I recently got a chest X-ray because I've been feeling low and my chest feels heavy. The report came back normal, but it mentioned 'hilar prominence' on the right side. What does that mean? Could it be related to my smoking? Is it something serious? Also, I feel a little pain when I shout or laugh, is that a concern?

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.