Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to most recent prior radiograph , moderate bilateral pleural effusions are unchanged . Left basilar atelectasis is improved . There is no focal consolidation or pneumothorax . There are bilateral chest tubes , mediastinum slightly widened likely postoperative . Cardiomediastinal silhouette is otherwise unchanged . Median sternotomy wires are intact . There is no evidence of pulmonary congestion .
    OUTPUT:
    
Bilateral pleural effusions and improved atelectasis at the left base . No evidence of pulmonary edema .