Glioblastoma NOS


Typical appearances of a large glioblastoma (GBM) 

The patient went on to have a craniotomy which confirmed the diagnosis of a WHO grade IV astrocytoma (glioblastoma). 

Note: IDH mutation status is not provided in this case and according to the current (2016) WHO classification of CNS tumors, this tumor would, therefore, be designated as a glioblastoma NOS