Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-erect view of the chest demonstrates low lung volumes . Moderately large bilateral pleural effusions have progressed since prior . Diffuse airspace opacities have also progressed . Hilar and mediastinal silhouettes are difficult to discern due to adjacent opacities . Dobhoff tube is unchanged in position and is stationed at the level of the pylorus . Tracheostomy tube is unchanged in position .
    OUTPUT:
    
In comparison with ___ exam , there is interval progression of moderately large bilateral pleural effusions and diffuse bilateral opacities , which likely represents worsening edema , or overlying infection .