Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest provided . AP upright and lateral views the chest provided demonstrate coarsened interstitial markings which could reflect chronic lung disease . No convincing signs of pneumonia . No large effusion or pneumothorax . Lateral view is suboptimal due to underpenetrated technique . Cardiomediastinal silhouette appears within normal limits . No acute bony abnormalities .
    OUTPUT:
    
Coarsened interstitial markings suggestive of chronic lung disease . Under penetrated lateral view limits assessment .