Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral images of the chest demonstrate hyperinflation of the lungs , which may be consistent with the patient 's body habitus or an emphysematous process . Rib resection of the posterior lateral aspect of the fourth rib on the right side is noted . The lungs are clear . There is no pneumothorax or pleural effusion . Cardiomediastinal silhouette is unremarkable . Visualized osseous structures are otherwise unremarkable .
    OUTPUT:
    
No evidence of acute thoracic process . Essentially normal chest radiograph .