Extraventricular Neurocytoma in Parietal Lobe
Extraventricular neurocytoma (EVN) was classified as a World Health Organization (WHO) grade II tumor; however, EVN is not fully understood; it presents a variable histological feature that included oligodendroglioma-like, neuropil-like matrix, ganglion or gangloid cells, perivascular pseudorosettes...
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| Language: | English |
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Thieme Medical and Scientific Publishers Pvt. Ltd.
2021-04-01
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| Series: | Indian Journal of Neurosurgery |
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| Online Access: | http://www.thieme-connect.de/DOI/DOI?10.1055/s-0041-1727546 |
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| author | Katherine Gallego-Henao José M. Ramos-Delgado Angelica Moreno-Blanco Aureliano Placido-Méndez Antonio Zarate-Mendez |
| author_facet | Katherine Gallego-Henao José M. Ramos-Delgado Angelica Moreno-Blanco Aureliano Placido-Méndez Antonio Zarate-Mendez |
| author_sort | Katherine Gallego-Henao |
| collection | DOAJ |
| description | Extraventricular neurocytoma (EVN) was classified as a World Health Organization (WHO) grade II tumor; however, EVN is not fully understood; it presents a variable histological feature that included oligodendroglioma-like, neuropil-like matrix, ganglion or gangloid cells, perivascular pseudorosettes, vessel hyalinization, calcifications, and myxoid degeneration. In some very rare cases, atypical histological features such as increased mitotic figures, focal necrosis, endothelial cell proliferation, and Ki-67 index of >2% made this tumor more aggressive and more susceptible to recur. We present the case of a young patient who presents with a 2-year history of seizure without other symptoms. Magnetic resonance imaging reveals a parietal lobe and well-circumscribed lesion treated by gross total resection and adjuvant radiotherapy. Clear guidelines to treat this kind of lesions are not well established and there is not a consensus of correct treatment in these tumors. |
| format | Article |
| id | doaj-art-b6dd925e871c40169cd7161289fce3fa |
| institution | OA Journals |
| issn | 2277-954X 2277-9167 |
| language | English |
| publishDate | 2021-04-01 |
| publisher | Thieme Medical and Scientific Publishers Pvt. Ltd. |
| record_format | Article |
| series | Indian Journal of Neurosurgery |
| spelling | doaj-art-b6dd925e871c40169cd7161289fce3fa2025-08-20T02:00:28ZengThieme Medical and Scientific Publishers Pvt. Ltd.Indian Journal of Neurosurgery2277-954X2277-91672021-04-01100214414710.1055/s-0041-1727546Extraventricular Neurocytoma in Parietal LobeKatherine Gallego-Henao0José M. Ramos-Delgado1Angelica Moreno-Blanco2Aureliano Placido-Méndez3Antonio Zarate-Mendez4Department of Neurosurgery, Centro Médico Nacional “20 de Noviembre” Instituto de Seguridad y Servicios Sociales de los Trabajadores del Estado (ISSSTE), Mexico City, MéxicoDepartment of Neurosurgery, Centro Médico Nacional “20 de Noviembre” Instituto de Seguridad y Servicios Sociales de los Trabajadores del Estado (ISSSTE), Mexico City, MéxicoDepartment of Pathology, Centro Medico Nacional “20 de Noviembre” Instituto de Seguridad y Servicios Sociales de los Trabajadores del Estado (ISSSTE), Mexico City, MéxicoDepartment of Pathology, Centro Medico Nacional “20 de Noviembre” Instituto de Seguridad y Servicios Sociales de los Trabajadores del Estado (ISSSTE), Mexico City, MéxicoDepartment of Neurosurgery, Centro Médico Nacional “20 de Noviembre” Instituto de Seguridad y Servicios Sociales de los Trabajadores del Estado (ISSSTE), Mexico City, MéxicoExtraventricular neurocytoma (EVN) was classified as a World Health Organization (WHO) grade II tumor; however, EVN is not fully understood; it presents a variable histological feature that included oligodendroglioma-like, neuropil-like matrix, ganglion or gangloid cells, perivascular pseudorosettes, vessel hyalinization, calcifications, and myxoid degeneration. In some very rare cases, atypical histological features such as increased mitotic figures, focal necrosis, endothelial cell proliferation, and Ki-67 index of >2% made this tumor more aggressive and more susceptible to recur. We present the case of a young patient who presents with a 2-year history of seizure without other symptoms. Magnetic resonance imaging reveals a parietal lobe and well-circumscribed lesion treated by gross total resection and adjuvant radiotherapy. Clear guidelines to treat this kind of lesions are not well established and there is not a consensus of correct treatment in these tumors.http://www.thieme-connect.de/DOI/DOI?10.1055/s-0041-1727546evnextraventricular neurocytomacentral neurocytoma |
| spellingShingle | Katherine Gallego-Henao José M. Ramos-Delgado Angelica Moreno-Blanco Aureliano Placido-Méndez Antonio Zarate-Mendez Extraventricular Neurocytoma in Parietal Lobe Indian Journal of Neurosurgery evn extraventricular neurocytoma central neurocytoma |
| title | Extraventricular Neurocytoma in Parietal Lobe |
| title_full | Extraventricular Neurocytoma in Parietal Lobe |
| title_fullStr | Extraventricular Neurocytoma in Parietal Lobe |
| title_full_unstemmed | Extraventricular Neurocytoma in Parietal Lobe |
| title_short | Extraventricular Neurocytoma in Parietal Lobe |
| title_sort | extraventricular neurocytoma in parietal lobe |
| topic | evn extraventricular neurocytoma central neurocytoma |
| url | http://www.thieme-connect.de/DOI/DOI?10.1055/s-0041-1727546 |
| work_keys_str_mv | AT katherinegallegohenao extraventricularneurocytomainparietallobe AT josemramosdelgado extraventricularneurocytomainparietallobe AT angelicamorenoblanco extraventricularneurocytomainparietallobe AT aurelianoplacidomendez extraventricularneurocytomainparietallobe AT antoniozaratemendez extraventricularneurocytomainparietallobe |