Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Clear lungs bilaterally without pleural effusion or pneumothorax . Heart size and mediastinal contour are normal .
    OUTPUT:
    
No pneumonia . Results were conveyed by Dr .___ ___ on ___ to Dr .___ ___ at 4 :00 PM within 10 minutes of observation of findings .