Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal view of the chest demonstrates a left pectoral cardiac pacer / AICD with leads terminating in the right atrium and right ventricle . An enteric tube extends inferiorly below the diaphragm and out of view . The cardiomediastinal silhouette is prominent , likely accentuated by semi-upright position and AP technique . Since one day ago , there is some improvement of right lower lobe aeration , although there is persistent multifocal pneumonia in bilateral lungs . Cavitary pneumonia in the right upper lobe is unchanged . There is no pneumothorax or large effusion on the left .
    OUTPUT:
    
Mild improvement of right lower lobe aeration .