This could be a heart condition in which i suggest you should go see your doctor about this.
its in the middle of your chest, between the lungs
Air in the chest (Thorax) causes the lung to collapse. This can be spontaneous or after chest injuries
Mediastinum
Inflammation of the tissues that cover the lungs and line the chest cavity causes pleuritis, with fluid accumulating in the lungs.
The sternum bone is in the middle of your chest, right above your heart and lungs.
There are no muscles in the lungs that help inhale or exhale, this is the job of the diaphragm.
plueral space
"The thymus gland lies just beneath the upper part of the breastbone in the middle of the chest.
Your respiratory system is mainly your lungs which are located in your chest.
pleuritis
i think that your lungs would be dried out.
your lungs are just inside your ribcage, from the chest in. there is your heart, stomach, spine, some arm muscles, and big arteries and veins between your lungs and your back skin. there is just the ribcage and a couple big blood vessels between the lungs and the chest.