Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild cardiomegaly is unchanged . Mediastinal contours normal . Haziness at the left lung base likely due to a large epicardial fat pad , unchanged . The crescentic region of scarring in the left upper lobe has varied slightly in appearance between chest radiographs , but is long - standing . There are no radiographic findings of pneumonia or pulmonary edema . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No radiographic evidence of pneumonia or cardiac decompensation .