Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low . There is mild cardiomegaly with engorgement of the pulmonary vasculature and mild interstitial edema . Hazy opacification at the left base could represent asymmetric edema , atelectasis , or underlying pneumonia . There is no pleural effusion or pneumothorax . There is stable rightward deviation of the trachea .
    OUTPUT:
    
1 . Mild CHF . 2 . Opacity at the left base may represent asymmetric edema , atelectasis , or underlying pneumonia .