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Washington University Experience | DEVELOPMENTAL MALFORMATIONS | Atelencephaly-Aprosencephaly | 1A1 Aprosencephaly-Atelencephaly spectrum (Case 1) 1
1A1-3 In this case the external appearance of the head shows very few recognizable landmarks and optic aplasia. The cerebral hemispheres are entirely missing with loss of basal ganglia and much of the thalamus with preservation of brainstem and cerebellum.