Described as two or even more vascular malformations found in a single lesion. Abnormalities during the origin/study course/range of important blood vessels that have anatomical names Syndromes where vascular malformations are intricate by indicators aside from vascular anomalies The chance of perioperative morbidity and mortality improves with expanding Spetzler-Martin quality. https://www.sgvascularctr.com/service/vascular-malformations/