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 , masses , or lesions . The upper lobes demonstrate a paucity of vascular markings , and both diaphragms are mildly flattened ; findings are compatible with patient 's diagnosis of COPD . The cardiomediastinal silhouette is within normal limits , and pleural surfaces are unremarkable . Again seen is an anterior fusion plate seen in the cervical spine , unchanged in position relative to the prior , with no obvious hardware complications .
    OUTPUT:
    
No evidence of malignancy or infection .