Möbius Syndrome and Cerebellar Dysplasia: A Novel Association

We present a case of a 4-month-old infant with abnormal eye movements, unusual flat facies, and lack of expression during crying, clinically diagnosed with Möbius syndrome. MR imaging demonstrated absent facial and abducens nerves. A dysplastic right cerebellar hemisphere containing a cleft and multiple clustered cysts was also observed, which, to our knowledge, represents the first documented case of an association between Möbius syndrome and cerebellar dysplasia. A review of pertinent literature is provided.