Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in supine position . Comparison is made with the next preceding similar study of ___ with patient in semi-upright position . Patient remains intubated , the ETT in unchanged position terminating some 4 cm above the level of the carina . An NG tube exists as before and reaches well below the diaphragm . Unchanged position of previously described right subclavian central venous line . Mediastinal shift towards the right exists and results in reduced pulmonary volume of the right hemithorax . Comparison of the portable frontal view suggests that the amount of pleural effusion of the right side has increased again as now a 1 cm wide dense layer inside the right lateral chest wall is seen . There is no evidence of pneumothorax on either side .
    OUTPUT:
    
No significant interval change on these portable chest examinations during the latest one day observation interval .