Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Clear lungs bilaterally without pleural effusion or pneumothorax . Heart size , mediastinal contour and hila are normal . No bony abnormality .
    OUTPUT:
    
Normal chest radiograph . Results were conveyed via telephone to Dr . ___ by Dr . ___ ___ on ___ at 12 p .m . within five minutes of observation of findings .