Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A Swan - Ganz catheter ends in the region of the right main pulmonary artery . A cardiac valve is in unchanged position . Multiple surgical drains project over the mediastinum . Apparent right and left chest tubes are in unchanged position . An endotracheal tube ends in mid thoracic trachea . An apparent enteric tube is only able to be seen to the level of the distal esophagus likely due to technique . A right PICC ends in the region of the low SVC . Pulmonary edema has improved . Atelectasis is noted at the lung bases bilaterally .
    OUTPUT:
    
Pulmonary edema has improved . No pneumothorax .