in my case i was not deported..after almost 3years i had xray again for health certificate renewal. this time they told me they found a scar so i did a re-take in different positions still it was visible the doctor told me it was already there ever since but that time i think it was very obvious..they took me inside and injected me somewhat like TB test..if it turns out red then im positive..indeed it turned out red but just very small..actually they have different measurements i think it's their basis..since mine was just very small and i dont have cough or fever or other illness they advised me to undergo treatment but i have to stop working for the time being..i have to get back to work only after the treatment..