Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Minimal peribronchial cuffing with mild perihilar opacities and mild cardiomegaly is most consistent with mild pulmonary edema . A rounded 1 .8 cm dense retrocardiac opacity is noted . No pleural effusion or pneumothorax . Mediastinal contour is unremarkable . Aortic arch calcifications are present .
    OUTPUT:
    
1 . Mild pulmonary edema with mild cardiomegaly . 2 . Rounded 1 .8 cm dense retrocardiac opacity may represent a partially calcified lymph node or pulmonary nodule . Differential includes focal pneumonia in the appropriate clinical setting . Comparison with prior films would be helpful and if not available consider repeat frontal and lateral chest radiograph 6 weeks after resolution of symptoms .