Preferred Label : twin peak sign;
RADLEX synonyms : twin peaks; lambda sign;
Definition : Triangle of placental tissue projects to the intertwin membrane on ultrasound of a
multiple pregnancy. Both the chorion and the amnion reflect from the placental surface,
indicating a dichorionic pregnancy.;
Source : Radiology 2001; 220:68-69;
Origin ID : RID35669;
Associated condition(s)
Triangle of placental tissue projects to the intertwin membrane on ultrasound of a
multiple pregnancy. Both the chorion and the amnion reflect from the placental surface,
indicating a dichorionic pregnancy.
