorionic tissue between the two layers of the intewin membrane at the placental origin . twin peak appears as a triangle with base at chorionic surface and apex in intewin membrane.
Monochorionic Monoamniotic
Monochorionic Diamniotic
Dichorionic Diamniotic
Dichorionic Monoamniotic
JIPMER 2018