Journal of pediatric neurosciences
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Joubert syndrome (JS) is a rare autosomal recessive disorder with key finding of cerebellar vermis hypoplasia with a complex brainstem malformation that comprises the molar tooth sign on axial magnetic resonance images. This syndrome is difficult to diagnose clinically because of its variable phenotype. ⋯ We present a case of JS in a 7-month-old girl who presented to the pediatric outpatient clinic with developmental delay and abnormal eye movements. MRI showed molar tooth configuration of superior cerebellar peduncles, the fourth ventricle shaped like a bat wing and hypoplasia of the vermis which resulted in median approach of the two cerebellar hemispheres.