Outlined as two or even more vascular malformations located in one particular lesion. Abnormalities while in the origin/system/range of main blood vessels which have anatomical names Syndromes where vascular malformations are complicated by symptoms other than vascular anomalies The risk of perioperative morbidity and mortality boosts with rising Spetzler-Martin quality. https://www.sgvascularctr.com/service/vascular-malformations/