Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Redemonstrated is a paucity of vessels seen within the bilateral upper zones , consistent with the patient 's known emphysema . As compared to the prior examination , there has been an increase in the overall density of the bilateral lower lobes , which likely represents a developing pneumonia . There is no pleural effusion , pneumothorax , or pulmonary edema identified . The heart size is normal . Mediastinal contours are normal .
    OUTPUT:
    
1 . Increased bibasilar opacities , which likely represents a developing pneumonia . Recommend follow up chest radiographs in ___ weeks following the completion of antibioic therapy to document resolution . 2 . Stable biapical emphysematous changes . Findings were communicated by Dr . ___ to Dr . ___ ___ telephone at 11 : 15 am on ___ , 5 minutes after discovery .