John McCain Has Brain Cancer Staff | July 20, 2017 | Entertainment Daypop Tweet Share +1 Pinterest LinkedIn Email When getting surgery to remove a blood clot, it was revealed that John has a brain tumor. He is now resting at home from his surgery. John McCain Diagnosed with Brain Cancer Via www.tmz.com 07/19/2017 8:20 PM Editorial credit: ChameleonsEye / Shutterstock.com Previous Next