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Brain
Diagnosis
Pathology-Based Diagnoses
Neoplasms
Gliomas, Glioneuronal Tumors, and Neuronal Tumors
Glioneuronal and Neuronal Tumors
Neurocytoma, Extraventricular
Neurocytoma, Extraventricular
Karen L. Salzman, MD
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Pathology

          • Clinical Issues

            TERMINOLOGY

            • Abbreviations

              • Extraventricular neurocytoma (EVN)

            • Definitions

              • Neuroepithelial tumor located outside of ventricular system, commonly in brain parenchyma

            IMAGING

            • General Features

              • Imaging Recommendations

                • CT Findings

                  • MR Findings

                    DIFFERENTIAL DIAGNOSIS

                      PATHOLOGY

                      • General Features

                        • Staging, Grading, & Classification

                          • Gross Pathologic & Surgical Features

                            • Microscopic Features

                              CLINICAL ISSUES

                              • Presentation

                                • Demographics

                                  • Natural History & Prognosis

                                    • Treatment

                                      Selected References

                                      1. Romano N et al: Imaging of extraventricular neurocytoma: a systematic literature review. Radiol Med. ePub, 2020
                                      2. Romano N et al: Atypical extraventricular neurocytoma: imaging findings of disregarded diagnosis. World Neurosurg. 129:186-7, 2019
                                      3. Tish S et al: The epidemiology of central and extraventricular neurocytoma in the United States between 2006 and 2014. J Neurooncol. 143(1):123-7, 2019
                                      4. Jiang M et al: Imaging characteristics of cerebral extraventricular neurocytoma with pathological correlation. J Neurooncol. 140(2):289-96, 2018
                                      5. Xu L et al: A clinicopathologic study of extraventricular neurocytoma. J Neurooncol. 132(1):75-82, 2017
                                      6. Extraventricular neurocytoma. In Louis DN et al:  WHO Classification of Tumours of the Central Nervous System. IARC Press. 159-60, 2016
                                      7. Sweiss FB et al: Extraventricular neurocytomas. Neurosurg Clin N Am. 26(1):99-104, 2015
                                      8. Kawaji H et al: Extraventricular neurocytoma of the sellar region with spinal dissemination. Brain Tumor Pathol. 31(1):51-6, 2014
                                      9. Nabavizadeh SA et al: Extraventricular neurocytoma and ganglioneurocytoma: advanced MR imaging, histopathological, and chromosomal findings. J Neuroimaging. 24(6):613-6, 2014
                                      10. Huang WY et al: Computed tomography and magnetic resonance features of extraventricular neurocytoma: a study of eight cases. Clin Radiol. 68(4):e206-12, 2013
                                      11. Liu K et al: MR imaging of cerebral extraventricular neurocytoma: a report of 9 cases. AJNR Am J Neuroradiol. 34(3):541-6, 2013
                                      12. Myung JK et al: Clinicopathological and genetic characteristics of extraventricular neurocytomas. Neuropathology. 33(2):111-21, 2013
                                      13. Hawasli AH et al: Pontine extraventricular neurocytoma in a child. Pediatr Neurosurg. 48(5):319-23, 2012
                                      14. Aralasmak A et al: Nonenhancing hypovascular extraventricular neurocytoma. AJNR Am J Neuroradiol. 30(8):E117; author reply E118, 2009
                                      15. Gokhan GA et al: A case of extraventricular neurocytoma of the spinal cord. Neuropathology. 2008 Jun;28(3):322-5. Epub 2008 Jan 9. Erratum in: Neuropathology. 29(2):208, 2009
                                      16. Mpairamidis E et al: Extraventricular neurocytoma in a child: case report and review of the literature. J Child Neurol. 24(4):491-4, 2009
                                      17. Rodriguez FJ et al: Interphase cytogenetics for 1p19q and t(1;19)(q10;p10) may distinguish prognostically relevant subgroups in extraventricular neurocytoma. Brain Pathol. 19(4):623-9, 2009
                                      18. Yang GF et al: Imaging findings of extraventricular neurocytoma: report of 3 cases and review of the literature. AJNR Am J Neuroradiol. 30(3):581-5, 2009
                                      19. Amemiya S et al: Recently established entities of central nervous system tumors: review of radiological findings. J Comput Assist Tomogr. 32(2):279-85, 2008
                                      20. Raja AI et al: Extraventricular neurocytoma in neurofibromatosis type 1: case report. J Neurosurg Pediatr. 2(1):63-7, 2008
                                      21. Sakurada K et al: A rare case of extraventricular neurocytoma. Brain Tumor Pathol. 24(1):19-23, 2007
                                      22. Ueda F et al: Automated MR spectroscopy of intra- and extraventricular neurocytomas. Magn Reson Med Sci. 6(2):75-81, 2007
                                      23. Lenzi J et al: Intraventricular neurocytoma with massive brain stem involvement in a 5-year-old child. Childs Nerv Syst. 22(1):95-8, 2006
                                      24. Sharma MC et al: Neurocytoma: a comprehensive review. Neurosurg Rev. 29(4):270-85; discussion 285, 2006
                                      25. Swinson BM et al: Pontine atypical neurocytoma: case report. Neurosurgery. 58(5):E990; discussion E990, 2006
                                      26. Mut M et al: Challenging diagnosis: oligodendroglioma versus extraventricular neurocytoma. Clin Neuropathol. 24(5):225-9, 2005
                                      27. Ritz R et al: Extraventricular neurocytoma presenting with intratumoral hemorrhage. Clin Neuropathol. 24(3):101-5, 2005
                                      28. Mrak RE et al: Atypical extraventricular neurocytoma with oligodendroglioma-like spread and an unusual pattern of chromosome 1p and 19q loss. Hum Pathol. 35(9):1156-9, 2004
                                      29. Fujisawa H et al: Genetic differences between neurocytoma and dysembryoplastic neuroepithelial tumor and oligodendroglial tumors. J Neurosurg. 97(6):1350-5, 2002
                                      30. Kowalski RJ et al: Skull base neurocytoma: case report and review of the literature of extraventricular neurocytomas. Skull Base. 12(2):59-65, 2002
                                      31. Möller-Hartmann W et al: Proton magnetic resonance spectroscopy of neurocytoma outside the ventricular region--case report and review of the literature. Neuroradiology. 44(3):230-4, 2002
                                      Related Anatomy
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                                      Related Differential Diagnoses
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                                      References
                                      Tables

