FACTSTriad: port-wine facial birthmark, leptomeningeal angioma, and glaucoma Inheritance: none (somatic mutation after fertilization)neurocutaneous d/o affecting development of blood vesselsHPIstroke sx (prone to ischemic events 2/2 poor blood flow via affected intracranial blood vessels)PHYSICAL EXAMport-wine stainIMAGINGabnormal intracranial pial vessels w/ cerebral Ca2+ (“tram-track sign”)A/P