Hi. I recently had my chest xray as part of my medical examination for employment purposes. It was my first time to undergo such diagnostics. Two days after, the clinic called and told me to have a repeat chest xray because according to them, my lungs did not expand well as expected. So the next day I went back to the clinic and had another chest xray. The following day, I was declared UNFIT to work by the said clinic because the result was LINEAR DENSITY RIGHT MIDDLE LUNG . My question is, what does that mean? What is it s clinical significance? Is it a disease or something contagious? Is it linked to PTB? I haven t had any cough, fever, night sweats or bloody sputum. But I m really scared. I would really appreciate your help. Thank you.