Hi thanks for asking question.
If you have no symptoms at all then it has of less value.
But here are few possibilities.
1.First interstitial
pulmonary edema can lead to such prominent marking.
Patient will also complain pink frothy sputum and dyspnea.
2.Second if you are working in textile industry or asbestos using industry then chances of
pneumoconiosis is present like silicosis, asbestosis etc.can lead to dyspnea with such x ray finding.
3.If you have dyspnea, cough , fever , chest pain then
interstitial pneumonia like atypical viral or
mycoplasma pneumonia can be the cause.
4.If you have increasing breathlessness and no specific cause found for that
idiopathic pulmonary fibrosis has to be ruled out.
To distinguish between restrictive and obstructive disease pulmonary function test is useful.
Complete blood examination also helpful.
I hope my suggestion will help you.