Loading Stack -
0 images remaining
There is a irregular intra-axial lesion with ill defined border locate on right parietal lobe. The lesion is heterogeneous in nature & showing low T1 signal with high T2 signal. The lesion is not enhanced by the contrast.
The is no diffuse restriction on DWI signal. There is a increase signal on ADC suggestive of previous infarction.
There is no evidence of oedema nor mass effect.
2 case question available
The patient went on to have biopsy of the tumour
Microscopic Description: Sections show small pieces of brain tissue infiltrated by a moderately cellular glial tumour displaying oligodendroglial characteristics. Histologic features associated with high-grade, such as tumour necrosis, vascular neogenesis, or elevated mitotic activity, are not seen, although these fragments are very small.
Final Diagnosis: Oligodendroglioma.
Note: This case predates the recent (2016) revision WHO classification of CNS tumours, and thus molecular markers (IDH mutation and 1p19q co-deletion) are not available. As such, this tumour would now be classified as an oligodendroglioma NOS.