Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Tracheostomy tube and right - sided central venous catheter are stable in position . There is moderate to large right pleural effusion . Suspected left - sided pleural effusion is also noted . Confluent bilateral parenchymal opacities have not dramatically changed since prior . Cardiomediastinal silhouette is grossly unchanged .
    OUTPUT:
    
Persistent bilateral pleural effusions and confluent parenchymal opacities , similar compared to recent exam .