Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are within normal limits . Patchy opacities at the lung bases are concerning for pneumonia . There is no pneumothorax , fracture or dislocation . Surgical clips are noted in the right upper quadrant , consistent with cholecystectomy .
    OUTPUT:
    
Patchy opacities at the lung bases bilaterally are concerning for pneumonia .