butterfly sign (choroid plexus)

The butterfly sign refers to the normal appearance of the choroid plexuses on axial imaging of the fetal brain, commonly observed on the antenatal ultrasound. Its absence may suggest holoprosencephaly .

In the CNS, the term should not be confused with a butterfly glioma, which is a glioblastoma that crosses the midline via the corpus callosum, observed in a different age group.

Siehe auch:

• Holoprosencephalie

und weiter:

• butterfly sign