                                      Tables

                                      KEY FACTS

                                      • Terminology

                                        • Imaging

                                          • Top Differential Diagnoses

                                            • Pathology

                                              • Clinical Issues

                                                TERMINOLOGY

                                                • Abbreviations

                                                  • Extraventricular neurocytoma (EVN)

                                                • Definitions

                                                  • Neuroepithelial tumor located outside of ventricular system, commonly in brain parenchyma

                                                IMAGING

                                                • General Features

                                                  • Imaging Recommendations

                                                    • CT Findings

                                                      • MR Findings

                                                        DIFFERENTIAL DIAGNOSIS

                                                          PATHOLOGY

                                                          • General Features

                                                            • Staging, Grading, & Classification

                                                              • Gross Pathologic & Surgical Features

                                                                • Microscopic Features

                                                                  CLINICAL ISSUES

                                                                  • Presentation

                                                                    • Demographics

                                                                      • Natural History & Prognosis

                                                                        • Treatment

                                                                          Selected References

                                                                          1. Romano N et al: Imaging of extraventricular neurocytoma: a systematic literature review. Radiol Med. ePub, 2020
                                                                          2. Romano N et al: Atypical extraventricular neurocytoma: imaging findings of disregarded diagnosis. World Neurosurg. 129:186-7, 2019
                                                                          3. Tish S et al: The epidemiology of central and extraventricular neurocytoma in the United States between 2006 and 2014. J Neurooncol. 143(1):123-7, 2019
                                                                          4. Jiang M et al: Imaging characteristics of cerebral extraventricular neurocytoma with pathological correlation. J Neurooncol. 140(2):289-96, 2018
                                                                          5. Xu L et al: A clinicopathologic study of extraventricular neurocytoma. J Neurooncol. 132(1):75-82, 2017
                                                                          6. Extraventricular neurocytoma. In Louis DN et al:  WHO Classification of Tumours of the Central Nervous System. IARC Press. 159-60, 2016
                                                                          7. Sweiss FB et al: Extraventricular neurocytomas. Neurosurg Clin N Am. 26(1):99-104, 2015
                                                                          8. Kawaji H et al: Extraventricular neurocytoma of the sellar region with spinal dissemination. Brain Tumor Pathol. 31(1):51-6, 2014
                                                                          9. Nabavizadeh SA et al: Extraventricular neurocytoma and ganglioneurocytoma: advanced MR imaging, histopathological, and chromosomal findings. J Neuroimaging. 24(6):613-6, 2014
                                                                          10. Huang WY et al: Computed tomography and magnetic resonance features of extraventricular neurocytoma: a study of eight cases. Clin Radiol. 68(4):e206-12, 2013
                                                                          11. Liu K et al: MR imaging of cerebral extraventricular neurocytoma: a report of 9 cases. AJNR Am J Neuroradiol. 34(3):541-6, 2013
