Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouette is normal . There is no evidence of pleural effusion or pneumothorax . Lung volumes are lower than prior . There is subtle increased opacification of the right lung base . Bronchial wall thickening may be due to history of asthma . No acute osseous abnormality . Degenerative changes of the acromioclavicular joint bilaterally . Surgical clips again noted in the left upper quadrant .
    OUTPUT:
    
Subtle increased opacity of the right lung base , with may represent a developing pneumonia . Short - term followup radiographs may be helpful in this regard .