LAMBA SIGN OR TWIN PEAK SIGN on Ultrasonography is a finding of A.Dichorionic Diamniotic pregnancy B.Monochorionic Monoamniotic pregnancy C.Ectopic pregnancy D.Molar pregnancy
The twin peak sign (also known as the lambda (Ξ») sign) is a triangular appearance of the chorion insinuating between the layers of the inter twin membrane and strongly suggests a dichorionic twin pregnancy. It is best seen in the first trimester (between 10-14 weeks)