Safe surgery of lesions near the motor cortex using intra-operative mapping techniques: a report on 50 patients.
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.
Ebeling
U
U
Neurosurgical Clinic, University of Berne, Switzerland.
Schmid
U D
UD
Ying
H
H
Reulen
H J
HJ
D000328:Adult; D000368:Aged; D001931:Brain Mapping / Q000379:methods*; D001932:Brain Neoplasms / Q000503:physiopathology / Q000556:secondary / Q000601:surgery*; D002540:Cerebral Cortex / Q000503:physiopathology / Q000601:surgery*; D004292:Dominance, Cerebral / Q000502:physiology; D004558:Electric Stimulation; D004569:Electroencephalography; D005073:Evoked Potentials, Somatosensory / Q000502:physiology; D005260:Female; D006801:Humans; D002538:Intracranial Arteriovenous Malformations / Q000503:physiopathology / Q000601:surgery*; D008297:Male; D008475:Median Nerve / Q000503:physiopathology; D008577:Meningeal Neoplasms / Q000503:physiopathology / Q000601:surgery; D008579:Meningioma / Q000503:physiopathology / Q000601:surgery; D008875:Middle Aged; D016343:Monitoring, Intraoperative; D009044:Motor Cortex / Q000503:physiopathology / Q000601:surgery*; D009460:Neurologic Examination; D011183:Postoperative Complications / Q000503:physiopathology; D013003:Somatosensory Cortex / Q000503:physiopathology / Q000601:surgery