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      Tumor neuroectodérmico primitivo supratentorial: estudo de quatro casos Translated title: Primitive neuroectodermal tumor of the central nervous system: report of four cases

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          Abstract

          As alterações clinicopatológicas e imuno-histoquímicas de quatro casos de tumores neuroectodérmicos primitivos do sistema nervoso central foram investigadas. Três pacientes morreram. Todos os casos mostraram células vimentina positivas com morfologia de células neoplásicas e um caso mostrou células neoplásicas com imunoexpressão para proteína glial fibrilar acídica, enolase neuro-específica e neurofilamento. O presente estudo indica que este grupo de tumores tem mau prognóstico e pode mostrar alterações imuno-histoquímicas que indicam diferenciação glial e/ou neuronal.

          Translated abstract

          The clinicopathological and immunohistochemical features of four cases of primitive neuroectodermal tumors of the central nervous system were investigated. Three patients died. All cases showed vimentin-positive cells with the morphology of neoplastic cells and one case showed glial fibrillary acidic protein, neuron-specific enolase and neurofilament protein-positive cell. The present study indicates that this group of tumors have bad prognostics and may show immunocytochemical features indicating glial and/or neuronal differentiation.

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          Most cited references13

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          The New WHO Classification of Brain Tumours

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            Primitive neuroectodermal tumors of the brain in children.

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              Primitive neuroectodermal tumors of the central nervous system.

              Primitive neuroectodermal tumors are morphologically similar malignant tumors arising in intracranial and peripheral sites of the nervous system, showing varying degrees of cellular differentiation with a tendency to disseminate along cerebrospinal fluid pathways. They occur primarily in children and young adults. Under the designation primitive neuroectodermal tumors are included medulloblastomas and tumors that may differentiate in other directions, such as medulloepithelioma, neuroblastoma, polar spongioblastoma, pineoblastoma, ependymoblastoma, retinoblastoma, and olfactory neuroblastoma. From a practical, histologic point of view, these tumors are often indistinguishable from one another and are best thought of as primitive neuroectodermal tumors with or without differentiating features.
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                Author and article information

                Journal
                anp
                Arquivos de Neuro-Psiquiatria
                Arq. Neuro-Psiquiatr.
                Academia Brasileira de Neurologia - ABNEURO (São Paulo, SP, Brazil )
                0004-282X
                1678-4227
                September 1994
                : 52
                : 3
                : 392-395
                Affiliations
                [02] orgnameEscola Paulista de Medicina orgdiv1Departamento de Anatomia Patológica
                [01] orgnameEscola Paulista de Medicina orgdiv1Departamento de Anatomia Patológica
                Article
                S0004-282X1994000300017 S0004-282X(94)05200317
                10.1590/S0004-282X1994000300017
                d19ae2c5-459f-4ff6-bdba-612764bfc60f

                This work is licensed under a Creative Commons Attribution 4.0 International License.

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                Figures: 0, Tables: 0, Equations: 0, References: 14, Pages: 4
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                SciELO Brazil


                imuno-histoquímica,primitive neuroectodermal tumor,diferenciação,tumor neuroectodérmico primitivo,differentiation,immunohistochemistry

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