J Korean Radiol Soc.  1995 Jun;32(6):981-984.

Dysembryoplastic Neuroepithelial Tumor: CT and MR Findings A Case Report

• Lee SW
• Choi HY
• Han YM
• Goo HS
• Kim MH

Abstract

Dysembryoplastic neuroepithelial tumor(DNET) is a recently described rare tumor that occurs most frequently in the temporal lobe of the brain and is characterized by long-standing, intractable complex partial seizures in children. The authors experienced one case of DNET occurring in a 13-year old boy, who had refractory complex partial seizure for 7 years. CT scan revealed nonenhancing low density mass in the left temporal lobe. MR images demonstrated a well-marginated cortical mass with very low signal intensity on TIWI and multinodular appearance of high signal intensity on T2WI. A few small enhancing foci within the mass were noted on contrast enhanced MR images. DNET, a rare tumor, should be considered in the differential diagnosis of neoplasm which causes seizure and is distinguished from other tumors because of its benign course. Differentiation between DN ETand other tumors by CT and MR findings is very difficult. But, our case showed the multinodular pattern on T2W image, which may be helpful feature in the differential diagnosis.

MeSH Terms

Adolescent
Brain
Child
Diagnosis, Differential
Humans
Male
Neoplasms, Neuroepithelial*
Seizures
Temporal Lobe
Tomography, X-Ray Computed