Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged . The aortic knob is calcified . Mediastinal contour is unremarkable . Lungs are hyperinflated suggestive of COPD . Enlargement of the hila bilaterally suggests dilated pulmonary arteries which can be seen with pulmonary arterial hypertension . Pulmonary vasculature is not engorged . Mildly increased diffuse interstitial opacities may be due to a chronic interstitial lung abnormality , but no focal consolidation , pleural effusion or pneumothorax is seen . There are mild degenerative changes noted in the thoracic spine .
    OUTPUT:
    
Diffuse increased interstitial opacities may be due to a chronic interstitial lung disease . No focal consolidation to suggest pneumonia . Enlargement of pulmonary arteries suggests pulmonary arterial hypertension .