Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are well inflated and clear bilaterally . There is no pleural effusion , masses , lesions , or pneumothorax . The aorta is mildly tortuous . The cardiac silhouette is normal . Pleural surfaces are unremarkable . Pulmonary architecture is grossly normal . There is mild multilevel degenerative changes of the thoracic spine .
    OUTPUT:
    
No evidence of infection , malignancy , lung disease or heart failure .