Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear unchanged . The heart is at the upper limits of normal size . Bilaterally , nipple shadows are visualized . The lungs appear clear . The interstitium was more prominent on the prior examination than now . There are no pleural effusions or pneumothorax . Mild hyperinflation is noted . Severe degenerative changes are partly visualized along the right shoulder .
    OUTPUT:
    
No evidence of acute disease .