Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . There are increased interstitial markings seen in the lungs bilaterally predominantly in a peripheral distribution . On the lateral view , is more dense opacity overlying the spine inferiorly . Superiorly the lungs are clear of confluent consolidation . The cardiac silhouette is mildly enlarged . Median sternotomy wires and mediastinal clips are identified .
    OUTPUT:
    
Increased interstitial markings throughout the lungs with somewhat of a peripheral distribution . While this could be due to edema , there is possibility of underlying chronic interstitial process . More dense opacity projecting over the spine on the lateral view could represent infection or effusion .