Dysembryoplastic neuroepithelial tumor

Case contributed by Dr Muthu Magesh


1st episode of GTCS in a 20 year old female.

Patient Data

Age: 20
Gender: Female

A well demarcated cystic intracortical lesion in the left frontal lobe, following CSF in all sequence. The lesion has a soap bubble appearance with no surrounding edema. No enhancement noted on T1W images after administration of gadolinium. Few delicate septa like structures are visible within the lesion. No evidence of mass effect. There is evidence of scalloping of overlying frontal bone

Case Discussion

Dysembryoplastic neuroepithelial tumors are benign tumor (WHO grade 1). DNET are one of most common cause for seizures in children.

DNET are supratentorial and characterized by intracortical location, multinodular architecture, and heterogeneity in cellular composition 1,2.

Differentials to be considered:

  • ganglioglioma: contrast enhancement present with calcification
  • pleomorphic xanthoastrocytoma: contrast enhancement with dural tail sign

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