Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior exam , the endotracheal tube , nasogastric tube , Swan - Ganz catheter , and left chest tube have been removed . A right subclavian central venous catheter is in unchanged position with the tip in the right atrium . There is no pneumothorax . Retrocardiac volume loss has increased . Linear opacities at the bilateral bases are likely atelectasis . There is no pulmonary edema or definite pleural effusion . The cardiomediastinal silhouette is unchanged , with a postoperative appearance of the mediastinal and mild enlargement of the heart . Sternal wires and mediastinal clips are present .
    OUTPUT:
    
1 . Removal of the left chest tube . No evidence of pneumothorax . 2 . Right subclavian central venous catheter with tip in the right atrium . 3 . Increased retrocardiac and bibasilar atelectasis .