Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded , though there is minimal airspace opacity in the right infrahilar region which may reflect mild aspiration pneumonitis or developing pneumonia . The pleural surfaces are normal . The cardiac silhouette and mediastinal contours are normal . In the interim , a right IJ approach hemodialysis catheter has been removed . The pulmonary vasculature is normal .
    OUTPUT:
    
Mild right infrahilar airspace opacity , which may reflect aspiration or infection .