Abstract
Vascular anomalies, both tumors and malformations, can occur anywhere in the body, including the airway. Airway involvement can be seen in the oral cavity, oropharynx, larynx, glottis and subglottis, and trachea as well as having extension into the retropharyngeal and parapharyngeal regions. Vascular malformations of the airway are less common than vascular tumors (Parhizkar et al, Arch Otolaryngol Head Neck Surg 137:352–357, 2011). Slow-flow vascular malformations of the airway include capillary malformations (CMs), venous malformations (VMs), and lymphatic malformations (LMs), while arteriovenous malformations (AVM) are considered fast-flow lesions. Mixed lesions such as lymphovenous malformations (LVMs) of the airway can also be seen.