Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bilateral airspace abnormalities , right worse than left , are persistent , but improving . A small left and small right pleural effusion are present . A Swan - Ganz catheter terminates in appropriate position . A NG tube is seen coursing into the stomach and off the view of the film . A left - sided dialysis line terminates in the superior SVC . A left - sided pigtail chest tube is in unchanged position as is a right - sided drain with the tip projecting in the region of the right mediastinum . Widening of the mediastinum is a persistent abnormality , but decreasing since the immediate postoperative films . Sternotomy wires are intact and aligned . Large right perihilar calcified lymph nodes are unchanged . There is no pneumothorax .
    OUTPUT:
    
Improving right pneumonia and mild edema .