Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bibasilar atelectasis is seen without definite focal consolidation . No pleural effusion or pneumothorax is seen . Cardiac silhouette is top - normal in size . The aorta is calcified and slightly tortuous . Multi - level degenerative changes are noted along the spine .
    OUTPUT:
    
Bibasilar atelectasis without definite focal consolidation .