Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . There is mild tortuosity along the descending aorta . Streaky left infrahilar opacities are most suggestive of minor atelectasis or bronchopneumonia in the lingula . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Lingular opacity suggesting pneumonia versus atelectasis .