MR findings of Dysembryoplastic Neuroepithelial Tumor
Journal of the Korean Radiological Society
;
: 403-407, 1997.
Article
in Korean
| WPRIM
| ID: wpr-87729
ABSTRACT
PURPOSE:
Dysembryoplastic neuroepithelial tumor (DNET) is a newly described, pathologically benign tumor arising within the supratentorial cortex. We reviewed the MR appearance of five patients with DNET, emphasizing the clinical and radiologic features. MATERIALS ANDMETHODS:
MR images in the five patients (three male and two female) with a history of epileptic seizure and pathologically-proven DNET were retrospectively reviewed. We analyzed the location, configuration, signal intensity, contrast enhancement, vasogenic edema and calcifications of these tomors.RESULTS:
The tumors were located mainly in the cortical to subcortical area with very little perifocal mass effect on MR imaging. They were essentially hypointense on T1-weighted imaging, and showed a hyperintense well circumscribed mass on T2-weighted imaging and a thick gyrus-like configuration was retained within the lesions. On contrast enhanced study, focal nodular enhancement was seen in one patient, and multifocal nodular enhancement in two.CONCLUSION:
DNET is rare benign tumor resulting in often medically intractable epileptic seizure and shows a characteristic gyriform configuration, well-described lobular tumor margins and sometimes multifocal nodular enhancement. These radiologic features may aid in differentiating DNET from ganglioglioma and other gliomas.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Magnetic Resonance Imaging
/
Retrospective Studies
/
Neoplasms, Neuroepithelial
/
Ganglioglioma
/
Edema
/
Epilepsy
/
Glioma
Type of study:
Diagnostic study
/
Observational study
Limits:
Humans
/
Male
Language:
Korean
Journal:
Journal of the Korean Radiological Society
Year:
1997
Type:
Article
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