Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest demonstrate hyperexpansion of the lungs and relative flattening of the bilateral hemidiaphragms , consistent with emphysema . The cardiomediastinal silhouette is stable . There is no evidence of pulmonary edema , pleural effusion or focal consolidation concerning for pneumonia . Multilevel degenerative changes are present in the thoracic spine . Bilateral nipple shadows should not be confused for pulmonary nodules .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Emphysema .