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 dated ___ . Previously described cardiac enlargement appears unchanged . The same holds for the previously described right internal jugular approach central venous line terminating in the lower SVC . Successful right - sided thoracocentesis has resulted in elimination of right - sided basal effusion , now with clear visibility of diaphragmatic contours . The pulmonary vasculature in the right hemithorax does not appear congested , and there is no evidence of a post - procedure pneumothorax in the apical area . On the left side , the previously described pleural effusion obscuring the diaphragmatic structures remains rather unchanged . No new pulmonary parenchymal infiltrates are seen .
    OUTPUT:
    
Successful thoracocentesis with removal of pleural effusion in right hemithorax and absence of post-interventional pneumothorax . Estimate of pleural effusion based on single view observation is between 750 to ___ mL .