Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . The lungs appear lucent suggesting emphysema . There is mild elevation of the left hemidiaphragm which is unchanged . No convincing signs of pneumonia , edema . No pleural effusion or pneumothorax . The aorta is unfolded . Heart size appears normal . Bony structures are intact .
    OUTPUT:
    
No acute findings .