Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portable supine frontal chest radiograph demonstrates a left pectoral cardiac device with multiple leads in place . A right abandoned lead is noted . The inspiratory lung volumes are low . Retrocardiac opacification may reflect a combination of pleural effusion with associated atelectasis but underlying consolidation can not be excluded . The right lung shows no pleural effusion or focal consolidation . No pneumothorax is detected . The cardiac silhouette is massively enlarged . The mediastinal and hilar contours are incompletely assessed in the setting of low lung volumes and massive cardiomegaly . There is calcification at the aortic knob .
    OUTPUT:
    
1 . Retrocardiac opacification may represent a combination of pleural effusion and atelectasis . Underlying consolidation can not be excluded in the appropriate clinical setting . 2 . Massive cardiomegaly of uncertain chronicity .