Scientists have discovered a brain cancer breakthrough after finding a "window" to attack tumours after surgery. TRENDING Stories Videos Your SayGlioblastoma is one of the deadliest forms of brain cancer | GETTY The findings, though still at a preliminary stage, could fundamentally alter how clinicians approach the treatment of the deadliest form of brain cancer. Professor Robert Bristow, director of the Manchester Cancer Research Centre, described the results as "incredibly exciting", calling them a potential breakthrough in preventing tumour regrowth. Dr Simon Newman, chief scientific officer at The Brain Tumour Charity, stressed the importance of moving from laboratory findings to clinical trials. Glioblastoma is the most aggressive and rapidly progressing type of brain tumour.