Hydropneumothorax
| Hydropneumothorax | |
|---|---|
| A hydropneumothorax with a white arrow pointing to the lung's pleura | |
| Specialty | Emergency medicine | 
Hydropneumothorax is defined as the presence of both air and fluid within the pleural space. An upright chest x-ray will show air fluid levels. The horizontal fluid level is usually well defined and extends across the whole length of one of the hemithorax.