From the case: Twin-peak sign

Ultrasound
Transverse image ...
Transverse image of the placenta reveals a triangular peak of villi extending from the placenta into the intertwin membrane.
Modality: Ultrasound

- “ 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 articles:

  • Twin-peak sign (twin pregancy) - “ The twin peak sign (also known as the lambda (λ) sign) is a triangular appearance of the chorion insinuating between the layers of the inter twin ...”
  • Dichorionic diamniotic twin pregnancy - “ A dichorionic diamniotic (DCDA) twin pregnancy is a type of twin pregnancy where each twin has its own chorionic and amnionic 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 s...”

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