Massive Cervicothoracic Subcutaneous Emphysema and Pneumomed
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A variety of procedures can cause subcutaneous emphysema and pneumomediastinum, including injury, head and neck surgery, mechanical ventilation, and invasive procedures such as bronchoscopy. A few cases have been observed during dental procedures, principally third molar extraction. Emphysema can also be caused by an increase in mouth air pressure caused by playing a wind instrument or blowing up a balloon. This article describes the case of a 65-year-old woman who developed massive cervicothoracic subcutaneous emphysema and pneumomediastinum during a dental hygiene procedure employing an artificial airflow. She was diagnosed based on clinical manifestations and computed tomography (CT). CT revealed massive subcutaneous emphysema extending from the superior left eyelid to the diaphragm.

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