Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: All the monitoring and support devices are unchanged within standard position . Patient is after sternotomy for cardiac surgery . Lung volume is still low but the left upper lobe opacification is reduced , likely for reabsorption of edema component . Also , the left base pleural effusion is reduced . The right basilar opacification is slightly increased for increased pleural effusion . Heart is still mildly enlarged . There is no pneumothorax .
    OUTPUT:
    
Reduced left upper lobe opacification likely for reduced edema component . Reduced left base pleural effusion , but increase in the right base .