Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chest PA and lateral radiograph demonstrates focal opacification obscuring the left heart border , consistent with pneumonia . No recent chest radiograph provided to evaluate for interval change . No pleural effusion or pneumothorax is evident . Mediastinal , hilar and cardiac silhouettes are normal .
    OUTPUT:
    
Focal opacification in the lingula consitent with pneumonia . Recommend continued imaging surveillance to evaluate for resolution .