Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear stable . The chest is hyperinflated . There is a small - to - moderate right anterior eventration of the right hemidiaphragm . Streaky opacities at the lung bases suggest minor atelectasis . There is no definite pleural effusion or pneumothorax . Mild degenerative changes affect the mid thoracic spine .
    OUTPUT:
    
No evidence of acute cardiopulmonary disease .