Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest film ___ at 00 :09 is submitted
    OUTPUT:
    
Lungs remain clear . No focal airspace consolidation , pleural effusions , pulmonary edema or pneumothorax . Overall cardiac and mediastinal contours are stable with the heart being upper limits of normal in size . No acute bony abnormality .