Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Overlying EKG leads noted . Lung volumes are low . Bronchovascular crowding is noted . Relative prominence of the hila may reflect hypoventilatory status . Mild hilar congestion is difficult to exclude . No large effusion . Mild left basal atelectasis . No large pneumothorax . Bony structures are intact . Cardiomediastinal silhouette unchanged .
    OUTPUT:
    
Probable mild congestion . No definite signs of pneumonia or edema .