Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is at the upper limits of normal size . The aortic arch is partly calcified . Basilar opacities , greater on the right than left , are non-specific but could be seen with atelectasis . Although study does not represent a dedicated rib series , no evidence for a rib fracture is seen . The bones are probably demineralized to some degree .
    OUTPUT:
    
No definite acute process . Basilar opacities , suggested to represent atelectasis , although in the appropriate clinical setting airway inflammation or pulmonary infection can not be entirely excluded by this study .