Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Semi-upright portable chest radiograph demonstrates interval removal of a left chest tube . There is no definite pneumothorax . There is bibasilar opacity , likely reflecting a combination of atelectasis , and / or effusion . A Swan - Ganz catheter remains inserted through right IJ access sheath . The tip is in the main pulmonary outflow tract . An endotracheal tube is unchanged in position . An NG tube is not well seen , or as it was previously seen passing into the stomach . Median sternotomy wires are unchanged .
    OUTPUT:
    
1 . Interval removal of left chest tube , no definite pneumothorax on this semi-erect portable film . 2 . Unchanged appearance of support tubes and devices , though the NG tube is not well seen below the level of the mediastinum , which may be technique related . 3 . Unchanged bibasilar opacity , likely reflecting combination of atelectasis and effusion .