Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac and mediastinal silhouettes are stable . Hilar contours are grossly stable . There is persistent mild increase in interstitial markings bilaterally which may be due to mild interstitial edema versus chronic lung disease . No pleural effusion or pneumothorax . No new focal consolidation .
    OUTPUT:
    
Stable examination . Stable mild diffuse increase in interstitial markings bilaterally could be due to mild edema and / or chronic interstitial lung disease .