Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Lung volumes are low limiting assessment . The lungs are grossly clear . No large effusion or pneumothorax . Heart size is unchanged . The mediastinal contour is similar with an unfolded thoracic aorta . Bony structures are grossly intact .
    OUTPUT:
    
No acute findings , limited exam .