Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is not enlarged . The aorta is unfolded and slightly tortuous . There is possible background hyperinflation , with flattened diaphragms . No CHF , focal infiltrate , or effusion is identified . No pneumothorax is detected . Surgical clips noted in the right upper quadrant .
    OUTPUT:
    
No acute pulmonary process identified .