Arrows in MRI images depict tumours before and after treatment. SUNNYBROOK HEALTH CENTRE
Doctors have demonstrated that medicines can be safely delivered directly to the brain of patients in a world-first treatment for cancer that requires breaking the blood-brain barrier.
This method temporarily makes blood vessels in a specific brain region porous to allow drug to flow out of the bloodstream to reach tumour cells.
This method was used to shrink the tumours of four women suffering from breast cancer. Four women with breast cancer that had spread to the brain have seen their tumours shrink using a drug called Herceptin.