Clinics in diagnostic imaging (118)
Subramanian, S.; Hari, S.; Santosh Kumar, S.
Singapore Medical Journal 48(9): 869
2007
ISSN/ISBN: 0037-5675 PMID: 17728972 Document Number: 610029
An 18-month-old boy presented with delayed milestones, hypotonia, strabismus and an episode of seizure. Magnetic resonance (MR) imaging of the brain revealed abnormally-oriented and thickened superior cerebellar peduncle, giving rise to the characteristic molar tooth sign on axial images. The isthmus was thinned out, with widened interpeduncular cistern and hypoplastic vermis. The clinical and MR imaging features were diagnostic of Joubert syndrome.