Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Thumb the act enlargement is accompanied by a tortuosity of the thoracic aorta a . Lung volumes are slightly low , and the lateral radiograph is further limited by respiratory motion . Lungs are clear except for a nonspecific patchy opacity at the right lung base . No pleural effusion . Multilevel degenerative changes are present in the spine .
    OUTPUT:
    
Patchy right lower lobe opacity could reflect patchy atelectasis , aspiration , or an early focus of infectious pneumonia . Short - term followup radiographs may be helpful in this regard .