Light-activated nanoparticles could help surgeons find and destroy brain cancer remnants

Glioblastoma is the most aggressive form of brain cancer. It's difficult to treat because tumor cells infiltrate the surrounding brain tissue, making it hard for surgeons to remove the cancer completely without damaging healthy tissue. Treatment is further complicated by the blood-brain barrier, which limits how well drugs and radiation therapy reach the brain. All these factors contribute to a five-year survival rate of only around 7%.