arteriovenous hemangioma/malformation facial arteriovenous malformation https://rarediseases.info.nih.gov/diseases/12663/facial-arteriovenous-malformation https://www.malacards.org/card/facial_arteriovenous_malformation Facial arteriovenous malformation is a rare vascular anomaly characterized by abnormal communication between arteries and veins, bypassing the capillary bed, located in the facial area. Lesions may be asymptomatic or may manifest with pain, ulceration, pulsation, tinnitus, minor bleeding or potentially life-threatening hemorrhage, blurred vision, impaired hearing, headache, paresthesia, enlargement of facial bones with intraosseous lesions, intraosseous hemangiomas, and speech, breathing and swallowing difficulties, as well as neuropathy. MEDGEN:1842762 icd11.foundation:926860967 GARD:0012663 MONDO:0015500 UMLS:C5680665 Orphanet:156230