Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Lung volumes are low . Overlying EKG leads are present . Heart size can not be reliably assessed given low lung volumes . There is no convincing evidence for pneumonia or edema . No large effusion or pneumothorax is seen . The mediastinal contour is unchanged . Bony structures are intact .
    OUTPUT:
    
No acute findings on this limited chest radiograph .