Dysembryoplastic Neuroepithelial Tumor

2022 ◽  
pp. 243-246
Author(s):  
John M. Stern ◽  
Noriko Salamon
Keyword(s):  
Dysembryoplastic Neuroepithelial Tumor

Dysembryoplastic Neuroepithelial Tumor: MR Imaging Findings

1996 ◽  
Vol 35 (3) ◽  
pp. 293
Author(s):  
Jeong Yeon Cho ◽  
Dong Gyu Na ◽  
Hong Sik Byun ◽  
Hong Dae Kim ◽  
Seong Whi Cho ◽  
...  
Keyword(s):  
Mr Imaging ◽  
Dysembryoplastic Neuroepithelial Tumor ◽  
Imaging Findings

Surgical Strategy and Outcomes for Epileptic Patients with Focal Cortical Dysplasia or Dysembryoplastic Neuroepithelial Tumor

Epilepsia ◽  
2001 ◽  
Vol 42 (s6) ◽  
pp. 37-41 ◽  
Author(s):  
Shigeki Kameyama ◽  
Masafumi Fukuda ◽  
Masaru Tomikawa ◽  
Nobuhito Morota ◽  
Makoto Oishi ◽  
...  
Keyword(s):  
Focal Cortical Dysplasia ◽  
Cortical Dysplasia ◽  
Surgical Strategy ◽  
Dysembryoplastic Neuroepithelial Tumor ◽  
Epileptic Patients

scholarly journals Surgical Strategy and Outcomes for Epileptic Patients with Focal Cortical Dysplasia or Dysembryoplastic Neuroepithelial Tumor

Epilepsia ◽  
2008 ◽  
Vol 42 ◽  
pp. 37-41 ◽  
Author(s):  
Shigeki Kameyama ◽  
Masafumi Fukuda ◽  
Masaru Tomikawa ◽  
Nobuhito Morota ◽  
Makoto Oishi ◽  
...  
Keyword(s):  
Focal Cortical Dysplasia ◽  
Cortical Dysplasia ◽  
Surgical Strategy ◽  
Dysembryoplastic Neuroepithelial Tumor ◽  
Epileptic Patients

Malignant transformation of a dysembryoplastic neuroepithelial tumor

2000 ◽  
Vol 92 (4) ◽  
pp. 722-725 ◽  
Author(s):  
Robert R. Hammond ◽  
Neil Duggal ◽  
John M. J. Woulfe ◽  
John P. Girvin
Keyword(s):  
Malignant Transformation ◽  
Complex Form ◽  
Ct Scanning ◽  
Subtotal Resection ◽  
Dysembryoplastic Neuroepithelial Tumor ◽  
Content Type ◽  
Recent Onset ◽  
Fibrillary Astrocytoma ◽  
Fine Print ◽  
Glial Nodules

✓ A 29-year-old man presented in 1984 with a recent onset of partial seizures marked by speech arrest. Electroencephalography identified a left frontotemporal dysrhythmia. Computerized tomography (CT) scanning revealed a superficial hypodense nonenhancing lesion in the midleft frontal convexity, with some remodeling of the overlying skull. The patient was transferred to the London Health Sciences Centre for subtotal resection of what was diagnosed as a “fibrillary astrocytoma (microcystic).” He received no chemotherapy or radiation therapy and remained well for 11 years.The patient presented again in late 1995 with progressive seizure activity. Both CT and magnetic resonance imaging demonstrated a recurrent enhancing partly cystic lesion. A Grade IV astrocytoma was resected, and within the malignant tumor was a superficial area reminiscent of a dysembryoplastic neuroepithelial tumor (DNT). Data on the lesion that had been resected in 1984 were reviewed, and in retrospect the lesion was identified as a DNT of the complex form. It was bordered by cortical dysplasia and contained glial nodules, in addition to the specific glioneuronal element. The glial nodules were significant for moderate pleomorphism and rare mitotic figures. The Ki67 labeling index averaged 0.3% in the glial nodules and up to 4% focally. Cells were rarely Ki67 positive within the glioneuronal component. This case is the first documented example of malignant transformation of a DNT. It serves as a warning of the potential for malignant transformation in this entity, which has been traditionally accepted as benign. This warning may be especially warranted when confronted with complex forms of DNT. The completeness of resection in the benign state is of paramount importance.

Intraventricular dysembryoplastic neuroepithelial tumor in a pediatric patient: is it the most common extracortical location for DNT?

