Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged . There is mild unfolding of the thoracic aorta and calcification along the arch . Patchy linear opacification in the left lower lung suggests minor atelectasis or scarring . There is no pleural effusion or pneumothorax . There is a prominent epicardial fat pad near the cardiac apex . Mild leftward convex curvature is noted along the thoracic spine with mild degenerative changes . The bones appear probably demineralized .
    OUTPUT:
    
No evidence of acute disease .