Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . There has been interval placement of a right IJ dialysis catheter with its tip residing at the low SVC level . Mild hazy opacity at the left lung base is most compatible with atelectasis though an early pneumonia is difficult to exclude in the correct clinical setting . Otherwise the lungs appear clear . No definite sign of effusion or pneumothorax . Heart and mediastinal contours appear stable and normal . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
Left basal opacity likely represents atelectasis though an early pneumonia is impossible to exclude . Dialysis catheter appears positioned appropriately .