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 . Analysis is performed in direct comparison with the next preceding similar study obtained on the preceding day , ___ . Status post sternotomy as before . Unchanged position of previously described NG tube and right - sided chest tubes terminating in right apical area . Cardiac enlargement as before and hazy density over left lung base most likely representing pleural effusion layering in the posterior compartments . The on previous examination identified small less than 1 cm wide apical pneumothorax can not be identified anymore . This indicates effective drainage via the right - sided chest tubes . No new pulmonary parenchymal abnormalities are seen .
    OUTPUT:
    
Dissappearance of small right apical pneumothorax residual . Stable chest findings .