For patients facing a diagnosis of glioblastoma -- one of the most aggressive and devastating forms of brain cancer -- the standard path forward has long meant an invasive open-skull surgery and a daunting prognosis. Over the past decade and a half, neurosurgeons have incorporated another treatment approach: a minimally invasive laser treatment -- currently offered to patients with recurrent, difficult-to-access, or inoperable brain tumors -- that is safe and extends survival by months, a meaningful milestone for people with a terminal diagnosis.