Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is moderately severe cardiomegaly , unchanged compared to the prior study . A dual lead pacemaker is unchanged in appearance . Lung volumes appear low on the right with right basilar atelectasis but no pleural effusion seen . No consolidation , pneumothorax or pulmonary edema seen
    OUTPUT:
    
No pleural effusion seen . Unchanged cardiomegaly .