Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is an unchanged left - sided AICD with leads in the right atrium and right ventricle . The cardiac silhouette is unchanged and mildly enlarged with a mildly tortuous aorta . There is a silhouette sign of the descending aorta , consistent with either volume loss or consolidation , both of which have been described in DRESS . No pneumothorax is identified .
    OUTPUT:
    
1 . Silhouette sign of the descending aorta , consistent with either volume loss or consolidation , both of which have been described in DRESS ( see ___ et al . , Eosinophilic Lung Diseases . Radiographics ___ ; 27 : 617-___ ) .