Abstract
Life-threatening infections of the head and neck most commonly originate from suppurative complications of dental, oropharyngeal, or otorhinolaryngeal infections. From these sites, infections may extend along natural fascial planes into deep cervical spaces or vascular compartments (figure 1). It is notable that these fascial planes both separate and connect distant areas, thereby both limiting and directing the spread of infection. These infections may be fatal by causing local airway occlusion or by directly extending to vital structures such as the mediastinum or carotid sheath. Otorhino-
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