Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again seen are bilateral chest tubes with no pleural effusion , focal collection or evidence of pneumothorax . Cardiomediastinal silhouette is unchanged . Linear opacities at the bases , likely atelectasis . Median sternotomy wires are present .
    OUTPUT:
    
Bilateral chest tubes . No evidence of pleural collection or pneumothorax .