Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right IJ central venous line has been removed . Very low lung volumes crowd the pulmonary vasculature . There is an increase in pulmonary edema compared to prior study . No large pleural effusions . No pneumothorax . Cardiomediastinal and hilar contours are stable . The right PICC is unchanged and position likely in the right atrium .
    OUTPUT:
    
Low lung volumes and mild increase in pulmonary edema compared to ___ .