Dysembryoplastic neuroepithelial tumor

Case contributed by Fateme Hosseinabadi
Diagnosis possible

Presentation

Seizures.

Patient Data

Age: 15 years
Gender: Male

MRI demonstrating a cortical-based well-defined mass in the left temporal region with T2/FLAIR high signal intensity and T1-WI iso to low signal intensity without surrounding edema and with overlying bony remodeling. Incomplete T2/FLAIR hyperintense ring represents the bright rim sign.

Case Discussion

These imaging findings suggest a low grade left temporal lobe dysembryoplastic neuroepithelial tumor (DNET). Possibilities also include ganglioglioma or pleomorphic xanthoastrocytoma.

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