Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest are provided . Lung volumes are markedly low , which limits the evaluation . Allowing for this , no gross consolidation , effusion , or pneumothorax is seen . The heart size can not be assessed . Mediastinal contour appears stable . Bony structures are intact .
    OUTPUT:
    
Markedly limited exam due to low lung volumes . No overt pathology .