SOVEREIGN, ISM / SCIENCE PHOTO LIBRARY SOVEREIGN, ISM / SCIENCE PHOTO LIBRARY
Coloured X-ray (front view) of the chest in a 53 year old male patient showing hydropneumothorax of the lung (at centre left). Hydropneumothorax occurs when fluid and air are trapped in the pleural cavity between the lung and chest wall, causing shortness of breath and pain on breathing.
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