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Published in: Strahlentherapie und Onkologie 12/2015

01-12-2015 | Original Article

Stereotactic LINAC radiosurgery for the treatment of typical intracranial meningiomas

Efficacy and safety after a follow-up of over 12 years

Authors: Mustafa El-Khatib, M.D., Faycal El Majdoub, M.D., PD Stefan Hunsche, Ph.D., Mauritius Hoevels, Martin Kocher, M.D., Prof. Volker Sturm, M.D., PD Mohammad Maarouf, M.D., Assoc. Professor

Published in: Strahlentherapie und Onkologie | Issue 12/2015

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Abstract

Purpose

The efficacy and safety of stereotactic radiosurgery (SRS) for treatment of intracranial meningiomas has been demonstrated in numerous studies with short- and intermediate-term follow-up. In this retrospective single-center study, we present long-term outcomes of SRS performed with a linear accelerator (LINAC) for typical intracranial meningiomas.

Patients and methods

Between August 1990 and December 2007, 148 patients with 168 typical intracranial meningiomas were treated with stereotactic LINAC-SRS, either as primary treatment or after microsurgical resection. A median tumor surface dose of 12 Gy (range 7–20 Gy) and a median maximum dose of 24.1 Gy (range 11.3–58.6 Gy) was applied. The median target volume was 4.7 ml (range 0.2–32.8 ml, SD ± 4.8 ml).

Results

Overall mean radiological follow-up was 12.6 years. Tumor shrinkage was seen in 75 (44.6 %) and stable disease in 85 (50.6 %) cases. Eight of 168 meningiomas (4.8 %) showed local tumor progression. The tumor control rate (TCR) after 5, 10, and 15 years was 93.6 % at each time point, and the progression-free survival (PSF) rates were 92, 89, and 89 %, respectively. The neurological symptoms existing prior to LINAC-SRS improved in 77 patients (59.7 %), remained unchanged in 42 (32.6 %), and deteriorated in 10 (7.8 %) patients.

Conclusion

Our study emphasizes the efficacy of LINAC-SRS for de novo, residual and recurrent typical intracranial meningiomas. A high long-term local TCR with a low morbidity rate could be achieved. LINAC-SRS should thus be considered as a primary treatment option, as one arm of a combined treatment approach for incompletely resected meningiomas, or as a salvage therapy for recurrences.
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Metadata
Title
Stereotactic LINAC radiosurgery for the treatment of typical intracranial meningiomas
Efficacy and safety after a follow-up of over 12 years
Authors
Mustafa El-Khatib, M.D.
Faycal El Majdoub, M.D.
PD Stefan Hunsche, Ph.D.
Mauritius Hoevels
Martin Kocher, M.D.
Prof. Volker Sturm, M.D.
PD Mohammad Maarouf, M.D., Assoc. Professor
Publication date
01-12-2015
Publisher
Springer Berlin Heidelberg
Published in
Strahlentherapie und Onkologie / Issue 12/2015
Print ISSN: 0179-7158
Electronic ISSN: 1439-099X
DOI
https://doi.org/10.1007/s00066-015-0880-9

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