Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A portable upright chest radiograph shows dense obscuration of the left diaphragm , which has been present since prior films over the past month and does not appear to have progressed . Some of this opacity may be related to left pleural fluid as evidenced by some blunting of the costophrenic angle . There is increasing obscuration of the right hemidiaphragm and while radiographically the changes could be related to a combination of atelectasis and fluid , new pneumonia can not be excluded . Tracheostomy tube and nasogastric tube are in unchanged position in this patient with scoliosis .
    OUTPUT:
    
Obscuration of the left base appears unchanged over recent weeks , but opacity at the right lung base is increasing , question pneumonia .