Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged . Mild unfolding is noted along the thoracic aorta . The chest is hyperinflated . There is no pleural effusion or pneumothorax . Vague peripheral reticulation in each lower lung is suggestive of mild interstitial lung disease , which is most likely chronic . No prior comparison is available . Elsewhere , the lung fields appear clear . Bony structures are unremarkable .
    OUTPUT:
    
Mild cardiomegaly . Findings suggesting interstitial lung disease , but without definite acute process .