Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Slight increase in interstitial markings bilaterally , right greater than left , could be due to minimal interstitial edema versus chronic lung disease , less likely atypical pneumonia . No lobar consolidation seen . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are stable . Hilar contours are stable . Likely left hilar calcified nodes again noted .
    OUTPUT:
    
Slight increase in interstitial markings bilaterally since ___ , right greater than left , could be due to minimal interstitial edema versus chronic lung disease , less likely atypical pneumonia .