Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is faint opacity at the left lower lobe which may be atelectasis however pneumonia is also possible in correct clinical setting . There is no pleural effusion or pneumothorax . Cardiomediastinal and hilar silhouette are normal size .
    OUTPUT:
    
Faint opacity at the left lower lobe may be atelectasis , however pneumonia is also possible in correct clinical setting .