Cervicofacial and mediastinal emphysema due to a dental proc
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The etiologies of subcutaneous emphysema are numerous, and the syndrome results in considerable alarm in both the patient and the clinician. Cervicofacial and mediastinal emphysema as a complication of dental procedures can lead to severe infection of the surrounding tissues (Ludwig's angina, Lemierre's disease mediastinitis, etc.) asphyxiation or air embolism. Anatomically, the neck fascia compartmentalizes the structures within the neck. These layers of tough fascia define routes through which air or infection can spread. The spaces between the deep cervical fascial planes of the head and neck are contiguous with the mediastinal space. Therefore, air or infection can easily spread from the head and neck into the mediastinum. We report on a case of extensive cervicofacial and mediastinal emphysema after a routine dental procedure, initially masquerading as an allergic reaction in an otherwise young and healthy woman...

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