system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How does your lung recover with a hole left after surgery?

Long story short,I had an operation on my left lung and after it I had a tube stuck in it with a big glass jug to filter out the remaining stuff after the surgery. But when it was removed,only my skin was stiched where the tube was inserted. My lung still had a hole left in it? How does my body deal with this and isn't this very bad?
gpt
Potentially the hole was into the cavity between your lung and your chest wall.  When you have any injury to the lung it can cause air to escape into the cavity which prevents the lung from inflating (pneumothorax).  To fix this the tube is placed inbetween the lung and the chest wall to remove this air.  Perhaps your 'stuff' was in this cavity, not in the lung itself.  Like the rest of the body, a small cut or injury on the lung itself will self heal but a larger or re-occurring injury would most likely require surgery.