From the case: Twin-peak sign


Antenatal US (selected images)

Modality: Ultrasound (Transverse)

- “ The twin peak sign indicates the presence of a dichorionic-diamniotic twin gestation. It represents the extension of placental villi into the pote...”

Used in the following article:

  • Twin-peak sign (twin pregnancy) - “ The twin peak sign (also known as the lambda (λ) sign) is a triangular appearance of the chorion insinuating between the layers of the intertwin m...”
  • Dichorionic diamniotic twin pregnancy - “ A dichorionic diamniotic (DCDA) twin pregnancy is a type of twin pregnancy where each twin has its own chorionic and amniotic sacs. This type occu...”
  • Twin pregnancy - “ Twin pregnancies are the most common multifetal pregnancies.  Epidemiology Multifetal pregnancies account for ~ 1% of all pregnancies but are se...”

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