Abstract
In 50 patients lesions located in or adjacent to the motor strip were microsurgically removed with the help of intra-operative electrophysiological mapping of the sensorimotor cortex. Mapping consisted of cortical stimulation and/or recording of somatosensory evoked potentials. Depending on the patient's pre-operative neurological status, surprisingly good results could be achieved: The surgery resulted in increased permanent sensorimotor deficit in only 4% of cases and in improved neurological status in 30% of cases. It is concluded that surgical removal of centrally located lesions using a microsurgical technique and intra-operative mapping of the motor cortex is safe and permits extensive or radical resection of lesions, even those in the motor cortex itself.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Adult
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Aged
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Brain Mapping / methods*
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Brain Neoplasms / physiopathology
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Brain Neoplasms / secondary
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Brain Neoplasms / surgery*
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Cerebral Cortex / physiopathology
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Cerebral Cortex / surgery*
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Dominance, Cerebral / physiology
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Electric Stimulation
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Electroencephalography*
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Evoked Potentials, Somatosensory / physiology
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Female
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Humans
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Intracranial Arteriovenous Malformations / physiopathology
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Intracranial Arteriovenous Malformations / surgery*
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Male
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Median Nerve / physiopathology
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Meningeal Neoplasms / physiopathology
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Meningeal Neoplasms / surgery
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Meningioma / physiopathology
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Meningioma / surgery
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Middle Aged
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Monitoring, Intraoperative*
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Motor Cortex / physiopathology
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Motor Cortex / surgery*
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Neurologic Examination
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Postoperative Complications / physiopathology
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Somatosensory Cortex / physiopathology
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Somatosensory Cortex / surgery