PMC9252848_01
(a) Chest x-ray with pneumomediastinum with subcutaneous air in the chest wall and neck. (b) CT head with subcutaneous emphysema. (c, d) CT Chest with pneumomediastinum and extensive subcutaneous and soft tissue emphysema throughout the chest and back without signs of a pneumothorax. (e, f): CT Abdomen with pneumoperitoneum and extensive soft tissue emphysema dissecting into the pelvis and bilateral lower extremities beyond the inguinal ligament.
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fig1
The extensive subcutaneous emphysema can be visualized in Figure 1.