Bilateral epidural D-wave monitoring during resection of an eccentric cervical astrocytoma with evidence of asymmetrical corticospinal desynchronization.

To the authors' knowledge this is the first description of bilateral D-wave monitoring as an adjunct to cranial-caudal D-wave montages during IMSCT surgery. In patients with corticospinal desynchronization evidenced by abnormal midline D-wave morphology, bilateral D-wave monitoring in conjunction with routine evoked potentials may be clinically indicated for preservation of motor function and promotion of safe and maximal resection.