Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior study , the large left pleural effusion resulting in complete collapse of the left lung is now moderate to large , with residual partial collapse of the left upper and lower lobes , although improved . Small right pleural effusion is unchanged .
    OUTPUT:
    
Decrease in size of left pleural effusion , now moderate to large . Continued partial collapse of the left upper and lower lobes .