Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The mediastinal and hilar contours appear within normal limits . Streaky opacities at the right lung base are minor and suggest slight atelectasis , which is frequently seen with asthma , but without definite findings suggestive of pneumonia . There is no pleural effusion or pneumothorax . Mild degenerative changes along the mid through lower thoracic spine appear unchanged as well .
    OUTPUT:
    
No evidence of acute cardiopulmonary disease .