Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right - sided central venous catheter via a right internal jugular approach terminates at the superior cavoatrial junction . The cardiomediastinal and hilar contours are within normal limits . The heart is normal in size . The lungs are somewhat low volume . There is no pneumothorax or pleural effusion identified . Subtle opacities seen in the bilateral lung bases could represent atelectasis , aspiration or possible atypical , predominately interstitial infection . There is mild pulmonary vascular congestion .
    OUTPUT:
    
Patchy bibasilar opacities could represent atelectasis , aspiration or infection . pulmonary vascular congestion with mild interstitial edema .