Document Detail

Somatosensory evoked potentials and magnetic resonance imaging in intraspinal neoplasms.
MedLine Citation:
PMID:  1690109     Owner:  NLM     Status:  MEDLINE    
Median and posterior tibial somatosensory evoked potentials (SEPs) were studied on 25 patients with pathologically proven intraspinal neoplasms, and the results were compared and correlated with the details of clinical examination and the information derived from magnetic resonance imaging (MR). MR was abnormal in all cases and in 23 of 25 (92%) demonstrated an intraspinal expansile lesion. SEP was abnormal in 19 of 25 patients (76%). Abnormal SEPs were found in 18 of 19 patients (94%) with cervical or thoracic neoplasms but only in 1 of 6 patients (16%) with the tumor in the thoracolumbar or lumbar region. SEP-MR correlation was significant (P less than 0.05) for thoracic intraspinal neoplasms where all 9 had an abnormal SEP showing a similar pattern of normal median and abnormal posterior tibial study. Clinically, all 7 patients with posterior column sensory deficits had abnormal SEP (100%). Abnormal SEPs were seen in 7 of 11 (63%) patients with spinothalamic deficits and in 4 of 8 (50%) of those with normal sensory examinations. Four of 9 patients (44%) with a normal neurological examination or an examination disclosing ambiguous results indistinguishable from a peripheral pathology had an abnormal SEP strongly suggesting a central sensory disorder. Comparison of preoperative and postoperative SEPs did not disclose useful prognostic information pertaining to the functional recovery.
B Jabbari; C Geyer; M Schlatter; B Scherokman; M Mitchell; J W McBurney; C Elbrecht; C H Gunderson
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Electroencephalography and clinical neurophysiology     Volume:  77     ISSN:  0013-4694     ISO Abbreviation:  Electroencephalogr Clin Neurophysiol     Publication Date:    1990 Mar-Apr
Date Detail:
Created Date:  1990-04-17     Completed Date:  1990-04-17     Revised Date:  2008-09-09    
Medline Journal Info:
Nlm Unique ID:  0375035     Medline TA:  Electroencephalogr Clin Neurophysiol     Country:  IRELAND    
Other Details:
Languages:  eng     Pagination:  101-11     Citation Subset:  IM    
Neurology Service, Walter Reed Army Medical Center, Washington, DC 20307-5001.
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MeSH Terms
Evoked Potentials, Somatosensory*
Magnetic Resonance Imaging*
Median Nerve / physiopathology
Middle Aged
Spinal Neoplasms / pathology,  physiopathology*
Tibial Nerve / physiopathology

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