I've been feeling a bit off lately. My chest feels heavy, so I got an x-ray done. They said everything looked normal except there's something called "hilar prominence" on the right side. I'm a smokercould that be the reason? Is this something I should be worried about? Also, I've noticed it hurts a bit when I shout or laugh. Could that be related?

Hilar prominence refers to the enlargement of the lymph nodes or blood vessels near the center of the chest, called the hilum. It's often seen in smokers, but its not necessarily serious. Since your chest X-ray came back normal otherwise, its likely not a major concern. However, if you're experiencing pain when laughing or shouting, its a good idea to follow up with a doctor for further evaluation.