Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Left hilar opacity could represent lymphadenopathy or a mass . No pleural effusion or pneumothorax . The heart size is normal . No displaced rib or sternal fracture .
    OUTPUT:
    
1 . Left hilar opacity , consistent with contusion , lymphadenopathy , or mass . Short interval imaging or chest CT should be obtained for further evaluation . 2 . No displaced rib or sternal fracture . Findings were communicated via phone call by Dr . ___ to Dr . ___ ___ on ___ at ___ AM .