Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable erect chest radiograph ___ at 23 :30 is submitted .
    OUTPUT:
    
Lungs appear well inflated without evidence of focal airspace consolidation to suggest pneumonia . No pulmonary edema , pleural effusions or pneumothorax . Overall cardiac and mediastinal contours are likely unchanged given differences in patient positioning between studies .