Gamma Knife Radiosurgery-Induced Acute Facial Palsy in Vestibular Schwannoma: A Case Report.

Stereotactic radiosurgery-induced facial palsy is typically a late-onset complication, with acute-onset cases being exceedingly rare.

Baseline facial nerve function was intact.

Magnetic resonance imaging obtained on post-treatment day 6 demonstrated reduced contrast enhancement, partial capsular breakdown, and central hypointensity within the tumor, suggestive of acute necrotic change.