Pneumoparotitis is a rare cause of parotid gland swelling. We report a case of self-induced pneumoparotitis that resulted in subcutaneous emphysema and pneumomediastinum after an open biopsy of the parotid gland. We suggest a new method for diagnosing this condition. This is done by insufflation of the cheeks with contrast in the oral cavity. A reflux of air and contrast is subsequently demonstrated by a computed tomography scan of the area.
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