Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in semi-upright position . Comparison is made with the next preceding similar study of ___ . Again noted is right - sided chest wall emphysema slightly reduced since yesterday . No new abnormalities are present . Hazy basal densities bilaterally as before , indicative of pleural effusions . Right - sided PICC line again identified , seen to terminate overlying the right - sided upper mediastinum , 2 cm above the level of the carina . No pneumothorax is present .
    OUTPUT:
    
Grossly unchanged findings . No new pulmonary abnormalities .