Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The mediastinal and hilar contours appear unchanged . The chest is hyperinflated . Streaky right basilar opacity suggests minor atelectasis or scarring , not significantly changed aside from mild shifting in morphology . There is no definite pleural effusion or pneumothorax . Mild degenerative changes are similar along the thoracic spine .
    OUTPUT:
    
No evidence of pneumonia or congestive heart failure . Findings suggesting obstructive pulmonary disease .