Does radiotherapy treat glioblastoma?

Glioblastoma can extend into nearby brain tissue, so surgery may not remove every tumour cell. Radiotherapy uses carefully planned high-energy beams to treat the area at risk after surgery or, in some situations, to manage a tumour that cannot be removed. It may be combined with medicines chosen by the oncology team. The exact approach depends on the tumour’s location, its features, previous treatment, and how well the person is recovering.

Treatment planning may include brain imaging and a fitting appointment so the head stays in a steady position. The radiation team maps the target and limits exposure to nearby healthy tissue as far as practical. Possible effects include tiredness, scalp irritation, hair loss in the treated area, headache, or changes in concentration; the team explains what to watch for.

Ask the neuro-oncology team how radiotherapy fits with surgery and medicines, when it would start, and what preparation is needed. Bring a list of medicines, supplements, previous scans, and symptoms. Keep appointments for planning and monitoring, and report new or worsening problems so supportive treatment can be considered. Do not stop prescribed medicine without speaking with the treating team.

Contact the treatment team promptly for worsening headaches, repeated vomiting, a new seizure, increasing weakness, confusion, unusual sleepiness, or a sudden change in speech, vision, or balance. A seizure that lasts longer than usual, trouble breathing, or inability to wake the person needs emergency help.

Which brain area will be treated, and what is the goal? How will radiotherapy fit around surgery or medicines? Which side effects should be reported the same day? What support is available for fatigue, seizures, memory, or movement changes?