Spectrum of clinical manifestations of CAs. Symptomatic hemorrhage, with a rigorously adjudicated definition, is a singular clinical event with distinct clinical implications regarding future risk and deploying clinical interventions. Figure modified with permission from Al-Shahi Salman R, Berg MJ, Morrison L, Awad IA: Hemorrhage from cavernous malformations of the brain: definition and reporting standards. Angioma Alliance Scientific Advisory Board. Stroke 39:3222–3230, 2008.