Electroencephalographic analysis of malignant melanoma patients.
EEGs carried out in 202 patients with melanoma were abnormal in 33%. In the absence of systemic or brain metastasis 14% of the patients had abnormal records. If systemic metastases without brain metastasis were present 45% of the patients had abnormal records and with brain metastasis 88% had abnormal EEGs. Only a third of the patients with abnormal records had brain metastasis but metastatic spread to some organ system was present in 76% of those with EEG abnormalities. The diffuse abnormality was less likely to be a "false positive." Ninety-seven percent of the patients with diffuse EEG abnormality had systemic metastasis but 43% of the patients with focal EEG changes had no detected metastasis.
D000293:Adolescent; D000328:Adult; D000368:Aged; D001932:Brain Neoplasms / Q000175:diagnosis* / Q000473:pathology; D002648:Child; D004569:Electroencephalography; D005260:Female; D006801:Humans; D008297:Male; D008545:Melanoma / Q000175:diagnosis* / Q000473:pathology; D008875:Middle Aged; D009362:Neoplasm Metastasis / Q000175:diagnosis* / Q000473:pathology; D009367:Neoplasm Staging