Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Increased interstitial markings in the lungs , similar compared to remote exam from ___ and likely due to chronic underlying interstitial process . There is no focal consolidation , effusion , or pneumothorax . Cardiomediastinal silhouette is within normal limits . Old healed left lateral rib fractures are again noted .
    OUTPUT:
    
Chronic interstitial abnormality without superimposed acute cardiopulmonary process . Known pulmonary nodules seen on prior chest CT are not identified by chest x-ray .