Greetings, My Wife Went To A Medical Laboratory For Chest

Greetings,
My wife went to a medical laboratory for chest pa x-ray, for her work work requirements. the x-ray result was ,
"Few faint upper lung fibrosis noted
Rest of the lungs are clear.
Heart, costophrenic sulci and other osseous structures are intact.
Mild thoracic scolliosis noted"
So she went to the medical laboratory doctor for consultation.
She been diagnose for PTB 3, maintenance phase of treatment.
My question is, why is the x-ray result differ from doctors diagnosis?
My wife is 47 years old, her weight is 50 kg.

Regards
Daniel