J Neurocrit Care.  2020 Dec;13(2):128-132. 10.18700/jnc.200014.

Normal pressure hydrocephalus after gamma knife radiosurgery in a patient with vestibular schwannoma

• Park Y
• Yoo BG
• Jeong S
• Lee WG
• Kim MK
• Huh SY
• Lee JH

• KMID: 2509945
• DOI: http://doi.org/10.18700/jnc.200014

Abstract

Background
Vestibular schwannoma is a benign, usually slow-growing tumor, which develops from Schwann cells of the eighth cranial nerve.
Case Report
The treatment options for the schwannoma are surgical removal or gamma knife radiosurgery. The treatment of choice depends on the size of the tumor and the level of hearing in the affected ear. After gamma knife radiosurgery, there may be some neurological complications including headache, dizziness, motor or cranial nerve deficits, seizure, carotid artery stenosis, and increased intracranial pressure. Hydrocephalus is a rare complication of gamma knife radiosurgery for vestibular schwannoma.
Conclusion
Here, we report a case of normal pressure hydrocephalus after gamma knife radiosurgery in a patient with vestibular schwannoma.

Keyword

Vestibular schwannoma; Radiosurgery; Gait disturbance

Figure

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  Fig. 1. (A) T1-enhanced images show a mass in the left cerebellopontine angle. (B) Fluid-attenuated inversion recovery images reveal a normal-sized ventricle. (C) T1 midsagittal view does not show any evidence of non-communicating hydrocephalus.

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  Fig. 2. Non-contrast computed tomography (CT) images of the patient. (A) Three months after gamma knife surgery, follow-up CT scans revealed enlarged ventricles. (B) After ventriculoperitoneal shunt insertion, the size of the ventricles normalized.

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