Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Search research articles

Related Experiment Video

Updated: May 26, 2026

Surgical Treatment of an Endolymphatic Sac Tumor

Surgical Treatment of an Endolymphatic Sac Tumor

Published on: May 26, 2023

Atypical extraventricular neurocytoma.

Hyunho Choi¹, Sung-Hye Park, Dong Gyu Kim

¹Department of Neurosurgery, Cancer Research Institute, Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul, Korea.

Journal of Korean Neurosurgical Society

|December 27, 2011

Summary

Extraventricular neurocytoma (EVN) can transform into an atypical form over 15 years, initially misdiagnosed as oligodendroglioma. This case highlights the importance of considering EVN in differential diagnoses for similar brain tumors.

Related Concept Videos

Aneurysm II: Clinical Manifestations and Diagnostic Studies

Aneurysm II: Clinical Manifestations and Diagnostic Studies

Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Tacrolimus Levels 10 Years After Kidney Transplant and Long-Term Clinical Outcomes: A Propensity Score-Matched Analysis.

Experimental and clinical transplantation : official journal of the Middle East Society for Organ Transplantation·2026

Same author

Single-Fraction Stereotactic Radiosurgery for Benign Perioptic Meningiomas: A Strategy for Long-Term Tumor Control and Radiation-Induced Optic Neuropathy Avoidance With a 10-Year Follow-up.

Journal of Korean medical science·2026

Same author

Resolution Comparison of a Standoff Gel Pad Versus a Liquid Gel Barrier for Nasal Bone Fracture Sonography: A Standardized Crossover Study.

Diagnostics (Basel, Switzerland)·2026

Same author

The Usefulness of DEPAP Flaps for Reconstructing Perineal Defects Caused by Fournier's Gangrene: A Case Report.

Journal of clinical medicine·2025

Same author

Verrucous Carcinoma of the Lower Lip: A Rare Case Mimicking Benign Lesion.

Journal of clinical medicine·2025

Same author

Fractionated Gamma Knife Radiosurgery as a Primary Treatment for Large Brain Metastases.

Journal of Korean medical science·2025

Area of Science:

Neuro-oncology
Pediatric Neurosurgery
Pathology

Background:

Extraventricular neurocytoma (EVN) is a rare tumor, often challenging to diagnose.
Distinguishing EVN from other glial tumors like oligodendroglioma is critical for appropriate treatment and prognosis.

Observation:

A case is presented of a child initially diagnosed with oligodendroglioma at age 8.
The tumor recurred 15 years later, and the recurrent mass was diagnosed as atypical EVN.
Review of the initial specimen with immunohistochemistry confirmed the original diagnosis as EVN.

Findings:

The study identified a rare case of EVN transforming into an atypical EVN over a 15-year period.
Immunohistochemistry, specifically synaptophysin staining, was crucial in revising the initial diagnosis.

Keywords:

Atypical extraventricular neurocytoma Differential diagnosis Oligodendroglioma Recurrence

More Related Videos

Role of Diffusion MRI Tractography in Endoscopic Endonasal Skull Base Surgery

Role of Diffusion MRI Tractography in Endoscopic Endonasal Skull Base Surgery

Published on: July 5, 2021

Related Experiment Videos

Last Updated: May 26, 2026

Surgical Treatment of an Endolymphatic Sac Tumor

Surgical Treatment of an Endolymphatic Sac Tumor

Published on: May 26, 2023

Role of Diffusion MRI Tractography in Endoscopic Endonasal Skull Base Surgery

Role of Diffusion MRI Tractography in Endoscopic Endonasal Skull Base Surgery

Published on: July 5, 2021

The patient achieved long-term stability after surgical resection and gamma knife treatment.

Implications:

This case underscores the necessity of including EVN in the differential diagnosis for tumors initially presenting as oligodendroglioma.
Long-term follow-up and careful pathological review are essential for accurate diagnosis and management of rare neuro-oncological entities.
Understanding the potential for tumor transformation in EVN can inform future treatment strategies and prognostic assessments.