Prospective evaluation of early treatment outcome in patients with meningiomas treated with particle therapy based on target volume definition with MRI and 68Ga-DOTATOC-PET
Purpose. To evaluate early treatment results and toxicity in patients with meningiomas treated with particle therapy. Material and methods. Seventy patients with meningiomas were treated with protons (n = 38) or carbon ion radiotherapy (n = 26). Median age was 49 years. Median age at treatment was 5...
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| Main Authors: | , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
12 Feb 2013
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| In: |
Acta oncologica
Year: 2013, Volume: 52, Issue: 3, Pages: 514-520 |
| ISSN: | 1651-226X |
| DOI: | 10.3109/0284186X.2013.762996 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.3109/0284186X.2013.762996
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| Author Notes: | Stephanie E. Combs, Thomas Welzel, Daniel Habermehl, Stefan Rieken, Jan-Oliver Dittmar, Kerstin Kessel, Oliver Jäkel, Uwe Haberkorn and Jürgen Debus |
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| 520 | |a Purpose. To evaluate early treatment results and toxicity in patients with meningiomas treated with particle therapy. Material and methods. Seventy patients with meningiomas were treated with protons (n = 38) or carbon ion radiotherapy (n = 26). Median age was 49 years. Median age at treatment was 55 years, 24 were male (34%), and 46 were female (66%). Histology was benign meningioma in 26 patients (37%), atypical in 23 patients (33%) and anaplastic in four patients (6%). In 17 patients (24%) with skull base meningiomas diagnosis was based on the typical appearance of a meningioma. For benign meningiomas, total doses of 52.2-57.6 GyE were applied with protons. For high-grade lesions, the boost volume was 18 GyE carbon ions, with a median dose of 50 GyE applied as highly conformal radiation therapy. Nineteen patients were treated as re-irradiation. Treatment planning with MRI and 68-Ga-DOTATOC-PET was evaluated. Results. Very low rates of side effects developed, including headaches, nausea and dizziness. No severe treatment-related toxicity was observed. Local control for benign meningiomas was 100%. Five of 27 patients (19%) developed tumor recurrence during follow-up. Of these, four patients had been treated as re-irradiation for recurrent high-risk meningiomas. Actuarial local control after re-irradiation of high-risk meningiomas was therefore 67% at six and 12 months. In patients treated with primary radiotherapy, only one of 13 patients (8%) developed tumor recurrence 17 months after radiation therapy (photon and carbon ion boost). Conclusion. Continuous prospective follow-up and development of novel study concepts are required to fully exploit the long-term clinical data after particle therapy for meningiomas. To date, it may be concluded that when proton therapy is available, meningioma patients can be offered a treatment at least comparable to high-end photon therapy. | ||
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