1.  Axial (A) and sagittal T1 weighted (B) magnetic resonance images showing bilateral perisylvian polymicrogyria.
 Axial (A) and sagittal T1 weighted (B) magnetic resonance images showing bilateral perisylvian polymicrogyria. The axial slice displays bilateral inward folding of abnormal cortex in the posterior segments of the sylvian fissure bilaterally. The multiple small gyri are better demonstrated in the sagittal plane. Photograph courtesy of Dr R Leventer
A Jansen, and E Andermann J Med Genet 2005;42:
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