Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is increased upper zone redistribution , consistent with mild fluid overload / CHF . Again seen is increased retrocardiac density , consistent with left lower lobe collapse and / or consolidation . Hazy density adjacent to this could represent a small left effusion . There is patchy opacity at the right lung base , which is more pronounced on the current examination , with minimal blunting of the right costophrenic angle .
    OUTPUT:
    
1 . CHF , more pronounced on the current film , with small bilateral effusions . 2 . Left lower lobe collapse and / or consolidation and increased patchy opacity at the right base . While this could relate to the presence of CHF , the possibility of an associated infectious infiltrate can not be excluded .