Arteriovenous Malformations (AVMs) Knowledge Base

Arteriovenous Malformations (AVMs) are simply characterized by abnormal connections between arteries and veins, where the arterial blood is shunted to veins. Although arteriovenous malformations are present in neonates at birth, they often suddenly become obvious when the patient is older because of various stimuli such as trauma, pregnancy, or puberty. Progression may also occur following biopsy or surgical intervention (e.g., ligation, partial surgical excision)