Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear bilaterally with no areas of focal consolidation , pleural effusion , mass lesion , or evidence of pneumothorax . Cardiomediastinal silhouette is stable with mildly tortuous aorta . There is a prominent left pulmonary artery observed ; however , this is unchanged when compared to chest radiograph of ___ . Mild degenerative changes of the thoracic spine are seen with stable wedge deformity seen in the lower thoracic spine vertebra .
    OUTPUT:
    
No evidence of infection or malignancy .