He also underwent another brain surgery in January 2024. In the interview published April 30, Bolton said he finished radiation and chemotherapy in October and his most recent scan was clear in early April.

Michael Bolton has glioblastoma, a treatment-resistant and incurable cancer. The revelation comes 16 months after he had emergency surgery to remove a brain tumor.

Michael Bolton is sharing new details about a somber health diagnosis he’s been navigating over the last year and a half.In a new interview with People, the singer revealed that he has glioblastoma, a form of brain cancer that the Cleveland Clinic defines as the “most common type of malignant (cancerous) brain tumor in adults.