Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Blebs , interstitial abnormalities , and parenchymal opacities are related to patient 's severe emphysema . No acute process . Moderate cardiomegaly . The endotracheal tube terminates 2 .6 cm above the carina . The orogastric tube is within the stomach . There are calcifications in the aortic arch . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
1 . Endotracheal tube terminates 2 .6 cm above the carina and could be pulled back 1 cm for more optimal positioning . 2 . Severe emphysema . 3 . No acute cardiopulmonary process .