Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are well expanded and clear bilaterally . There is subtle blunting of the right costophrenic angle which may represent a small pleural effusion . Left subclavian catheter is seen in unchanged position terminating within the mid SVC . There is no pneumothorax . The cardiomediastinal silhouette is unchanged and within normal limits . The pleural surfaces are unremarkable . There is no pneumothorax .
    OUTPUT:
    
Stidy essentially unchanged . No evidence of failure or infection .