Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest . Lower lung volumes seen on the current exam . There is persistently increased interstitial markings throughout the lungs bilaterally , not significantly changed from ___ . There has however been interval development of more confluent opacity in the left lung worrisome for a superimposed infectious process thought to involve the apical segment of the left lower lobe . There is no definite effusion . Cardiac silhouette is enlarged but unchanged . No acute osseous abnormality detected .
    OUTPUT:
    
Persistently increased interstitial markings in the lungs bilaterally potentially due to interstitial edema or chronic underlying lung disease . Superimposed new consolidation in the left lung worrisome for superimposed infectious process . Recommend repeat after treatment .