T-sign is seen in: (A) Diamniotic Monochorionic, (B) Dichorionic Diamniotic, (C) Monochorionic monoamniotic, (D) Dichorionic Monoamniotic
Answer is A. The "T sign" and Twin-peak sign(or lambda (l)sign) and is used in ultrasound assessment of multifetal pregnancy. T sign refers to the thin intervening septa denoting a Monochorionic pregnancy. Twin peak sign/Lambda sign denotes Dichorionic Diamniotic Twin Gestation