Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: a dual lead pacemaker is present with leads projecting over the expected locations . There is diffuse opacity projecting over the right chest that likely represents a pleural effusion layering posteriorly . There is complete obscuration of the right hemidiaphragm suggesting infiltrate / volume loss as well . alveolar infiltrate right greater than left are visualized bilaterally . The heart is moderately enlarged . There is a probable small left effusion .
    OUTPUT:
    
The findings are likely due to CHF , however an infectious etiology can not be excluded .