Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right - sided dual - lumen central venous catheter with distal tip seen within the right atrium . There is a vague left basilar opacity . Elsewhere the lungs are grossly clear . There is no effusion . Cardiac silhouette is likely enlarged and there is tortuosity of the thoracic aorta . No acute osseous abnormalities identified .
    OUTPUT:
    
Left basilar opacity potentially infection in the proper clinical setting .