                                                                          12. Myung JK et al: Clinicopathological and genetic characteristics of extraventricular neurocytomas. Neuropathology. 33(2):111-21, 2013
                                                                          13. Hawasli AH et al: Pontine extraventricular neurocytoma in a child. Pediatr Neurosurg. 48(5):319-23, 2012
                                                                          14. Aralasmak A et al: Nonenhancing hypovascular extraventricular neurocytoma. AJNR Am J Neuroradiol. 30(8):E117; author reply E118, 2009
                                                                          15. Gokhan GA et al: A case of extraventricular neurocytoma of the spinal cord. Neuropathology. 2008 Jun;28(3):322-5. Epub 2008 Jan 9. Erratum in: Neuropathology. 29(2):208, 2009
                                                                          16. Mpairamidis E et al: Extraventricular neurocytoma in a child: case report and review of the literature. J Child Neurol. 24(4):491-4, 2009
                                                                          17. Rodriguez FJ et al: Interphase cytogenetics for 1p19q and t(1;19)(q10;p10) may distinguish prognostically relevant subgroups in extraventricular neurocytoma. Brain Pathol. 19(4):623-9, 2009
                                                                          18. Yang GF et al: Imaging findings of extraventricular neurocytoma: report of 3 cases and review of the literature. AJNR Am J Neuroradiol. 30(3):581-5, 2009
                                                                          19. Amemiya S et al: Recently established entities of central nervous system tumors: review of radiological findings. J Comput Assist Tomogr. 32(2):279-85, 2008
                                                                          20. Raja AI et al: Extraventricular neurocytoma in neurofibromatosis type 1: case report. J Neurosurg Pediatr. 2(1):63-7, 2008
                                                                          21. Sakurada K et al: A rare case of extraventricular neurocytoma. Brain Tumor Pathol. 24(1):19-23, 2007
                                                                          22. Ueda F et al: Automated MR spectroscopy of intra- and extraventricular neurocytomas. Magn Reson Med Sci. 6(2):75-81, 2007
                                                                          23. Lenzi J et al: Intraventricular neurocytoma with massive brain stem involvement in a 5-year-old child. Childs Nerv Syst. 22(1):95-8, 2006
                                                                          24. Sharma MC et al: Neurocytoma: a comprehensive review. Neurosurg Rev. 29(4):270-85; discussion 285, 2006
                                                                          25. Swinson BM et al: Pontine atypical neurocytoma: case report. Neurosurgery. 58(5):E990; discussion E990, 2006
                                                                          26. Mut M et al: Challenging diagnosis: oligodendroglioma versus extraventricular neurocytoma. Clin Neuropathol. 24(5):225-9, 2005
                                                                          27. Ritz R et al: Extraventricular neurocytoma presenting with intratumoral hemorrhage. Clin Neuropathol. 24(3):101-5, 2005
                                                                          28. Mrak RE et al: Atypical extraventricular neurocytoma with oligodendroglioma-like spread and an unusual pattern of chromosome 1p and 19q loss. Hum Pathol. 35(9):1156-9, 2004
                                                                          29. Fujisawa H et al: Genetic differences between neurocytoma and dysembryoplastic neuroepithelial tumor and oligodendroglial tumors. J Neurosurg. 97(6):1350-5, 2002
                                                                          30. Kowalski RJ et al: Skull base neurocytoma: case report and review of the literature of extraventricular neurocytomas. Skull Base. 12(2):59-65, 2002
                                                                          31. Möller-Hartmann W et al: Proton magnetic resonance spectroscopy of neurocytoma outside the ventricular region--case report and review of the literature. Neuroradiology. 44(3):230-4, 2002