Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Coarse interstitial opacities are noted diffusely within the lungs , most pronounced along the periphery and right mid lung field , compatible with a chronic interstitial lung disease . Patchy opacities in the lung bases likely reflect superimposed atelectasis . No focal consolidation or pneumothorax is seen . No definite pleural effusion is identified . There is no pulmonary edema .
    OUTPUT:
    
Patchy opacities in the lung bases likely reflect atelectasis superimposed on a background of chronic interstitial lung disease . Infection is difficult to exclude however .