Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in sitting semi-upright position . Analysis is performed with the next preceding portable supine chest examination of ___ . Again an almost complete left - sided whiteout is noted consistent with large pleural effusion probably combined with pulmonary mass as there is no significant shift of the mediastinum . The previously described pigtail catheter is again noted to terminate in the lateral pleural space at hilar level . No pneumothorax is seen in the apical area . The right hemithorax demonstrates normal - appearing lung without evidence of congestion or pleural effusion .
    OUTPUT:
    
Stable chest findings , no significant interval change in comparison with next previous study one day earlier .