Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The aortic knob is calcified . The mediastinal contours are unremarkable . Patchy opacities are noted in the lung bases which is concerning for infection . No pleural effusion or pneumothorax is seen . There is likely mild pulmonary vascular congestion . No acute osseous abnormalities are visualized .
    OUTPUT:
    
Patchy bibasilar airspace opacities are concerning for infection in the correct clinical setting .