Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP portable view of the chest was obtained . The patient is status post median sternotomy . There is mild - to - moderate pulmonary edema . The cardiac silhouette is mildly enlarged . No large pleural effusions are seen , but small pleural effusions to be difficult to exclude . Right base opacity most likely represents a prominent vascular structure , although underlying consolidation due to aspiration or infection not excluded . Mediastinum is within normal limits .
    OUTPUT:
    
Pulmonary edema and mild cardiomegaly . Difficult to exclude small pleural effusions . Patchy right base opacity may relate to prominent vascular structures , although underlying consolidation from aspiration or infection may be present .