Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well - expanded . Peribronchial opacity in the left lower lobe is more conspicuous compared to prior studies , possibly reflecting aspiration or pneumonia in the appropriate clinical setting . There is no large pleural effusion , overt pulmonary edema , or pneumothorax . The cardiomediastinal silhouette is stable . The descending thoracic aorta is quite tortuous , unchanged compared to prior studies .
    OUTPUT:
    
Left lower lobe peribronchial opacity could reflect aspiration or pneumonia in the appropriate clinical setting .