question: hello sir in 2003 iwas diagnose of ptb.my sputum was negative and my chest x-ray was read as fibrous densities found on my upper left lung.after 6 monts of treatment my chest x-ray was clear.after a year i got a chest x-ray was the same when i was diagnosed of pyb but my body isnt suffering from any signs of sickness.up to this time the chest x-ray was the same.one doctor at a laboratory said to me that maybe it was a scar.can it be cured?what can i do?