I saw the "molar tooth" sign: A bite into Joubert syndrome.

The molar tooth sign is a radiologic sign seen on magnetic resonance imaging (MRI) that indicates Joubert syndrome, a rare congenital hindbrain malformation. It refers to the characteristic appearance of thickened and horizontally oriented superior cerebellar peduncles with a deepened interpeduncular fossa and vermian hypoplasia, resembling a "molar tooth" on axial imaging. Recognition of this sign is crucial for early diagnosis and appropriate clinical management of this multisystem disorder.