Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no visible pneumothorax . The right chest tube is in unchanged position . The endotracheal tube , the right jugular line and the NG tube are stable . The right lung base is better aerated . Stability of the left mild pleural effusion with compressive atelectasis . Stability of the mild right pleural thickening at the base , probably compatible with a hemothorax secondary to rib fractures . The mediastinal and cardiac contours are unchanged .
    OUTPUT:
    
Except for a better aeration of the right lung base , there is no significant change since the previous exam .