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I reviewed the literature and encountered a multitude of causes that can produce subcutaneous emphysema. They include rib fractures, pneumothorax, endotracheal intubation, cardiopulmonary resuscitation, ventilator malfunction, blunt trauma to the cervical portion of the trachea, inhaled foreign body in the laryngeal inlet, colonoscopy, arthroscopy, extradural analgesia, self-abuse, dental procedures, mandibular fractures, restorative procedures on the face, and perinephric abscess. However, I did not find any case similar to the one described herein.
KHOUZAM N. Subcutaneous Emphysema and Cocaine: A Rare Case. Arch Surg. 1987;122(5):619. doi:10.1001/archsurg.1987.01400170125020
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