Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate unchanged moderate cardiomegaly . The lungs are fairly well - aerated , with opacity at the left lung base unchanged and again suggestive of scarring . There is no focal consolidation or pneumothorax . Minimal blunting of the cardiophrenic angles bilaterally suggests minimal , if any , pleural effusion . The visualized upper abdomen is unremarkable , other than surgical clips projecting over the right upper quadrant , unchanged .
    OUTPUT:
    
Minimal , if any , pleural effusion . No evidence of pneumonia .