Stereotactic radiosurgery for treatment of radiation-induced meningiomas: A multiinstitutional study

Adomas Bunevicius, Mohand Suleiman, Samir Patel, Roberto Martínez Álvarez, Nuria E.Martinez Moreno, Roman Liscak, Jaromir Hanuska, Anne Marie Langlois, David Mathieu, Christine Mau, Catherine Caldwell, Leonard C. Tuanquin, Brad E. Zacharia, James McInerney, Cheng Chia Lee, Huai Che Yang, Jennifer L. Peterson, Daniel M. Trifiletti, Akiyoshi Ogino, Hideyuki KanoRonald E. Warnick, Anissa Saylany, Love Y. Buch, John Y.K. Lee, Ben A. Strickland, Gabriel Zada, Eric L. Chang, L. Dade Lunsford, Jason Sheehan

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


OBJECTIVE Radiation-induced meningiomas (RIMs) are associated with aggressive clinical behavior. Stereotactic radiosurgery (SRS) is sometimes considered for selected RIMs. The authors investigated the effectiveness and safety of SRS for the management of RIMs. METHODS From 12 institutions participating in the International Radiosurgery Research Foundation, the authors pooled patients who had prior cranial irradiation and were subsequently clinically diagnosed with WHO grade I meningiomas that were managed with SRS. RESULTS Fifty-two patients underwent 60 SRS procedures for histologically confirmed or radiologically suspected WHO grade I RIMs. The median ages at initial cranial radiation therapy and SRS for RIM were 5.5 years and 39 years, respectively. The most common reasons for cranial radiation therapy were leukemia (21%) and medulloblastoma (17%). There were 39 multiple RIMs (35%), the mean target volume was 8.61}7.80 cm3, and the median prescription dose was 14 Gy. The median imaging follow-up duration was 48 months (range 4.195 months). RIM progressed in 9 patients (17%) at a median duration of 30 months (range 3.45 months) after SRS. Progression-free survival at 5 years post-SRS was 83%. Treatment volume . 5 cm3 predicted progression (HR 8.226, 95% CI, p = 0.047). Seven patients (14%) developed new neurological symptoms or experienced SRS-related complications or T2 signal change from 1 to 72 months after SRS. CONCLUSIONS SRS is associated with durable local control of RIMs in the majority of patients and has an acceptable safety profile. SRS can be considered for patients and tumors that are deemed suboptimal, poor surgical candidates, and those whose tumor again progresses after removal.

Original languageEnglish (US)
Pages (from-to)862-870
Number of pages9
JournalJournal of neurosurgery
Issue number3
StatePublished - Sep 2021

All Science Journal Classification (ASJC) codes

  • Surgery
  • Clinical Neurology


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