Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is at the upper limits of normal size . The mediastinal and hilar contours appear within normal limits aside from slight unfolding of the thoracic aorta . Slight blunting of each costophrenic sulcus is indeterminate but could reflect tiny effusions . The lateral view suggests interstitial changes , but probably mild , in the periphery of the posterior costophrenic sulci . This may correlate with vague reticular opacities in the lower lungs on the AP view . Otherwise , the lungs appear clear , however . There is no pneumothorax . The bones appear demineralized , but there is no evidence of fracture . Degenerative changes involve the shoulder , where the glenohumeral and acromioclavicular joints appear narrowed with prominent marginal osteophytes bilaterally . There is mild rightward convex curvature centered along the mid thoracic spine with small osteophytes along the thoracic spine .
    OUTPUT:
    
No evidence of injury . Findings suggesting mild interstitial abnormalities at the lung bases . Possible trace pleural effusions .