Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The hilar and mediastinal contours are normal . Overall , the background density of the lung interstitium is abnormally increased , which appears chronic , and is likely secondary to emphysema . No consolidations concerning for acute pneumonia are identified . There are no pleural effusions or pneumothorax . The visualized osseous structures are unremarkable .
    OUTPUT:
    
1 . No focal consolidations concerning for pneumonia identified . 2 . Increased background density of the lung interstitium is abnormally increased , which is chronic and likely secondary to emphysema , however these findings would have more clinical significance if the patient was immunocompromised . Updated findings were submitted to the ED QA nurse group by Dr . ___ ___ at 8 : ___a on the day of the exam .