Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are normal . Pulmonary vasculature is normal . Minimal patchy opacities in the lung bases are new in the interval , potentially atelectasis though infection or aspiration can not be excluded . No pleural effusion or pneumothorax is demonstrated . A right - sided VP shunt catheter is noted coursing along the right hemi thorax . No acute osseous abnormalities are visualized .
    OUTPUT:
    
New patchy bibasilar opacities , potentially atelectasis , but infection or aspiration can not be excluded .