Michael Bolton is facing a health setback in the new year. In a message to fans on Friday, the singer revealed that he was recently diagnosed with a brain tumor and will be taking a break from the stage. "Just before the holidays, it was discovered that I had a brain tumor, which required immediate surgery. Thanks to my incredible medical team, the surgery was a success," the singer wrote on Facebook. "I am now recuperating at home and surrounded by the tremendous love and support of my family."