Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Lung volumes are markedly low which limits the assessment through the lower lungs . Allowing for this , there is no overt evidence of pneumonia , CHF , effusion or pneumothorax . Bronchovascular crowding in the lower lungs limits assessment . Heart size can not be assessed . Mediastinal contour appears normal . No acute bony injuries .
    OUTPUT:
    
Limited , negative .