Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no significant interval change compared to the prior CXR performed yesterday morning . A spinal fusion device is noted in the cervical cord . The support lines and devices are unchanged in position . There is questionable patchy opacification of the left mid-lung zone , which may represent aspiration in the appropriate clinical setting . There is no substantial pleural effusion , and no evidence of pneumothorax . Cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
Subtle patchy opacification of the left mid-lung , which may represent aspiration in the appropriate clinical setting .