Vestibular schwannomas arise from Schwann cells, either from the vestibular or the cochlear nerve. They account for approximately 80% of cerebellopontine angle tumors, and their incidence is 0.7–1 per 100,000 population. They can remain asymptomatic for a long period of time, especially when they are small in size. The most common symptom is unilateral hearing loss, followed by unilateral tinnitus, imbalance, vertigo, headaches, facial weakness or numbness, swallowing difficulties, hoarseness of voice, palatal paresis, and hydrocephalus in large tumors. Most vestibular schwannomas have an intracanalicular component and can cause widening of the internal auditory meatus. Bilateral vestibular schwannomas can be related to neurofibromatosis type 2, a genetic condition characterized by the development of benign central nervous system tumors. Vestibular schwannomas can be managed by observation, surgical excision, and stereotactic radiotherapy.

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Vestibular Schwannoma

  • Konstantinos Geronatsios

摘要

Vestibular schwannomas arise from Schwann cells, either from the vestibular or the cochlear nerve. They account for approximately 80% of cerebellopontine angle tumors, and their incidence is 0.7–1 per 100,000 population. They can remain asymptomatic for a long period of time, especially when they are small in size. The most common symptom is unilateral hearing loss, followed by unilateral tinnitus, imbalance, vertigo, headaches, facial weakness or numbness, swallowing difficulties, hoarseness of voice, palatal paresis, and hydrocephalus in large tumors. Most vestibular schwannomas have an intracanalicular component and can cause widening of the internal auditory meatus. Bilateral vestibular schwannomas can be related to neurofibromatosis type 2, a genetic condition characterized by the development of benign central nervous system tumors. Vestibular schwannomas can be managed by observation, surgical excision, and stereotactic radiotherapy.