Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate a left chest wall pacer device with leads overlying the right atrium and ventricle . The cardiomediastinal silhouette is normal . There is increased opacity in the inferior right upper lobe , concerning for pneumonia . No pleural effusion or pneumothorax is identified . The visualized upper abdomen is unremarkable .
    OUTPUT:
    
Right upper lobe opacity , concerning for pneumonia .