Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Left IJ access dialysis catheter is noted with catheter tip in the region of the cavoatrial junction . There is a linear density in the right lower lung which could represent a focus of atelectasis . There is also a linear density in the left mid to lower lung which likely also represents a focus of atelectasis . No signs of pneumonia or edema . No large effusion or pneumothorax . Heart and mediastinal contours appear normal . Bony structures are intact . No free air below the right hemidiaphragm seen .
    OUTPUT:
    
Minimal atelectasis in the lower lungs . Hemodialysis catheter appears to be positioned appropriately .