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FLAIR sequence—axial section.
T1-weighted image (T1WI), T2-weighted image (T2WI), and fluid-attenuated inversion recovery (FLAIR) sequences showing elongated and thickened superior cerebellar peduncles (marked by blue arrow) with hypoplasia of isthmus and deep cleft along anterior midbrain (marked by red arrow) giving characteristic molar tooth sign as marked by white arrows. Interpeduncular fossa is also widened. There is associated hypoplasia of cerebellar vermis.
