Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Midline tracheostomy tube and right - sided PICC are re- demonstrated . There moderate bilateral pleural effusions , similar as compared to prior study . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Moderate bilateral pleural effusions and mild pulmonary vascular congestion . Superimposed infection is difficult to exclude .