Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . Previously seen moderate left pleural effusion has decreased in size . There is no evidence of pneumothorax . A cardiac stent or calcified coronary arteries seen . Sternotomy wires are seen . The right lung is clear with no effusion . There may be a tiny small residual left pleural effusion . Mediastinal and hilar contours are normal .
    OUTPUT:
    
Decrease in the left pleural effusion , now with just a small residual . No pneumothorax .