OBJECTIVES/HYPOTHESIS: A relation between conventional radiotherapy and the development of intracranial neoplasma is well known, but radiation-associated tumor following stereotactic radiotherapy of vestibular schwannoma is underestimated. In this article we will study this relation by doing a complete literature review on all the malignant intracranial tumors that appeared following radiosurgery and adding a case of malignant vestibular schwannoma following stereotactic radiotherapy in a Neurofibromatosis type 2 patient. METHODS: Literature review and discussion. RESULTS: We found 26 cases of malignant brain tumor following stereotactic radiotherapy including our case. In 13 cases the tumor occurred in context of Neurofibromatosis type 2. None of the patients had a tumor size less than 2.5 cm. and the mean latency period between the radiotherapy and malignant tumor development was 5.8 years. CONCLUSION: Patients with vestibular schwannoma should be made aware of the low incidence of the radiation-induced malignant changes and long-term follow-up is mandatory.
OBJECTIVES/HYPOTHESIS: A relation between conventional radiotherapy and the development of intracranial neoplasma is well known, but radiation-associated tumor following stereotactic radiotherapy of vestibular schwannoma is underestimated. In this article we will study this relation by doing a complete literature review on all the malignant intracranial tumors that appeared following radiosurgery and adding a case of malignant vestibular schwannoma following stereotactic radiotherapy in a Neurofibromatosis type 2patient. METHODS: Literature review and discussion. RESULTS: We found 26 cases of malignant brain tumor following stereotactic radiotherapy including our case. In 13 cases the tumor occurred in context of Neurofibromatosis type 2. None of the patients had a tumor size less than 2.5 cm. and the mean latency period between the radiotherapy and malignant tumor development was 5.8 years. CONCLUSION:Patients with vestibular schwannoma should be made aware of the low incidence of the radiation-induced malignant changes and long-term follow-up is mandatory.
Authors: Yoichi Nonaka; Takanori Fukushima; Kentaro Watanabe; Allan H Friedman; Calhoun D Cunningham; Ali R Zomorodi Journal: Neurosurg Rev Date: 2016-01-19 Impact factor: 3.042
Authors: Alexander D Sherry; Brian Bingham; Ellen Kim; Meredith Monsour; Guozhen Luo; Albert Attia; Lola B Chambless; Anthony J Cmelak Journal: J Radiosurg SBRT Date: 2020