has a benign brain tumor, the singer revealed in a new interview.
"I worried about my memory so much that I went and got an MRI. And I found out I have a brain tumor," Crow tells the Las Vegas Review Journal
"I haven't really talked about it," she adds. "In November, I found out I have a brain tumor. But it's benign, so I don't have to worry about it."
The singer's rep says that the Grammy winner, 50, is healthy and happy. The tumor is a meningioma, which is typically benign and develops from the brain and spinal cord linings. It should not require surgery.
Crow, who has two young sons
, says she recently forgot some of the words to her song "Soak Up the Sun" while performing in Florida. "I'm 50, what can I say? My brain's gone to [expletive]," she cracked at the time.
Crow battled breast cancer in 2006. "I think it was a great release for me, just going through the experience," she told PEOPLE that year
"It's what you do with the experience that really defines who you become … I let go of a lot of the pressure I used to put on myself."