Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low . The ET tube and right IJ Cordis are unchanged . There is increased opacity at both bases . It is unclear how much of this is due to volume loss or an underlying infectious infiltrate . There is mild pulmonary vascular redistribution and a probable small left effusion .
    OUTPUT:
    
Compared to the prior , volume loss and opacity at both bases are increased .