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Neurofibromatosis type 2-associated meningiomas: an international multicenter study of outcomes after Gamma Knife stereotactic radiosurgery

N. Mohammed, YC. Hung, Z. Xu, T. Chytka, R. Liscak, M. Tripathi, D. Arsanious, CP. Cifarelli, M. Perez Caceres, D. Mathieu, H. Speckter, GU. Mehta, GP. Lekovic, JP. Sheehan

. 2022 ; 136 (1) : 109-114. [pub] 20210618

Jazyk angličtina Země Spojené státy americké

Typ dokumentu časopisecké články, multicentrická studie

Perzistentní odkaz   https://www.medvik.cz/link/bmc22012398

OBJECTIVE: The management of neurofibromatosis type 2 (NF2)-associated meningiomas is challenging. The role of Gamma Knife radiosurgery (GKRS) in the treatment of these tumors remains to be fully defined. In this study, the authors aimed to examine the role of GKRS in the treatment of NF2-associated meningiomas and to evaluate the outcomes and complications after treatment. METHODS: Seven international medical centers contributed data for this retrospective cohort. Tumor progression was defined as a ≥ 20% increase from the baseline value. The clinical features, treatment details, outcomes, and complications were studied. The median follow-up was 8.5 years (range 0.6-25.5 years) from the time of initial GKRS. Shared frailty Cox regression was used for analysis. RESULTS: A total of 204 meningiomas in 39 patients treated with GKRS were analyzed. Cox regression analysis showed that increasing the maximum dose (p = 0.02; HR 12.2, 95% CI 1.287-116.7) and a lower number of meningiomas at presentation (p = 0.03; HR 0.9, 95% CI 0.821-0.990) were predictive of better tumor control in both univariable and multivariable settings. Age at onset, sex, margin dose, location, and presence of neurological deficit were not predictive of tumor progression. The cumulative 10-year progression-free survival was 94.8%. Radiation-induced adverse effects were noted in 4 patients (10%); these were transient and managed medically. No post-GKRS malignant transformation was noted in 287 person-years of follow-up. CONCLUSIONS: GKRS achieved effective tumor control with a low and generally acceptable rate of complications in NF2-associated meningiomas. There did not appear to be an appreciable risk of post-GKRS-induced malignancy in patients with NF2-treated meningiomas.

Citace poskytuje Crossref.org

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$a Mohammed, Nasser $u 1Department of Neurological Surgery, University of Virginia Health System, Charlottesville, Virginia
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$a OBJECTIVE: The management of neurofibromatosis type 2 (NF2)-associated meningiomas is challenging. The role of Gamma Knife radiosurgery (GKRS) in the treatment of these tumors remains to be fully defined. In this study, the authors aimed to examine the role of GKRS in the treatment of NF2-associated meningiomas and to evaluate the outcomes and complications after treatment. METHODS: Seven international medical centers contributed data for this retrospective cohort. Tumor progression was defined as a ≥ 20% increase from the baseline value. The clinical features, treatment details, outcomes, and complications were studied. The median follow-up was 8.5 years (range 0.6-25.5 years) from the time of initial GKRS. Shared frailty Cox regression was used for analysis. RESULTS: A total of 204 meningiomas in 39 patients treated with GKRS were analyzed. Cox regression analysis showed that increasing the maximum dose (p = 0.02; HR 12.2, 95% CI 1.287-116.7) and a lower number of meningiomas at presentation (p = 0.03; HR 0.9, 95% CI 0.821-0.990) were predictive of better tumor control in both univariable and multivariable settings. Age at onset, sex, margin dose, location, and presence of neurological deficit were not predictive of tumor progression. The cumulative 10-year progression-free survival was 94.8%. Radiation-induced adverse effects were noted in 4 patients (10%); these were transient and managed medically. No post-GKRS malignant transformation was noted in 287 person-years of follow-up. CONCLUSIONS: GKRS achieved effective tumor control with a low and generally acceptable rate of complications in NF2-associated meningiomas. There did not appear to be an appreciable risk of post-GKRS-induced malignancy in patients with NF2-treated meningiomas.
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$a Hung, Yi-Chieh $u 1Department of Neurological Surgery, University of Virginia Health System, Charlottesville, Virginia
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$a Xu, Zhiyuan $u 1Department of Neurological Surgery, University of Virginia Health System, Charlottesville, Virginia
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$a Chytka, Tomas $u 2Department of Neurological Surgery, Na Homolce Hospital, Prague, Czech Republic
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$a Liscak, Roman $u 2Department of Neurological Surgery, Na Homolce Hospital, Prague, Czech Republic
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$a Tripathi, Manjul $u 3Department of Neurological Surgery, Postgraduate Institute of Medical Education and Research, Chandigarh, India
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$a Arsanious, David $u 4Department of Neurological Surgery, West Virginia University, Morgantown, West Virginia
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$a Cifarelli, Christopher P $u 4Department of Neurological Surgery, West Virginia University, Morgantown, West Virginia
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$a Perez Caceres, Marco $u 5Department of Neurological Surgery, Université de Sherbrooke, Centre de recherche du CHUS, Sherbrooke, Quebec, Canada
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$a Mathieu, David $u 5Department of Neurological Surgery, Université de Sherbrooke, Centre de recherche du CHUS, Sherbrooke, Quebec, Canada
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$a Speckter, Herwin $u 6Department of Neurological Surgery, CEDIMAT Hospital, Santo Domingo, Dominican Republic; and
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$a Mehta, Gautam U $u 7Department of Neurological Surgery, House Ear Institute, Los Angeles, California
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$a Lekovic, Gregory P $u 7Department of Neurological Surgery, House Ear Institute, Los Angeles, California
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$a Sheehan, Jason P $u 1Department of Neurological Surgery, University of Virginia Health System, Charlottesville, Virginia
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