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Panel A. Case 1, age 8. EEG at LGS diagnosis, showing generalized 1.5–2 Hz SSW discharges with frontal predominance, intermittent spike–waves predominating in the left occipital region, and poorly formed posterior rhythm.
Panel B. Case 1, age 12. EEG 4 years after diagnosis, showing low-amplitude background activity with infrequent low-amplitude generalized discharges and infrequent multifocal sharp waves.
