I had a friend in school with a bronchogenic cyst. He didn’t know he had it until he started having a lot of trouble breathing one day. It sent him into a panic, and he hyperventilated.
The teacher called 911, and they put him on oxygen until they could get to the hospital to do an x-ray. The doctor found that he had a cyst right where his trachea branched off. The cyst was so large that it was compressing the trachea.
He had no other option but surgery. The doctor performed robotic resection, where a computer translated his hand movements to the robot, which removed the cyst.