Twin-peak sign

Case contributed by Dr Bruno Di Muzio

Presentation

22 weeks twin pregnancy. Routine antenatal ultrasound.

Patient Data

Age: 22 weeks gestation
Gender: Female
Modality: Ultrasound

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

Case Discussion

The twin peak sign indicates the presence of a dichorionic-diamniotic twin gestation. It represents the extension of placental villi into the potential space that is formed from the reflection of apposed amniotic and chorionic layers from each fetus.

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Case Information

rID: 12931
Case created: 4th Feb 2011
Last edited: 20th Feb 2016
System: Obstetrics
Inclusion in quiz mode: Included

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