Ewaiss, I., Hendam, H., Elhoufi, A. (2019). Gamma Knife Radiosurgery for Post-Operative Vestibulocochlear Schwannomas. The Egyptian Journal of Hospital Medicine, 75(2), 2210-2217. doi: 10.21608/ejhm.2019.30287
Ibrahem G. Ewaiss; Hedaya M. Hendam; Ahmed E. Elhoufi. "Gamma Knife Radiosurgery for Post-Operative Vestibulocochlear Schwannomas". The Egyptian Journal of Hospital Medicine, 75, 2, 2019, 2210-2217. doi: 10.21608/ejhm.2019.30287
Ewaiss, I., Hendam, H., Elhoufi, A. (2019). 'Gamma Knife Radiosurgery for Post-Operative Vestibulocochlear Schwannomas', The Egyptian Journal of Hospital Medicine, 75(2), pp. 2210-2217. doi: 10.21608/ejhm.2019.30287
Ewaiss, I., Hendam, H., Elhoufi, A. Gamma Knife Radiosurgery for Post-Operative Vestibulocochlear Schwannomas. The Egyptian Journal of Hospital Medicine, 2019; 75(2): 2210-2217. doi: 10.21608/ejhm.2019.30287
Gamma Knife Radiosurgery for Post-Operative Vestibulocochlear Schwannomas
Department of Neurosurgery, Al-Azhar University, New Damietta, Egypt
Abstract
Background: The discovery of Schwann cells as the oncologic cells led to the recommendation by a consensus meeting in 1992 to use the term vestibular schwannoma. In the literature, the terms acoustic neurinoma, acoustic neuroma, and vestibular schwannoma are used interchangeably. Objective: Evaluation of the outcome of the management of post-operative recurrent or residual vestibular schwannomas by using gamma knife radiosurgery (GKRS). Patients and Methods: In this retrospective descriptive case series study during the year of 2018 on twenty (20) consecutive cases at the International Medical Center (IMC) with residual or recurrent post-operative vestibulocochlear schwannomas (VS) whom underwent gamma knife stereotactic radiosurgery (SRS). Clinical & radiological follow up done for a period of 6 months minimum up to 3 years. Results: After GKRS, it was shown that the cerebellar ataxia improved in 7 cases (100%). 5th cranial nerve affection improved in 6 cases (100%). 7th cranial nerve affection improved in 5 cases (100%). Hearing affection deterioration occurred in 4 cases (20%), 16 cases had stationary course (80%), Local tumor control in 90% of patients & Regrowth of tumor in 10% of patients. Conclusion: GKRS is the best choice in small size VSs less than 3 cm in maximum diameter X, Y, Z either prior surgery was done or not due to its advantageous preservation of all cranial nerves as they can withstand the prescribed SRS dose for VSs.
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