Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP upright portable view of the chest was obtained . The lungs remain hyperinflated . Costochondral calcifications are again evident . There is evidence of multiple old rib fractures , particularly on the left . Patchy left base retrocardiac opacity most likely relates to atelectasis , although early consolidation can not be excluded in the appropriate clinical setting . No large pleural effusion or pneumothorax . The aorta remains calcified and tortuous . The cardiac silhouette is stable .
    OUTPUT:
    
Patchy left base retrocardiac opacity most likely relates to atelectasis , although an early consolidation can not be excluded in the appropriate clinical setting . Dedicated PA and lateral views of the chest could be helpful for further evaluation .