Oligodendroglioma NOS

Case contributed by Frank Gaillard
Diagnosis almost certain

Presentation

Seizure.

Patient Data

Age: 25 years
Gender: Male

MRI brain

mri

A mass with high T2 signal, and little if any contrast enhancement expands the right superior frontal gyrus. It prominently involves the cortex. 

Case Discussion

This patient went on to have surgery which confirmed the histological diagnosis of oligodendroglioma. 

Note: This case predates the recent (2016) revision WHO classification of CNS tumors, and thus molecular markers (IDH mutation and 1p19q co-deletion) are not available. As such, this tumor would now be classified as an oligodendroglioma NOS.

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