Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Bilateral pleural effusions are small . There is bibasilar opacity which is concerning for atelectasis though difficult to exclude aspiration or pneumonia . There is hilar engorgement with mild pulmonary edema . Heart size can not be assessed . Mediastinal contour appears stable . Bony structures are intact .
    OUTPUT:
    
Findings consistent with decompensated congestive heart failure , with small bilateral effusions . Difficult to exclude a superimposed pneumonia at the lung bases .