Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is small to moderate left greater than right pleural effusions with adjacent atelectasis . Superiorly the lungs are clear of consolidation . Prosthetic mitral valve is noted . Heart is enlarged but not well evaluated due to silhouetting at the bases . Bilateral shoulder arthroplasties are noted .
    OUTPUT:
    
Small to moderate pleural effusions with pulmonary vascular congestion .