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Outcomes of surgery for resection of regions of symptomatic radiation injury after stereotactic radiosurgery for arteriovenous malformations
Outcomes of surgery for resection of regions of symptomatic radiation injury after stereotactic radiosurgery for arteriovenous malformations NEUROSURGERY Massengale, J. L., Levy, R. P., Marcellus, M., Moes, G., Marks, M. P., Steinberg, G. K. 2006; 59 (3): 553-559Abstract
Although radiation injury after stereotactic radiosurgery (SRS), including radiation necrosis (RN), is often treated with surgical resection, detailed outcome data are lacking after resection of symptomatic radiation-injured regions with imaging characteristics suspicious for RN after SRS for arteriovenous malformations (AVM). We present outcomes in seven such patients.We conducted a retrospective chart review of seven patients with AVMs of Spetzler-Martin Grades II (n = 1), III (n = 2), and IV (n = 4) who underwent helium ion, proton beam, or gamma knife SRS and required resection of RN-suspicious tissue 1 to 24 months after post-SRS symptom onset. Postoperative outcomes included Karnofsky Performance Scale (KPS) score and time to symptomatic improvement.Symptomatic improvement required at least 9 months in the three patients with large regions suspicious for RN (>or=4 cm), whereas of four patients with smaller regions (<4 cm), three showed improvement within 2 months (P < 0.05). The remaining patient, who showed no benefit, underwent resection 2 years after the onset of RN symptoms (compared with
View details for DOI 10.1227/01.NEU.0000227476.95859.F1
View details for PubMedID 16955037