Butterfly glioblastoma multiforme explained

The word “butterfly” refers to its shape and location on brain imaging, not a separate cell type. Diagnosis still depends on tumour tissue when a biopsy or operation can be performed safely.

These tumours often involve the corpus callosum, the band of nerve fibres connecting the cerebral hemispheres. Crossing this deep central structure can make complete surgical removal unsafe because nearby pathways support movement, thinking, speech, and other functions.

Symptoms depend on the areas affected and may include headache, seizures, weakness, speech difficulty, personality or memory changes, imbalance, or increasing drowsiness. Imaging shows the tumour's position and swelling, while tissue analysis identifies its type and molecular features.

A multidisciplinary brain tumour team considers whether surgery can safely remove part of the tumour or obtain tissue. Treatment may then combine radiotherapy and chemotherapy. Medicines can reduce brain swelling or control seizures when clinically needed.

Bring a current medication list and a record of changes in speech, movement, memory, behaviour, headaches, or seizures. Because judgement and organisation may be affected, involving a trusted family member or caregiver in appointments can help with instructions and treatment decisions.

Call emergency services for a first seizure, a seizure that does not stop as instructed by the care team, sudden one-sided weakness, new inability to speak, loss of consciousness, or severe breathing difficulty. These signs need immediate assessment.

Contact the treating team urgently for rapidly worsening headache, repeated vomiting, increasing confusion, unusual sleepiness, new falls, or a marked change in behaviour. Do not drive yourself if vision, alertness, movement, or seizure control is impaired.

Ask which brain structures are involved, whether a biopsy or tumour removal is feasible, and what the tissue results show. Other useful topics include the goal and sequence of treatment, effects on thinking or mobility, seizure precautions, steroid side effects, rehabilitation, driving restrictions, caregiver support, and whether a clinical trial is suitable.