Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Upright view of the chest demonstrates mildly increased opacification of the previously seen left and right pneumonia and stable , moderate to large pleural effusions . The left subclavian line is unchanged in standard position . There is no pneumothorax . Cardiomediastinal borders are difficult to assess due to opacification of the lower left hemithorax .
    OUTPUT:
    
Mild worsening of severe bilateral pneumonia and stable moderate to large pleural effusions . No pneumothorax .