Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . The lungs are clear of focal consolidation or pleural effusion . There are however increased interstitial markings throughout the lungs and enlarged cardiac silhouette which is unchanged from prior . There is no acute osseous abnormality detected .
    OUTPUT:
    
Findings suggestive of interstitial edema . No superimposed acute consolidation or effusion . Unchanged cardiomegaly .