Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are unremarkable . Linear opacities in the lung bases are compatible subsegmental atelectasis . Ill - defined interstitial and nodular opacities within both upper lobes lung fields with associated peribronchial cuffing may reflect an infectious or inflammatory process . No focal consolidation , pleural effusion or pneumothorax is seen . Deformity of the left humeral head may reflect remote trauma .
    OUTPUT:
    
Ill - defined interstitial and nodular opacities in both upper lung fields with peribronchial cuffing could reflect a small airways infectious or inflammatory process .