Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear unchanged . The heart is again at the upper limits of normal size . The aorta shows patchy calcification and is mildly tortuous . Band - like opacity in the left lower lung is compatible with scarring that appears unchanged . Similarly , there is patchy streaky opacity in the right infrahilar region , also suggestive of minor atelectasis or scarring , although new . Lungs are hyperinflated . Mild degenerative changes are similar along the thoracic spine . The bones are probably demineralized to some extent , and incompletely visualized , an upper lumbar compression deformity is probably unchanged .
    OUTPUT:
    
Patchy medial right basilar opacity , probably attributable to minor atelectasis or scarring , although new since the prior study and not entirely specific .