Oligoastrocytoma NOS

Case contributed by A.Prof Frank Gaillard
Modality: CT

A large haemorrhagic heterogeneously enhancing mass in the right temporal lobe is present with significant mass effect. 

Case Discussion

Oligoastrocytoma (NOS) - histologically proven.

NOTE: This case predates the 2016 WHO classification of CNS tumour revision. As no 1p19q co-deletion status is available a formal diagnosis cannot be reached and the NOS is therefore used (not otherwise specified) - which is recognised in the current classification for cases where molecular information is unavailable. It should also be noted, that under the new classification both an astrocytic and oligodendroglial component needs to be identified, each with its own molecular markers. True oligoastrocytomas are therefore going to be rare, and this case would most likely be classified as either an astrocytoma or an oligodendroglioma. 

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Case Information

rID: 9923
Case created: 31st May 2010
Last edited: 1st Apr 2017
Inclusion in quiz mode: Included

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