Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are stable with unchanged position of valve replacements and median sternotomy wires . There is unchanged position of a left brachiocephalic vein stent . Blunting of the right costophrenic angle is unchanged . There is a new blunting of the left costophrenic angle since ___ , indicative of a small pleural effusion . There is no pneumothorax . Lungs are well expanded . Minimal linear atelectasis is present at the right lung base . There is no focal consolidation concerning for pneumonia . Pulmonary vasculature is within normal limits .
    OUTPUT:
    
New small left pleural effusion . No pulmonary edema .