Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable single view chest x-ray in upright position shows normal volume with stable bilateral patchy opacities already characterized in chest CT of ___ as multifocal pneumonia . Minimal improvement of left lung base opacity is likely due to reduced atelectasis but stable small pleural effusion . Mild pulmonary edema and central vein distention has improved . There is no pneumothorax .
    OUTPUT:
    
Minimal improvement of pulmonary edema and central vein distention with stable bilateral multifocal opacity already characterized as multifocal pneumonia .