"No one knows what technology will be available in five years, " said Allan Friedman, DukeUniversityHospital neurosurgeon in chief, who in 2011 removed as much of Leon's brain tumor as possible.
The immunotherapy method, which Nowak-Wegrzyn called a "big advancement in the field, " has also shown promise in a study by DukeUniversity Medical Center and Arkansas Children's Hospital.
Most would point to the three big Harvard hospitals, Hospital of the University of Pennsylvania, Johns Hopkins in Baltimore, and Duke running down the East Coast.