Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The inspiratory lung volumes are appropriate . There is no significant pleural effusion or pneumothorax . Faint opacification and blunting of the right costophrenic angle on the AP view may represent an early developing pneumonia . The pulmonary vasculature is not engorged . The cardiac silhouette is normal in size . The mediastinal and hilar contours are within normal limits allowing for slight unfolding and tortuosity of the thoracic aorta . There is calcification of the aortic knob . Diffuse osseous demineralization is noted . There are multilevel degenerative changes in the thoracic spine .
    OUTPUT:
    
Airspace opacity in the right lung base may represent an early developing pneumonia .