Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low . The heart is at the upper limits of normal size . Mediastinal and hilar contours are unremarkable . There is slight blurring of the left cardiac border on the frontal view but suspected to represent a pericardial fat pad . There is no pleural effusion or pneumothorax . Minimal degenerative changes are noted along the mid thoracic spine .
    OUTPUT:
    
No evidence of acute disease .