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Arteriovenous Malformation
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ultrasound a b b
  A 29 week fetus with intracranial arterovenous malformation. Note the enlarged heart and tortuous vessel going up through the neck.
mri c d e
  MRI shows the feeding vessels (arrows) to be of external carotid origin in this Dural AVM, which directed postnatal angiogram (below).   Cardiomegaly is a direct result of the AVM.
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