2025 Proffered Presentations
V081: DIRECT ELECTROMYOGRAPHIC MONITORING OF THE LATERAL RECTUS MUSCLE DURING FRONTOTEMPORAL-ORBITOZYGOMATIC APPROACH FOR RESECTION OF A SUPERIOR ORBITAL FISSURE SCHWANNOMA
Rithvik Ramesh, BA1; Maximiliano Nuñez, MD2; Wesley Shoap, MD3; Ezequiel Goldschmidt, MD, PhD1; 1University of California, San Francisco; 2Stanford University; 3Louisiana State University
The resection of orbital schwannomas is challenged by their proximity to oculomotor cranial nerves. Here, we present a case in which needle electrodes were placed retro-orbitally for electromyographic monitoring of the lateral rectus muscles during a frontotemporal-orbitozygomatic approach for the resection of a large superior orbital fissure schwannoma in a 39-year-old woman presenting with right CN VI palsy and proptosis. Postoperatively, MRI showed near total resection and her exam demonstrated resolution of the right-sided proptosis.