Pulmonary TB

Hi!

I'm very curios about my health. I was an athletic student(swimmer & other sports) in my college days, but after i graduated, take a review and pass the board exam, and got a medical exam for a job: I was shocked by the result of my chest x-ray. pulmonary tb at right apical lung. our family has no backround of this kind of disease.

My question is:

1. Where does i get this disease?

2. what are the possible causes of this kind of illness?

3. they said, if you will be medicated. there will be a sacr in you lungs, is ther a chance that this scar will vanished?

thanks.