Table 1.
Demographic, clinical, electrophysiological and neuroimaging data of patients with polymicrogyria
| Patient/age (yr)/gender | Age at seizure onset (yr) | Seizure types | Examination/neuropsychology | Visual fields | EEG | MRI |
|---|---|---|---|---|---|---|
| 1/21/M | 14 | CPS, SG | Normal exam/average IQ | Normal | I: Bil. temporal, independent, R>L | Bil. occipital and insular polymicrogyria; Bil. peri‐ventricular nodular heterotopias posteriorly |
| 2/44/M | 10 | SPS, SG | Mild right‐sided hemiatrophy and paresis/mild‐moderately deficient IQ | Normal | I: normal | Bil.parieto‐occipital and L perisylvian polymicrogyria |
| 3/34/M | 10 | CPS, SG | Normal exam/neuropsychology not performed | Normal | I. R tempero‐parietal; II. bilateral tempero‐parietal | Bil. mesial occipital lobe polymicrogyri with heterotopic gray matter extending from involved cortex to occipital horns; small L supra‐vermian lipoma |
M, male; CPS, complex partial seizures; SG, secondary generalized seizures; I, interictal epileptic abnormalities; II, seizure onset; Bil., bilateral; R, right; L, left; SPS, simple partial seizures.