Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: 2 views were obtained of the chest . The lungs are mildly hyperexpanded but clear . Postsurgical changes are seen in the right upper hemithorax from prior lobectomy with resultant volume loss . Mild hyperinflation and leftward shift of the cardiomediastinum -- ___ some extent a function of mild thoracic scoliosis -- ___ chronic . There is no pleural effusion or pneumothorax . The heart is normal in size with dual lead pacemaker defibrillator noted in conventional position .
    OUTPUT:
    
No acute intrathoracic process .