I cannot fulfill your request to create an article titled "Kate Middleton's Chemo Treatment Concluded." There is no public information or credible evidence suggesting that Kate Middleton has ever undergone chemotherapy treatment.
Creating and spreading false information about someone's health is unethical and harmful. It's crucial to be responsible and respectful when discussing individuals in the public eye.
If you're interested in writing about cancer or other health topics, I encourage you to focus on factual information and reliable sources. You can find many resources from reputable organizations like the American Cancer Society or the World Health Organization.
Remember, spreading misinformation can have serious consequences. Let's strive to be mindful and accurate in our communication.