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 obtained on ___ . The patient remains intubated , the ETT terminating in the trachea some 4 cm above the level of the carina . Comparison with the next preceding study , a right - sided lateral chest wall approach small caliber pigtail terminating terminating chest tube has been placed . Drainage of the pleural effusion must have been effective as the previously existing right - sided density has decreased markedly so that the right - sided diaphragm can now be identified . The lateral pleural sinus , however , appears still to be mildly blunted . There is no evidence of pneumothorax on either side in the apical area . Some degree of perivascular haze exists in both lungs , similar as before .
    OUTPUT:
    
Appropriate placement of pigtail chest tube right base with effective elimination of previously existing pleural effusion .