2025 Poster Presentations
P404: SURGICAL TREATMENT OF SUPRASELLAR DERMOID CYST VIA ENDOSCOPIC ENDONASAL APPROACH
Anna McCracken, BHSc1; Rebecca Yakubov, BHSc, MSc1; Jonathan Chainey, MD, MSc2; Gelareh Zadeh, MD, PhD1; 1MacFeeters Hamilton Neuro-Oncology Program, Princess Margaret Cancer Centre, University Health Network and University of Toronto, ON, Canada.; 2Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada.
We present the case of a 35-year-old patient demonstrating diplopia secondary to complete right third nerve palsy. An MRI revealed a dermoid cyst in the right suprasellar cistern, deforming the right cerebral peduncle. Near-total resection of the lesion was accomplished via an endoscopic endonasal approach. An intraoperative decision was made to split the pituitary gland to access the lesion, which was well tolerated without postoperative hormonal dysfunction. The patient’s third nerve palsy also improved postoperatively.