Welcome to HCM,
You have suffered PTB ( Pulmonary TB) 6 years back and it was treated completely with proper therapy.
Once you have TB in upper part of lungs even after treatment residual fibrosis
produces these scar and they will persist always.
You can not remove these scar with any medicines.
Please do not worry as it depends on there policy, hope you will get many more opportunities.
PTB some time TB organisms lie dormant and may get reactivated if individuals immunity declines due to any reason.
Please take care