Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a right basilar opacity , some of which is attributed to moderate pleural effusion . The left lung is grossly clear without confluent consolidation , or effusion although there is mild pulmonary vascular congestion . The cardiac silhouette is enlarged but stable in configuration . Left chest wall dual lead pacing device is again noted . No acute osseous abnormalities .
    OUTPUT:
    
Pulmonary vascular congestion with new moderate right - sided pleural effusion with associated atelectasis , infection is not excluded .