Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval increase in size of the cardiac and mediastinal contours with narrowing of the the tracheobronchial tree concerning for progression of known lymphadenopathy . Streaky bibasilar opacities which most likely reflect atelectasis in the setting of low lung volumes , although pneumonia can not be entirely excluded . . There is no pleural effusion or pneumothorax . The visualized osseous structures are unremarkable .
    OUTPUT:
    
1 . Interval increase in widening of the mediastinal and hilar contours and interval cardiac enlargement with associated narrowing of the tracheobronchial tree . Findings are concerning for progression of disease . Further imaging evaluation with dedicated chest CT is recommended at this time . 2 . Bibasilar opacity may reflect atelectasis , although pneumonia can not be excluded .