Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient has had prior median sternotomy . Sternotomy wires are intact and aligned . All support devices , including ET tube , feeding tube , and right IJ central line remain in satisfactory position . A moderate layering left pleural effusion has increased . A small layering right pleural effusion is unchanged . There is no pneumothorax . There is stable elevation of the right hemidiaphragm .
    OUTPUT:
    
Increased moderate layering left pleural effusion . Developing infection at the left lung base with possible empyema should be considered . Stable small layering right pleural effusion .