Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable semi-erect frontal chest radiograph demonstrates mildly hypoinflated clear lungs . No pleural effusion or pneumothorax . Heart size , mediastinal contour , and hila are unremarkable . Persistent elevation of the left hemidiaphragm is present . Calcification of the aortic arch in is similar to previous examination . A tortuous aorta is present .
    OUTPUT:
    
1 . Hypoinflated clear lungs . No pneumonia . 2 . Persistent elevation of left hemidiaphragm .