Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is moderate enlargement of the cardiac silhouette . There is no prior exam to evaluate for interval change . There are 2 abandoned cardiac leads identified without pacing device . There is retrocardiac opacity which silhouettes the hemidiaphragm . Elsewhere , the lungs are grossly clear without overt edema . There is no right - sided pleural effusion . No acute osseous abnormalities .
    OUTPUT:
    
Enlarged cardiac silhouette , potentially due to cardiomegaly and / or pericardial effusion . Retrocardiac opacity silhouetting the hemidiaphragm . This could be due to combination of underlying effusion and atelectasis , and / or possible infection .