Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . Heart size is normal . Left perihilar opacity obscures the upper left heart border . The lungs are otherwise clear . No pleural effusion or pneumothorax .
    OUTPUT:
    
Left perihilar opacity is consistent with pneumonia in the appropriate clinical setting . Findings were communicated via phone call by Dr . ___ to Dr . ___ ___ on ___ at 13 :32 PM .