2010 ◽  
Vol 27 (3) ◽  
pp. 485-490 ◽  
Author(s):  
Ji Yuan ◽  
Nirupma Sharma ◽  
Haroon Choudhri ◽  
Ramon Figueroa ◽  
Suash Sharma
Keyword(s):  
Pediatric Patient ◽  
Dysembryoplastic Neuroepithelial Tumor

scholarly journals Dysembryoplastic neuroepithelial tumor and oligodendroglioma: the diagnostic value of magnetic resonance spectroscopy

1998 ◽  
Vol 4 (4) ◽  
pp. E8 ◽  
Author(s):  
Eric W. Sherburn ◽  
Mark M. Bahn ◽  
Murat Gokden ◽  
Daniel L. Silbergeld ◽  
Keith M. Rich
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Resonance Spectroscopy ◽  
Treatment Options ◽  
Diagnostic Value ◽  
Low Grade Glioma ◽  
Resonance Spectroscopy ◽  
Dysembryoplastic Neuroepithelial Tumor ◽  
Low Grade ◽  
Radiological Findings ◽  
Similar Treatment

Preoperative differentiation between dysembryoplastic neuroepithelial tumor (DNT) and low-grade glioma is often not possible. Dysembryoplastic neuroepithelial tumor is a recently described entity of uncertain origin; however, the diagnosis has important clinical implications. Clinical and radiological findings of DNT and low-grade glioma, especially oligodendroglioma, may be similar. Treatment options and prognosis differ significantly between these two lesions; consequently, accurate diagnosis is imperative. The authors describe two individuals who presented simultaneously at their institution: one patient with an oligodendroglioma and a second patient with DNT. The natural history, neurodiagnostic, and pathological features of each are reviewed with special emphasis on the potential utility of magnetic resonance spectroscopy in differentiating these lesions.

Remitted epilepsy with dysembryoplastic neuroepithelial tumor involving the thalamus

2016 ◽  
Vol 58 (6) ◽  
pp. 496-500 ◽  
Author(s):  
Noriko Nishikura ◽  
Tomoyuki Takano ◽  
Fukiko Ryujin ◽  
Seiichiro Yoshioka ◽  
Yoshihiro Maruo ◽  
...  
Keyword(s):  
Dysembryoplastic Neuroepithelial Tumor

RAPIDLY GROWING DYSEMBRYOPLASTIC NEUROEPITHELIAL TUMOR

Neurosurgery ◽  
2006 ◽  
Vol 59 (6) ◽  
pp. E1337-E1338 ◽  
Author(s):  
Oltea Sampetrean ◽  
Taketoshi Maehara ◽  
Nobutaka Arai ◽  
Tetsuo Nemoto
Keyword(s):  
Complex Form ◽  
Interesting Case ◽  
Labeling Index ◽  
Pathological Examination ◽  
Dysembryoplastic Neuroepithelial Tumor ◽  
Complex Partial Seizures ◽  
Ki 67 ◽  
The Past ◽  
Short Period ◽  
Postoperative Diagnosis

Abstract OBJECTIVE During the past 15 years, the concept of dysembryoplastic neuroepithelial tumors has continued to evolve. We present an interesting case of dysembryoplastic neuroepithelial tumor that showed rapid growth during a short period of time. CLINICAL PRESENTATION A 9-year-old boy had been experiencing intractable complex partial seizures since the age of 7 years. Magnetic resonance imaging scans demonstrated a well-demarcated 3.5-cm lesion with a 1.5-cm ring-enhanced core in the left temporal lobe. One month later, the lesion had rapidly grown to occupy three times more space than on the first evaluation, with the ring-enhanced core reaching approximately five times its initial volume. INTERVENTION A combined tumor removal and epileptogenic focus resection surgery was performed immediately. In the pathological examination, the presence of the specific glioneuronal element with a Ki-67 labeling index of lower than 1%, as well as the glial component with a Ki-67 labeling index of 8%, led to a postoperative diagnosis of dysembryoplastic neuroepithelial tumor, complex form. No adjuvant therapy was performed. Five years after surgery, there is no evidence of any recurrence and the boy continues to be seizure free without antiepileptic drugs. CONCLUSION The lesion did not behave as a stable benign entity as it is generally accepted, and is, therefore, presented as an argument in favor of an early and complete resection.

Dysembryoplastic neuroepithelial tumor: Radiologic-pathologic correlation

1995 ◽  
Vol 2 (12) ◽  
pp. 1161
Author(s):  
Toshiro Kuroiwa ◽  
G.K. Bergey ◽  
M.I. Rothman ◽  
G.H. Zoarski ◽  
M.T. Zadardo ◽  
...  
Keyword(s):  
Dysembryoplastic Neuroepithelial Tumor ◽  
Pathologic Correlation
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