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An 80 year old man with chronic obstructive pulmonary disease (COPD) presented to the emergency department with respiratory distress and poor oxygen saturation. Physical exam revealed an obese male in respiratory distress with poor air entry bilaterally and scattered wheezing. His chest, neck, tongue, and lips were swollen. The patient was intubated for respiratory failure, felt to be due to angioedema. His oxygen saturation immediately improved, however the patient developed progressive swelling throughout his body including his eyelids, fingers and toes. Diffuse crepitus was felt on palpation. Chest radiography and computed tomography (CT) of the chest revealed large bilateral pneumothoraces, pneumomediastinum, and subcutaneous emphysema (Figure 1). Bilateral chest tubes were inserted with re-expansion of both lungs. Over the next several days his respiratory parameters improved, with full re-expansion of the lungs and reabsorption of the pneumomediastinum and subcutaneous emphysema. The patient was extubated successfully and was discharged in good health.

Medical image of the week: bilateral pneumothorax, pneumomediastinum, and massive subcutaneous emphysema