BY Ronda Wendler / photo by Wyatt McSpadden

Glioblastomas, or malignant gliomas, are sometimes called “grow-and-go” tumors. They make their own blood supply, which fuels the tumors’ rapid growth and helps them hatch satellite tumors. Each tumor sends out tentacles that infiltrate and dig deep into normal brain tissue.

Without treatment, a glioblastoma tumor doubles in size every two to three weeks.

Neurosurgeons may seemingly remove the entire tumor, but hidden cancer...