Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable chest radiograph demonstrates unremarkable mediastinal , hilar , and cardiac silhouettes . Overall , there is improved aeration with minimal residual atelectasis in bilateral lung bases . There has been interval removal of mediastinal and chest tube drains without development of pneumothorax . SG catheter , nasogastric tube , and endotracheal tube have also been removed . No pleural effusion evident .
    OUTPUT:
    
Interval removal of chest tube without development of pneumothorax . Improved aeration of lungs bilaterally . No pleural effusion .