[논문]Atypical Extraventricular Neurocytoma

Choi, Hyun-Ho; Park, Sung-Hye; Kim, Dong-Gyu; Paek, Sun-Ha

doi:10.3340/jkns.2011.50.4.381

[국내논문] Atypical Extraventricular Neurocytoma 원문보기

Journal of Korean Neurosurgical Society = 대한신경외과학회지, v.50 no.4, 2011년, pp.381 - 384

Choi, Hyun-Ho (Department of Neurosurgery, Cancer Research Institute, Ischemic) , Park, Sung-Hye (Department of Pathology, Cancer Research Institute, Ischemic) , Kim, Dong-Gyu (Department of Neurosurgery, Cancer Research Institute, Ischemic) , Paek, Sun-Ha (Department of Neurosurgery, Cancer Research Institute, Ischemic)

Abstract ▼ AI-Helper

The authors report a case of atypical extraventricular neurocytoma (EVN) transformed from EVN which had been initially diagnosed as an oligodendroglioma 15 years ago. An 8-year-old boy underwent a surgical resection for a right frontal mass which was initially diagnosed as oligodendroglioma. When the tumor recurred 15 years later, a secondary operation was performed, followed by salvage gamma knife treatment. The recurrent tumor was diagnosed as an atypical EVN. The initial specimen was reviewed and immunohistochemistry revealed a strong positivity for synaptophysin. The diagnosis of the initial tumor was revised as an EVN. The patient maintained a stable disease state for 15 years after the first operation, and was followed up for one year without any complications or disease progression after the second operation. We diagnosed an atypical extraventricular neurocytoma transformed from EVN which had been initially diagnosed as an oligodendroglioma 15 years earlier. We emphasize that EVN should be included in the differential diagnosis of oligodendroglioma.

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가설 설정

1. A : Preoperative T2-weighted image from the surgical specimen at the first operation demonstrates heterogeneous signal intensity in a right frontal mass. B : Contrast-enhanced T1-weighted image shows subtle peripheral enhancement 13 years after the first operation.
B : Immunostaining for synaptophysin demonstrates a strong positivity in the specimen taken at the first operation (Magnification; ×400, synaptophysin immunochemical stain).

제안 방법

He was discharged from the hospital without neurologic deficits or additional treatment. The patient was followed yearly with brain MR imaging. During the follow up periods, the mass had showed no specific changes and the patient had done well without any neurologic deterioration.

성능/효과

C : T2-weighted image taken 15 years after the first operation demonstrates high signal intensity mass lesion in the right frontal lobe. D : Contrast-enhanced T1-weighted image taken 15 years after the first operation shows marked enhancement. E : 18F-FDG brain positron emission tomography shows a hypermetabolic lesion in the right inferior frontal lobe.
The MR images taken 15 years after the initial surgery showed a solid enhancing lesion of high signal intensity on T2-weighted MR images and low signal intensity on T1-weighted MR images in the right frontal area. The new lesion was thought to be a recurrent tumor with malignant transformation (Fig.

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[국내논문] Atypical Extraventricular Neurocytoma 원문보기

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[국내논문] Atypical Extraventricular Neurocytoma 원문보기

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