question: my question is I took a chest x ray before a month, the result shows some kind of white things on the bottom of my right lung, the doctor send me to test TB.  I don't have any kind of symptom TB like cough, night sweat and any other smymptom.  Still I am waiting the result it will take 9 weeks to know the result.  would you please advise or tell me the possiblity of being TB positive without any symptom of TB?