Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild enlargement of the cardiac silhouette is unchanged . Mediastinal and hilar contours are similar . Pulmonary vasculature is not engorged . Blunting of the costophrenic angles bilaterally could suggest chronic pleural thickening or trace pleural effusions . No focal consolidation , large pleural effusion or pneumothorax is present . No acute osseous abnormality is detected . Mild degenerative changes are noted in the thoracic spine .
    OUTPUT:
    
Blunting of the costophrenic angles bilaterally may suggest trace pleural effusions or chronic pleural thickening . Otherwise , no acute cardiopulmonary abnormality .