Awake surgery versus VEP in tumors of visual pathway: Case report

• Main Authors: Silvia Mazzali Verst, Monica Nascimento de Melo, Andrea Sucena Caivano, Ubirajara Sabbag Fonseca, Luis Roberto Mathias, Jr., Tatiana Vilasboas Alves
• Format: Article
• Language: English
• Published: Elsevier 2020-06-01
• Series: Interdisciplinary Neurosurgery
• Online Access: http://www.sciencedirect.com/science/article/pii/S2214751919303603

We report the case of a patient undergoing two surgeries in the right and left occipital lobes for resection of primary central nervous system tumor at different times. The first approach was performed in the left hemisphere, with the patient awake and, five months later, the second approach was performed in the right hemisphere, with the use of VEP for the study of the visual pathways. Both procedures were performed by the same surgical team, anesthesiologist and intraoperative monitoring neurophysiologist. Nevertheless, the outcomes were different, and the patient evolved with a left inferior temporal quadrantanopia after the second surgery, a deficit not detected by VEP.