Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest is compared to previous exam from ___ . New compared to prior is more dense opacity at the left lung base , likely in part due to effusion with possible underlying atelectasis or consolidation . Pulmonary vascular congestion is again seen . Cardiac silhouette is enlarged but stable with triple - lead pacing device again noted .
    OUTPUT:
    
More dense opacity at the left lung base , silhouetting the hemidiaphragm likely in part due to pleural effusion with underlying consolidation not excluded . Pulmonary vascular congestion as on prior and cardiomegaly .