Arteriovenous Malformation of Central Nervous System

AVMs have been reported to rupture at a formidable annual rate of 2% to 3% at natural progression, often resulting in longterm neurological deficits and poor functional outcomes.The reported risk of hemorrhagic presentation in patients with AVMs is 41% to 65%. While many studies suggest a correlation between higher hemorrhage risk and the concurrent presence of AVM and aneurysms, few authors have focused specifically on flow-related aneurysms alone. In many instances, the source of rupture is also unclear. Meta-analysis from 2016 suggested that 49.2% of hemorrhages were secondary to aneurysm rupture, 45% from AVM rupture, and 5.7% were undetermined.In a study of 302 patients, of which 52.6% had a hemorrhagic presentation, demonstrated a significant increase in rate of hemorrhage in those with flow-related aneurysms. Thus, it is necessary to figure out risk factors related to ruptured flow-related aneurysms in pAVM.

The RSSearch® Registry is an international multi-year database designed to track SRS/SBRT (Stereotactic Radiosurgery/Stereotactic Body Radiation Therapy) utilization, treatment practices and outcomes to help determine, over time, the most effective use of these systems in management of patients with life threatening tumors and other diseases. (This study was formally called ReCKord and included the CyberKnife only; The ReCKord study continues as a CyberKnife subset of RSSearch.)