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  • Title: [Dysembryoplastic neuroepithelial tumor; a case report].
    Author: Hasegawa H, Bitoh S, Koshino K, Obashi J, Kobayashi Y.
    Journal: No Shinkei Geka; 1991 Jun; 19(6):553-7. PubMed ID: 1652703.
    Abstract:
    The authors report a case of dysembryoplastic neuroepithelial tumor which is a new entity of glial tumor proposed by Daumas-Duport et al. A 16-year-old male was admitted to our hospital with a 5-year history of uncontrollable complex partial seizure. CT scan showed a non-enhanced homogeneous low density area without mass effect, simulating old infarction or porencephalic cyst in the right posterior temporal lobe. The inner table of the skull over the lesion was eroded. The lesion showed low signal intensity in T1 weighted MR image and high signal intensity in T2 image. Craniotomy disclosed greyish soft solid tumor without cyst. Histologically, the tumor contained multiple cellular nodules in the microcystic astrocytic part which contained neurons. After the surgery the patient was free from the seizure. Dysembryoplastic neuroepithelial tumor is found in young patients with intractable partial seizures. It is characterized by pseudocystic well-demarcated low density appearance on CT scan. Histologically, it is an intracortical multinodular heterogeneous tumor which, is surgically treatable with favorable prognosis. For differential diagnosis, this tumor must be recognized in the list of low-density intracranial lesions found during CT scan.
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