Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The inspiratory lung volumes are low , which accentuates the size of the cardiac silhouette and prominence of the mediastinum . Given this , the cardiac silhouette is likely stable . There is slightly increased prominence of the right mediastinum , adjacent to level of right mainstem bronchus which may relate to low lung volumes vs unfolded and prominent ascending aorta vs lymph nodes . There is increased airspace opacity in the left lung base on the frontal radiograph which may correspond to increased density projecting over the lower lobe on the lateral radiograph . No significant pleural effusion or pneumothorax is present . The trachea is slightly deviated to the right from the prominent , unfolded thoracic aorta . There is no free air beneath the right hemidiaphragm .
    OUTPUT:
    
1 . Airspace opacity involving the left lower lobe may represent developing pneumonia in the appropriate clinical context . 2 . Slight prominence of the right mediastinum may relate to low lung volumes , an unfolded ascending aorta or , alternatively , a soft tissue density such has lymphadenopathy . Findings can be further evaluated on nonurgent chest CT .