Tension pyopneumothorax.

Tension pyopneumothorax is a rare complication of pneumonia and subpleural abscess eroding into the pleural space. We present a case of tension pyopneumothorax in a drug addict. Successful treatment consisted of pleural drainage and parenteral antibiotics. The presence of an air-fluid level accompanying tension pneumothorax on chest radiograph should alert the physician to the possibility of this emergency condition.