Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior film , I doubt significant interval change . Again seen is a moderate left effusion , with underlying collapse and / or consolidation . There is also minimal blunting at the right costophrenic angle consistent with a small right pleural effusion , very slightly larger . CHF may be very slightly improved .
    OUTPUT:
    
As above . .