PMC7381274_01
Brain magnetic resonance imaging (MRI) revealed a closed-lip schizencephalic cleft in the right hemisphere (A), and non-schizencephalic focal cortical dysplasia in the left hemisphere (B).
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F1
He had a bilateral congenital brain lesion, which was identified by a brain MRI, as a closed-lip schizencephalic cleft in the right hemisphere and focal cortical dysplasia in the left hemisphere (Figure 1).
Recording of the right and left first dorsal interossei motor evoked potentials during transcranial magnetic stimulation (TMS). There was ipsilateral and contralateral first dorsal interossei response during left cortex stimulation (A). Also, there was a contralateral first dorsal interossei response during the right cortex stimulation (B).
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F2
We also observed cMEPs on the patient's paretic hand (latency, 23.7 +- 0.4 ms; amplitude, 153.8 +- 25.7 muV; duration, 25 ms) during right hemisphere stimulation (Figure 2).
Axial color map showing right-sided cleft extension to the midline (arrow), leading to interruption of the superior corona radiate, which contained the corticospinal projections and thalamocortical fibers in blue color.
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F3
Distorted and deviated white matter bundles were also visualized around the schizencephalic cleft (Figure 3).