Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval increase in moderate - sized left pleural effusion . Sternotomy wires are intact and vascular clips noted . No pneumothorax and right lung is clear without pleural effusion . Heart size is top normal with normal mediastinal contour and hila . No bony abnormality . Aortic calcifications are noted in the aortic arch .
    OUTPUT:
    
Interval increase in moderate - sized left pleural effusion .