What would be the causes of a collapsed lung?
UK came the closest to it. A collapsed lung has many causes. Some are traumatic like UK said, knife, gunshot etc. Any time you put a hole in the chest wall and let air into the pleural space you have a pmeumothorax and a collapsed lung,. There are other causes like pneumonia that has eaten it’s way to the lining of the lungs causing an infection called empyema. That’s pleurisy with an infection. The pus and debris from the infection builds up and compresses the lung. Pleurisy by itself doesn’t cause a collapsed lung. That’s “empyema” not emphysema. Just to make that clear. Some people get them mixed up. But they are two totally different things. Another cause is like if you were to lie in the same position for days at a time you would get what’s called atelctasis. The lung would collapse from not being ventilated. This is called hypostatic pneumonia. If a large animal lies down for too long, like a horse, they will get hypostatic pneumonia and the consequent collapsed lung. One other t
