Known as "black tumor," the cancer sends about 8,000 Americans to the grave each year — here's what you can do to avoid becoming one of them.

The family of Brandon Blackstock, Kelly Clarkson's ex-husband and the father of her two children, shared the tragic news that Blackstock has died at 48 from cancer.

Clarkson, the "American Idol" star who shared two children with Blackstock, had just announced she was stepping away from concerts to support her family.