Glioma brain tumour. Sequence of magnetic resonance imaging (MRI) saggital scans showing the internal structure in the head of a 44-year-old woman with a high-grade glioma. The front of the head is at left in this view from the side, with the sequence moving through the head from right to left. A glioma is a tumour that arises from the supportive glial cells of the brain or spine. This tumour is located in the middle of the right frontal lobe, which is towards the front and top of the brain, at upper left in this view. The tumour appears briefly just before the middle of the clip, as a light grey mass at top centre. Symptoms reported by the patient included an increasing number of headaches and personality changes.