Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left chest wall pulse generator with continuous pacemaker leads terminating in the right atrium and right ventricle is unchanged in position . The cardiomediastinal silhouette is stable in appearance . Lung volumes are low , and left lower lobe opacity is more conspicuous compared to the most recent comparison studies from ___ . Mild prominent interstitial markings persist , possibly due to underlying chronic interstitial lung disease , with superimposed mild pulmonary edema . No pneumothorax or pleural effusion .
    OUTPUT:
    
Increased left lower lobe opacity , compatible with pneumonia in the appropriate clinical setting , with superimposed mild pulmonary edema . Followup radiographic evaluation after treatment is recommended to ensure resolution .