Nodular opacities can be due to infection,inflammation, malignancy..depending on the location like peribronchovascular or centrilobular or random...can get a clue...
Reticulations also be due to causes like interstitial lung diseases
With a proper history and CT films ,conclusion can be obtained towards diagnosis.
Next Steps
obtain CT films and give detailed history like prior complaints, prior x ray or CT films, and any history of recent infections