“…Tissue swelling with crepitus on palpation are hallmark signs. This complication has been a documented sequela in a wide variety of surgeries and procedures, including various types of dental procedures, colonoscopy, shoulder arthroscopy, tonsillectomy, throidectomy, laparoscopy, endoscopic retrograde pancreatocholangiogram, cricothyrotomy, electroconvulsive therapy, endotracheal intubation, and positive pressure ventilation (PPV) [3][4][5][6][7][8][9][10][11][12][13]. A recent review of the dental and surgical literature showed cases of SQ emphysema often being linked to the use of air-driven powered devices, CO2 lasers, NO2 cryotherapy, and endotracheal intubation and PPV [2].…”