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Left cerebellar and inferior vermian hypoplasia with a CSF cleft communicating with a dilated 4th ventricle. Supratentorial ventriculomegaly. The MRA reveals a hypoplasia of the ipsilateral internal carotid artery as well as the M1 middle cerebral artery segment. An ipsilateral facial (mainly periorbital) enhancing soft tissue mass is noted suggestive of a haemangioma.