Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Slightly lordotic positioning . Cardiomediastinal silhouette is enlarged , but grossly unchanged . Mild prominence of the pulmonary arteries is similar to the prior study . There is upper zone redistribution , without overt CHF . There is a small to moderate size left pleural effusion , with underlying left lower lobe collapse and / or consolidation . The effusion appears larger and the consolidation more dense than on the prior study . Again seen is patchy opacity in the right cardiophrenic angle , essentially unchanged --___ differential diagnosis includes infection versus aspiration or early infiltrate . A small right effusion appears new .
    OUTPUT:
    
Upper zone redistribution , without overt CHF , similar to the prior study . Cardiomegaly , unchanged . Small to moderate left effusion and left lower lobe collapse and / or consolidation have increased . Patchy opacity in the right cardiophrenic region is is unchanged . Small right effusion appears new .