Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are well inflated with bilaterally flattened hemidiaphragms and emphysematous changes as seen on previous CT study . No areas of focal consolidation suspicious for infection . There are no lesions or masses identified . There is no pleural effusion or pneumothorax . The aorta is mildly tortuous . Otherwise , the cardiomediastinal and hilar silhouettes are within normal limits . The pleural surfaces are unremarkable . There are multilevel degenerative changes seen along the thoracic spine .
    OUTPUT:
    
No evidence of heart failure , infection or malignancy .