Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are within normal limits . There is mild bibasilar atelectasis . Very subtle area of increased opacity overlying the lower thoracic spine posteriorly , seen only on the lateral view is concerning for an early developing consolidation . No large pleural effusion identified . No pneumothorax .
    OUTPUT:
    
1 . Posterior lower lobe consolidation seen on the lateral view , could represent a focal area of developing pneumonia in the appropriate clinical setting . Short interval followup recommended after treatment to confirm resolution . 2 . Mild bibasilar atelectasis .