Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild cardiomegaly is persistent compared to exams dated back to at least ___ . Mild bilateral perihilar vascular congestion appears overall stable compared to the prior exam . New opacity in the retrocardiac region is concerning for pneumonia . There is no large pleural effusion or pneumothorax . The visualized osseous structures are unremarkable .
    OUTPUT:
    
1 . New opacity in the retrocardiac region is concerning for pneumonia . 2 . Mild pulmonary edema . These findings were discussed with Dr . ___ by Dr . ___ by phone at 2 :___ ___m . on the day of the exam .