Emergency head & neck imaging: infections and inflammatory processes.

Neck infections are fairly common in the emergency setting, affecting a broad spectrum of the patient population. Care should be taken not only to distinguish these conditions from other noninfectious origin such as malignancy but also to guide acute clinical management. A familiarity with neck anatomy, the imaging modalities used for investigation of such conditions, as well as common findings on imaging are critical to the care of affected patients. Cross-sectional imaging is a mainstay in this setting. This article presents the most common neck infections, and details some of their most prominent findings on cross-sectional imaging.