Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The endotracheal tube tip is 2 .7 cm above the carina , unchanged . The NG tube and left IJ line tip in the lower SVC are unchanged . Since the prior radiograph , the right lung volume is lower , producing at least atelectasis . However , elevation of the right hemidiaphragm may be due to a subpulmonic effusion . Pneumonia can not be ruled out . A skin fold projecting over the left apex should not be mistaken for a pneumothorax . There is no focal left lung consolidation concerning for pneumonia .
    OUTPUT:
    
Interval decrease of the right lung volume , producing at least atelectasis . There may be a right pleural effusion , evidenced by a right hemidiaphragm elevation . Pneumonia can not be excluded .