Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are normal . Pulmonary vascularity is not engorged . Ill - defined opacities are demonstrated within the right upper lobe , right lung base , and to a lesser extent the left lung base , similar in distribution when compared to the prior CT from ___ . No new areas of focal consolidation are demonstrated . There is no pleural effusion or pneumothorax . No acute osseous abnormalities are seen .
    OUTPUT:
    
Multiple ill - defined areas of opacification within the right lung and left lung base . Findings appear relatively similar when compared to the prior chest CT , with the findings in the right upper lobe likely reflecting resolving pneumonia , and findings elsewhere in the lungs suggestive of underlying chronic interstitial lung disease ( such as cryptogenic organizing pneumonia or NSIP , as noted in the prior CT ) . No new areas of consolidation identified .