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Left unilateral open-lip cleft in the parietotemporal region (MRI)

The cleft is lined by polymicrogyric cortex; the left lateral ventricle is enlarged and shows a dimple where it communicates with the cleft. (Contributed by Dr. Geoffrey Miller.)

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Associated Disorders

  • Absence of septum pellucidum
  • Optic nerve hypoplasia
  • Polymicrogyria