Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP frontal portable chest radiograph demonstrates a unchanged appearance of right - sided loculated pleural fluid with associated atelectasis . Left lung is grossly clear . There is no pneumothorax or mediastinal air . Cardiac silhouette is stable in appearance . Patient is status post CABG with median sternotomy wires intact .
    OUTPUT:
    
No pneumothorax or pneumomediastinum .