Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Two chest tubes are in left hemithorax without visible pneumothorax . Mild residual pleural thickening is unchanged since yesterday . Moderate mediastinal and cardiac contour enlargement is stable . Bibasilar opacities are stable since the ___ but increased since ___ . This could be explained by pneumonia , atelectasis or aspiration . There is mild cardiac congestion .
    OUTPUT:
    
There is no significant change since yesterday . Bibasilar opacities are unchanged since ___ but increased since ___ could reflect atelectasis , infection or aspiration .