Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Persistent subtle right lower lobe and retrocardiac opacity . Left basilar atelectasis is noted . No pulmonary edema . No pleural effusion or pneumothorax . Heart is top - normal in size . Mediastinal contour and hila are unremarkable . Intact median sternotomy wires . Mediastinal clips are noted .
    OUTPUT:
    
Bilateral lower lobe bronchopneumonia , unchanged in appearance since prior examination .