? The talented and tenacious 50 year old singer has a benign brain tumor, and revealed her story in an interview with the Las Vegas Review-Journal. "I haven't really talked about it," she said. "In November, I found out I have a brain tumor. But it's benign, so I don't have to worry about it. But it gives me a fit." In spite of this major- but currently harmless- development, Sheryl ...