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Dysembryoplastic Neuroepithelial Tumor (DNET)

Last Updated: October 1, 2018

Figure 1: The DNET in this patient's lateral right temporal lobe is visible as involving the cortex and white matter. There is typical bubbly cystic change throughout the lesion visible on T2WI and FLAIR (top row left, top row right). The lesion is fairly circumscribed and demonstrates adjacent cortical thickening/dysplasia. Low signal intensity facilitated diffusion on DWI (bottom row left) indicates a very low-cellularity watery tumor. No enhancement is present on T1WI post contrast image (bottom row right).

 

Figure 2: This DNET demonstrates bright T2 signal intensity (top row left) that partially suppresses on FLAIR (top row right), implying a watery tumor. The lesion is very superficial, involving cortex and white matter. The typical bubbly cystic changes are absent in this lesi...