Hi, i m 23 yrs. old, 48kgs. and 5 4 in height. my medical exam today shows that i have PTB left upper lobe, i was really shocked cause i don t have any history of it, actually last dec. 2013 i undergone chest x-ray and the result is clear, no findings. i really want to know all about it, the clinic advised me to consult a pulmonologist because i m unfit to work. how did it happen? why? what should i do? please, i really need your advice, thank you so much