Subcutaneous emphysema secondary to pulmonary cavity in absence of pneumothorax or pneumomediastinum.

Subcutaneous emphysema is a common condition occurring after chest injury. It may also be observed in association with pneumothorax or pneumomediastinum as a result of pathological changes in the respiratory tract. Spontaneous subcutaneous emphysema in absence of pneumothorax or pneumomediastinum is rare. We report a case of spontaneous subcutaneous emphysema in isolation secondary to fibrocavitatory lesion in the chest along with review of the literature.