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Affect of congenital aplasia of part of left cerebbelar hemisphere

I am a school psychologist trying to determine what affect on learning on a child diagnosed at age 5 through an MRI with a "congenital aplasia of the portion of the left cerebellar hemisphere subserved by the left anterior inferior branchof the basilar artery."  Report says "the apparent 4X3 cm. "cyst" of the left posterior fossa really just represents CSF in subarachnoid space filling the area left by the absent left cerebellar hemisphere.  Arachnoid cysts of this size would have mild mass effect and erosion and there is none.  There is also contralateral mild hypoplasia of the right pons and right cerebral peduncle."  Also some left exotropia.

This child is now 8 and is having significant academic problems.  Are these problems likely related to the brain issues?

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