Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear and well inflated bilaterally with no focal consolidation , mass lesions , pleural effusion or evidence of pneumothorax . The cardiomediastinal silhouette is stable and within normal limits . The pleural surfaces are unremarkable . Posterior fusion hardware is seen in the upper thoracic vertebra with pedicle screws unchanged in position and with no obvious hardware complications . Metallic cage replacing the T3 vertebra is seen again with no obvious complications . Stable osteopenia and degenerative changes of thoracic spine is noted .
    OUTPUT:
    
No evidence of infection or malignancy .