Hi AAAA
Thanks for posting your query.
What is your occupation? Is there any history of exposure of dust, environmental and occupational pollutants such as asbestosis, silicosis, Coal?
Do you any past history of infection in affected lung part?
Are you a smoker?
Do you have history of hemoptysis/ respiratory discomfort/ chest pain?
Lung fibrotic changes may be due to autoimmune disease, viral illness and in some cases, as such there is no obvious cause of lung fibrosis and it is called as "Idiopathic Pulmonary fibrosis".
Smoking increases the tendency of developing pulmonary fibrosis.
Few other disease which may also manifest as pulmonary fibrosis are sarcoidosis, rheumatoid arthritis, SLE, scleroderma, wegener's granulomatosis.
It may be post PE sequel as block in blood supply of any part may cause permanent damage with development of fibrosis.
Pulmonary thickening may be due to asbestosis, past pleural illness, interstitial lung disease
You should consult with physician/ respiratory physician and should go for following investigations: complete blood count, ESR, CRP and CT/ MRI scan lung.
If necessary then you should go for lung biopsy.
Put your queries if any.
Best regards,
Dr. Mayank Bhargava

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Hi,
So there is chances of post viral sequel, post PE status, idiopathic pulmonary fibrosis.
You should go for above prescribed investigations and if necessary then go for lung biopsy.
Sincerely,
Dr. Mayank Bhargava

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