Fat graft-assisted internal auditory canal closure after retrosigmoid transmeatal resection of acoustic neuroma: Technique for prevention of cerebrospinal fluid leakage

Highlights • CSF leakage can occur after retrosigmoid transmeatal resection of acoustic neuroma. • We describe our technique of internal auditory canal closure using fat graft. • The technique, results, and complications are reported in 24 consecutive patients. • There were no instances of postoperative CSF leakage using this technique. • Fat grafts are viable options for repairing IAC defects to prevent CSF leakage.