Gliobastoma multiforme

A Grade 4 astrocytoma is also called glioblastoma multiforme or GBM.  This is a high grade tumour which tends to grow and spread quite quickly.  It is the most common type of primary malignant brain tumour in adults, accounting for 52% of all primary brain tumour cases.

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www.cancerhelp.org.uk/help
www.cancerbackup.org.uk
www.patient.co.uk