Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-erect chest radiograph ___ at 04 :36 is submitted .
    OUTPUT:
    
Nasogastric tube , endotracheal tube and right internal jugular central line unchanged in position . Overall cardiac mediastinal contours are stable given differences in patient positioning . Bilateral parenchymal opacities with a more consolidative appearance at the left base are likely not significantly changed given differences in technique between studies and are consistent with reported NSIP . Pneumonia or aspiration at the left base can not be excluded . There is residual right chest wall subcutaneous emphysema . No obvious pneumothorax .