Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained . There are underlying emphysematous changes . There is no convincing focal consolidation concerning for pneumonia . A vague opacity in the left lower lobe is likely secondary to chronic scarring . No pleural effusion , pulmonary edema , or pneumothorax is seen . The cardiomediastinal and hilar silhouette is normal . Bony structures are intact .
    OUTPUT:
    
No convincing signs of pneumonia . A vague opacity in the left lower lobe is likely secondary to chronic scarring .