Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Left chest wall pacer device is again noted with leads extending into the region of the right atrium and right ventricle . Midline sternotomy wires and mediastinal clips are again noted . There is a linear density projecting over the right lower lung which is unchanged and may represent scarring . No convincing evidence for pneumonia or edema . No large effusion or pneumothorax . The heart is top - normal in size . Mediastinal contour is normal . No acute bony abnormalities .
    OUTPUT:
    
No signs of pneumonia .