Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A Swan - Ganz catheter ends in the right main pulmonary artery . A left chest tube is in unchanged position . The endotracheal , nasogastric and right chest tubes have been removed . The lung volumes remain low and pulmonary edema persists . Right upper and left lower lobe opacities are relatively unchanged . A probable small left pleural effusion persists . No pneumothorax is identified . Median sternotomy wires are intact .
    OUTPUT:
    
1 . Interval removal of a endotracheal , nasogastric and right chest tubes . No pneumothorax . 2 . Pulmonary edema is relatively unchanged .