» Articles » PMID: 23091666

Radiation-induced Intratumoral Necrosis and Peritumoral Edema After Gamma Knife Radiosurgery for Intracranial Meningiomas

Overview
Date 2012 Oct 24
PMID 23091666
Citations 14
Authors
Affiliations
Soon will be listed here.
Abstract

Objective: To study the clinical significance and relevant factors of radiation-induced intratumoral necrosis (RIN) and peritumoral edema (PTE) after Gamma knife radiosurgery (GKRS) for intracranial meningiomas.

Methods: We retrospectively analyzed the data of 64 patients who underwent GKRS for intracranial meningioma. The mean lesion volume was 4.9 cc (range, 0.3-20), and the mean prescription dose of 13.4 Gy (range, 11-18) was delivered to the mean 49.9% (range, 45-50) isodose line. RIN was defined as newly developed or enlarged intratumoral necrosis after GKRS.

Results: RIN and new development or aggravation of PTE were observed in 21 (32.8%) and 18 (28.1%) cases of meningioma, respectively during the median follow-up duration of 19.9±1.0 months. Among various factors, maximum dose (>25 Gy) and target volume (>4.5 cc) were significantly related to RIN, and RIN and maximum dose (>24 Gy) were significantly related to the development or aggravation of PTE. In 21 meningiomas with development of RIN after GKRS, there was no significant change of the tumor volume itself between the times of GKRS and RIN. However, the PTE volume increased significantly compared to that at the time of GKRS (p=0.013). The median interval to RIN after GKRS was 6.5±0.4 months and the median interval to new or aggravated PTE was 7.0±0.7 months.

Conclusion: A close observation is required for meningiomas treated with a maximum dose >24 Gy and showing RIN after GKRS, since following or accompanying PTE may deteriorate neurological conditions especially when the location involves adjacent critical structures.

Citing Articles

The Efficacy and Tolerability of Radiosurgery in Treating Benign Meningiomas: A Dose Comparison Study from a Single-Center Analysis.

Cho H, Lee J, Park S, Park J, Jung N Life (Basel). 2024; 14(6).

PMID: 38929650 PMC: 11204394. DOI: 10.3390/life14060664.


Post-operative gamma knife radiosurgery for WHO grade I intracranial meningiomas: A single-center, retrospective study.

Yu J, Zeng J, Hu G, Wang J, Chen G, Huang M Front Neurol. 2023; 14:1094032.

PMID: 36860575 PMC: 9968875. DOI: 10.3389/fneur.2023.1094032.


Pseudoprogression and peritumoral edema due to intratumoral necrosis after Gamma knife radiosurgery for meningioma.

Jung I, Chang K, Park S, Jung H, Chang J, Chang J Sci Rep. 2022; 12(1):13663.

PMID: 35953695 PMC: 9372131. DOI: 10.1038/s41598-022-17813-9.


Primary versus postoperative gamma knife radiosurgery for intracranial benign meningiomas: a matched cohort retrospective study.

Fu J, Zeng J, Huang M, Liang S, He Y, Xie L BMC Cancer. 2022; 22(1):206.

PMID: 35209858 PMC: 8876815. DOI: 10.1186/s12885-022-09321-w.


Meningioma Treated With Hypofractionated Stereotactic Radiotherapy Using CyberKnife®: First in the United Arab Emirates.

Shanbhag N, Antypas C, Msaddi A, Murphy S, Singh T Cureus. 2022; 14(2):e21821.

PMID: 35145829 PMC: 8807952. DOI: 10.7759/cureus.21821.


References
1.
Chung H, Kim D, Paek S, Jung H . Development of dose-volume relation model for gamma knife surgery of non-skull base intracranial meningiomas. Int J Radiat Oncol Biol Phys. 2008; 74(4):1027-32. DOI: 10.1016/j.ijrobp.2008.09.007. View

2.
Sanna M, Bacciu A, Falcioni M, Taibah A, Piazza P . Surgical management of jugular foramen meningiomas: a series of 13 cases and review of the literature. Laryngoscope. 2007; 117(10):1710-9. DOI: 10.1097/MLG.0b013e3180cc20a3. View

3.
Henson J, Ulmer S, Harris G . Brain tumor imaging in clinical trials. AJNR Am J Neuroradiol. 2008; 29(3):419-24. PMC: 8118884. DOI: 10.3174/ajnr.A0963. View

4.
Hsieh C, Tsai J, Chang L, Lin J, Chang S, Ju D . Peritumoral edema after stereotactic radiosurgery for meningioma. J Clin Neurosci. 2010; 17(4):529-31. DOI: 10.1016/j.jocn.2009.06.035. View

5.
El Shehaby A, Ganz J, Reda W, Hafez A . Mechanisms of edema after gamma knife surgery for meningiomas. Report of two cases. J Neurosurg. 2005; 102 Suppl:1-3. DOI: 10.3171/jns.2005.102.s_supplement.0001. View