Cerebellopontine angle tumors causing hemifacial spasm: types, incidence, and mechanism in nine reported cases and literature review

摘要

Objective Although hemifacial spasm is usually caused by vascular compression around the root exit zone of the facial nerve, it is sometimes brought on by a cerebellopontine angle tumor. We reviewed and analyzed data from past experience with hemifacial spasm induced by cerebellopontine angle tumors.