[Electroencephalogram changes of meningioma].

Electroencephalogram (EEG) was used in investigating 42 cases of meningiomas proved by operations and pathological examinations. The abnormality rate of EEG was 95.24%. Compared with the clinical findings, the accuracy rate of EEG lesion-location was 64.29%; the accuracy rate of EEG lesion-side location was 26.19%; the total accuracy rate of lesion-location and lesion-side location was 90.48%. The EEG characteristics and the value of location diagnosis of meningioma were discussed. This indicates that EEG is still an important supplementary diagnostic method of intracranial meningioma.