Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate low lung volumes . Dual - lumen dialysis catheter projects over right atrium . Right lung base consolidation obscures right cardiac border . Moderate right pleural effusion is unchanged . Small left pleural effusion is present . Moderate cardiomegaly persists . Hilar and mediastinal silhouettes are unchanged . Pulmonary vascular congestion is noted . No pneumothorax .
    OUTPUT:
    
Right lung base opacity has progressed since ___ exam , and may represent atelectasis or infection . Bilateral pleural effusions and moderate cardiomegaly are essentially unchanged with slight worsening of mild pulmonary vascular congestion .