Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild pulmonary edema is unchanged . The lung volumes are slightly lower than the previous exam with increased left lower lung atelectasis and small pleural effusion . The patient had prior sternotomy for CABG . Mild cardiac enlargement is stable . Calcified granuloma in right lower lobe is unchanged . There is no pneumothorax .
    OUTPUT:
    
Mild pulmonary edema is stable .