Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology · 2006
Complete change of seizure and spike lateralization in temporal lobe epilepsy at two separate monitorings.
Клинический случайСтатьяНазвание и аннотация: Перевод в очереди
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Koukou Areti, Dupont Sophie, Szurhaj William, Baulac Michel, Derambure Philippe, Adam Claude
Аннотация
OBJECTIVE: To report complete change of seizure and spike lateralization over time in bilateral temporal lobe epilepsies (TLE).
METHODS: Repetition of video-EEG monitorings in 115 patients; 2 cases are reported in detail; 113 other severe partial epilepsies were included to estimate retrospectively the frequency of the reported phenomenon.
RESULTS: In 2 cases, two video-EEG monitorings, separated by several months, revealed the first time one unilateral TL (temporal lobe) seizure and spike focus and the second time a distinct seizure and spike focus located in the opposite TL. The second monitoring was planned for these two patients because of the presence of a discordant lesion or, in the absence of a lesion, of some bilateral or discordant functional (EEG, SPECT and PET) abnormalities. No patient among the other 113 cases had this video-EEG pattern.
CONCLUSIONS: In TLE, two video-EEG sessions may be necessary to disclose two opposite TL epileptogenic foci.
SIGNIFICANCE: In rare bilateral TLE cases, the expression of seizure and spike foci can alternate between hemispheres.
METHODS: Repetition of video-EEG monitorings in 115 patients; 2 cases are reported in detail; 113 other severe partial epilepsies were included to estimate retrospectively the frequency of the reported phenomenon.
RESULTS: In 2 cases, two video-EEG monitorings, separated by several months, revealed the first time one unilateral TL (temporal lobe) seizure and spike focus and the second time a distinct seizure and spike focus located in the opposite TL. The second monitoring was planned for these two patients because of the presence of a discordant lesion or, in the absence of a lesion, of some bilateral or discordant functional (EEG, SPECT and PET) abnormalities. No patient among the other 113 cases had this video-EEG pattern.
CONCLUSIONS: In TLE, two video-EEG sessions may be necessary to disclose two opposite TL epileptogenic foci.
SIGNIFICANCE: In rare bilateral TLE cases, the expression of seizure and spike foci can alternate between hemispheres.