Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well - expanded and clear . No focal consolidation , edema , effusion , or pneumothorax . The heart is normal in size . The mediastinum is not widened . Slight loss of anterior vertebral body height of a lower thoracic vertebral body is age indeterminate . Multilevel degenerative changes of thoracic spine are mild - to - moderate .
    OUTPUT:
    
1 . No focal pneumonia . 2 . Slight anterior loss of a lower thoracic vertebral body height , age indeterminate in the absence of prior exams but probably degenerative . Correlate with focal exam findings .