Abstract
Visual evoked potential (VEP) is a useful tool for monitoring the visual pathway during surgery. We report two cases with pituitary adenoma who had intraoperative VEP monitoring during the tumor removal surgery via the transsphenoidal approach. One case had transient delayed VEP latency during the tumor removal. The other case had transient decreased VEP amplitude with recovery to the baseline. Our two cases had no postoperative visual impairment. Intraoperative VEP monitoring could be applied during the surgical treatment of the lesion near the visual pathway such as the pituitary adenoma.
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