腦轉移產生皮質視覺障礙病患正常視覺誘發電位知病例報告

Preserved Visual Evoked Potential in One Case with Cortical Visual Impairment Secondary to Brain Metastasis

視覺誘發電位是由視皮質因對光刺激而產生，因此視覺路徑任何損傷可導致異常的誘發電位。皮質視覺損傷常造成視覺誘發位喪失，本篇我們提出一罕見因子宮內膜癌發生腦轉移造成皮質視覺受損但保有可測得的誘發電位病例報告。

 

The visual evoked potential (VEP) is generated from the visual cortex in response to light stimulus. Abnormal VEP is usually observed with any lesions along the visual pathway. Cortical visual impairment (CVI) is a visual dysfunction caused by a number of cortical insults. Extinguished VEP is typically seen in patients with CVI. We report a rare case of CVI secondary to brain metastasis from endometrial carcinoma with detectable VEP response and the possible pathomechanisms related to the findings.