Dexamethasone-Adjuvanted Scalp Block and Total Intravenous Anesthesia for Endoscopic Transsphenoidal Resection of a Giant Sellar-Suprasellar Rathke Cleft Cyst: An Observational Analytic Case Study. JACR. 2026;7(2):315-329. doi:10.37275/jacr.v7i2.981