<s>[INST] Hello, I have been working for about 1 year and 8 months as a recruitment specialist, last march 2011 we are about to undergo annual medical examination and was found out that in my x-ray theres a densities in my right upper lobe, by then i have to repeat my x-ray the same time for apicolordotic view. the result is the same, for further clarification of my xray result, they asked me if i have a cold or a cough, but then i dont have any of that that time. And to clear my result they have given me 3 days to examine my sputum monitored every morning..but the hardest thing is that Its so hard to get sputum early in the morning because i dont have cold.. What am i going to do, Doc? Thank you and Godbless.. [/INST] Thanks for your question on Chat Doctor. I can understand your concern. Your x-ray reports are mostly due to old, fibrotic densities. You might be having lung infection like (pneumonia or tuberculosis) in the past and now after healing it is showing old densities. Since these are old, healed lesions, you will not show any symptoms like cough, expectoration. So in my opinion, if you want to clear medical examination then get done CT thorax and bronchoscopy. CT scan is more reliable for old densities as compare to chest x-ray. Bronchoscopy is more appropriate to rule out active lung infection. If both of them are normal then no need to worry about active lung infection and so you will get medical clearance easily. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks. </s>