Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low inspiratory volumes . A right IJ sheath is now present , tip near the expected site of confluence of the right IJ and right subclavian veins . No obvious pneumothorax detected . Compared to the prior study , the right effusion is now larger , with underlying collapse and / or consolidation . Exact position of the diaphragm is not well - defined . There is minimal patchy opacity at the left base not clearly changed . No left effusion . There is upper zone redistribution and mild vascular plethora , but doubt overt CHF .
    OUTPUT:
    
Interval increase in size of right effusion , now small to moderate in size , with underlying collapse and / or consolidation .