Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung is well inflated , with small linear atelectasis in the left lower lobe . In the appropriate clinical setting , pneumonia should be considered . Mild flattening of the hemidiaphragm is for mild hyperinflation . Cardiomediastinal silhouette is normal . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Small atelectasis in the left lower lobe . In the appropriate clinical setting , pneumonia should be considered .