Arachnoid bands in hemifacial spasm: an overlooked etiology? Illustrative case
Mariam Al-Mutawa,
Henry W. S Schroeder
Abstract:BACKGROUND
Primary hemifacial spasm (HFS) is usually caused by arterial compression of the facial nerve at the root exit zone at the brainstem. Rarely, a purely venous compression is seen. However, arachnoid bands strangulating the facial nerve have not been recognized as a cause of hemifacial spasm.
OBSERVATIONS
The authors present a case of a 24-year-old female who had experienced HFS for 9 years. Endoscopic inspection of the root exit zone revealed no vascular compression but an arachnoid band strangulatin… Show more
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