@@ As many as 50% of vascular lesions are seen in the head and neck region.1 Hemangiomas are the most common tumors in infants, whereas arteriovenous malformations (AVMs) are the least common, comprising about 1.5% of the total reported cases.2 Hemangiomas and vascular malformations are different both clinically and biologically. Hemangiomas are benign tumors in infants characterized by abnormal proliferation of endothelial cells and blood vessels, whereas AVMs are abnormal communications between ectatic arteries and veins without an intervening capillary bed, often located at the temporal region or subscapular tissues. Because of the rich arterial blood supply to the auricle, it is easier to form abnormal aneriovenous anastomosis among abnormal arteriovenous lumens at this anatomic site. Simultaneously coexisting hemangiomas and AVMs have rarely been reported and are still controversial. We report an unusual case of hemangiomas of the face complicated by ear AVM in a neonate and discuss the pathogenesis and treatment modalities based on a literature review.
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