Lateralizing significance of figure"4"sign in patients with mesial temporal lobe epilepsy / 中华神经科杂志

ABSTRACT

Objective To investigate the lateralizing value of figure"4"sign,an asymmetrical tonic posturing observed in secondarily generalized tonic-clonic seizures(sGTC),in patients with mesial temporal lobe epilepsy.Methods Presurgical videotapes of 54 sGTC from 33 patients who were seizure-free for at least 4 years after temporal lobectomy were retrospectively reviewed.Attention was paid to the relationship between the extended upper extremity in figure"4"sign and the resected side.Results The "4"sign was observed in 10(30%)of 33 patients and 23(43%)of sGTC.The extended arm in figure "4"sign was always contralateral to the epileptogenic foci(resected side).Conclusion"4"sign has a significant lateralizing value,when present,in this selected homogeneous group of patients.