Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . ___ overlying EKG leads are present . Hazy opacity in the lower lungs may represent atelectasis , less likely pneumonia . No large effusion or pneumothorax . Cardiomediastinal silhouette is unchanged . Bony structures are intact .
    OUTPUT:
    
Hazy lower lung opacities likely atelectasis , difficult to exclude pneumonia .