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KMID : 0942820090080020126
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Journal of Korean Brain Tumor Society
2009 Volume.8 No. 2 p.126 ~ p.130
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Change of Hydrocephalus after Gamma Knife Radiosurgery in Patients with Vestibular Schwannoma：A Comparison with Microsurgery
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Park Ki-Soo
Hwang Sung-Kyoo
Park Seong-Hyun
Park Jae-Chan
Hwang Jeong-Hyun
Park Yeun-Mook
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Abstract
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Introduction Hydrocephalus is a common finding associated with vestibular schwannomas(VSs). It can be developed as a complication after gamma knife radiosurgery(GKRS) or microsurgery. Authors reviewed the incidence and management of hydrocephalus in patients with VSs treated by GKRS and compared to patients treated by microsurgery.
Materials and Methods: Thirty patients treated with GKRS(group I) were included in this study. Twenty-seven patients were followed for more than six months. Twenty three patients with microsurgery(group II) as the primary treatment were analyzed and compared to patients treated by GKRS . Nineteen of these patients were followed for more than six months.
Results: Among group I, four had hydrocephalus before the GKRS. Hydrocephalus developed or worsened in 10 patients, including two with preoperative the hydrocephalus before the GKRS. Two patients with hydrocephalus prior to GKRS improved after the GKRS. Three patients received CSF shunting procedures. Among group II, seven had hydrocephalus preoperatively；all of these cases with hydrocephalus improved after surgery regardless of the tumor size.
Conclusion: Development or worsening of the hydrocephalus is a major complication of GKRS, especially in patients with large tumors. Therefore, patients should be carefully followed for the development of the hydrocephalus after GKRS.
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KEYWORD
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Vestibular schwannoma, Gamma knife radiosurgery, Hydrocephalus, Microsurgery
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