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Rai V, Jaiswal S, Nangarwal B, Bhargav M. Intraventricular papillary glioneuronal tumor with high proliferation index and CD117 positivity: Report of an atypical case and review of literature. J Cancer Res Ther 2023; 19:1426-1429. [PMID: 37787321 DOI: 10.4103/jcrt.jcrt_434_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Papillary glioneuronal tumors are rare neoplasm, accounting only <0.02% of all intracranial tumors. They are generally low grade usually occur in the temporal lobe near the third ventricle. We report an extremely rare case of intraventricular tumor with a high proliferation index. CD 117 expression found in our case is the first study to the best of our knowledge to be described in these tumors. The clinical and diagnostic significance of this finding is subject to further studies.
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Affiliation(s)
- Varnika Rai
- Department of Pathology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Sushila Jaiswal
- Department of Pathology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Bhawan Nangarwal
- Department of Neurosurgery, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Mithilesh Bhargav
- Department of Pathology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
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de Jong JM, Broekaart DWM, Bongaarts A, Mühlebner A, Mills JD, van Vliet EA, Aronica E. Altered Extracellular Matrix as an Alternative Risk Factor for Epileptogenicity in Brain Tumors. Biomedicines 2022; 10:2475. [PMID: 36289737 DOI: 10.3390/biomedicines10102475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 09/23/2022] [Accepted: 09/26/2022] [Indexed: 11/17/2022] Open
Abstract
Seizures are one of the most common symptoms of brain tumors. The incidence of seizures differs among brain tumor type, grade, location and size, but paediatric-type diffuse low-grade gliomas/glioneuronal tumors are often highly epileptogenic. The extracellular matrix (ECM) is known to play a role in epileptogenesis and tumorigenesis because it is involved in the (re)modelling of neuronal connections and cell-cell signaling. In this review, we discuss the epileptogenicity of brain tumors with a focus on tumor type, location, genetics and the role of the extracellular matrix. In addition to functional problems, epileptogenic tumors can lead to increased morbidity and mortality, stigmatization and life-long care. The health advantages can be major if the epileptogenic properties of brain tumors are better understood. Surgical resection is the most common treatment of epilepsy-associated tumors, but post-surgery seizure-freedom is not always achieved. Therefore, we also discuss potential novel therapies aiming to restore ECM function.
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Johnson MD, Almast J, Pieters T, Walter K. Atypical papillary glioneuronal tumor of the lateral ventricle. Interdisciplinary Neurosurgery 2022; 28:101509. [DOI: 10.1016/j.inat.2022.101509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Shinno K, Arakawa Y, Minamiguchi S, Terada Y, Tanji M, Mineharu Y, Kikuchi T, Haga H, Miyamoto S. Papillary glioneuronal tumor growing slowly for 26 years: illustrative case. Journal of Neurosurgery: Case Lessons 2021; 2:CASE21266. [PMID: 35854961 PMCID: PMC9272362 DOI: 10.3171/case21266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 05/05/2021] [Indexed: 11/06/2022]
Abstract
BACKGROUND Papillary glioneuronal tumors (PGNTs) are classified as a type of World Health Organization grade I mixed neuronal-glial tumor. Most PGNTs involve cystic formations with mural nodules and solid components in the cerebral hemispheres, and PGNTs occur mainly in young adults. The long-term prognosis of PGNTs remains unclear. OBSERVATIONS A 38-year-old male had been diagnosed with an arachnoid cyst associated with epilepsy in a local hospital. The initial magnetic resonance imaging (MRI) study showed the tumor as a heterogeneously enhanced nodule in the left postcentral gyrus. Subsequent MRI studies showed slow growth of the tumor for 26 years. He underwent gross total resection to control his epilepsy. The histopathological findings revealed pseudopapillary structures involving hyalinized blood vessels with a single or pseudostratified layer of cuboidal glial cells with round nuclei and scant cytoplasm. At the periphery of the lesion, Rosenthal fibers and acidophilic granule bodies were observed in the gliotic brain tissue. Immunohistochemically, some interpapillary cells were positive for NeuN. On the basis of these findings, the tumor was diagnosed as a PGNT. LESSONS This PGNT showed slow growth for 26 years. When recognizing a slowly growing tumor in the cerebral hemispheres of relatively young people that is associated with epileptic seizures, PGNT should be considered as a differential diagnosis.
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Affiliation(s)
| | | | - Sachiko Minamiguchi
- Diagnostic Pathology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | | | | | | | | | - Hironori Haga
- Diagnostic Pathology, Kyoto University Graduate School of Medicine, Kyoto, Japan
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Goethe EA, Youssef M, Patel AJ, Jalali A, Goodman JC, Mandel JJ. Recurrent Papillary Glioneuronal Tumor. World Neurosurg 2019; 128:127-130. [DOI: 10.1016/j.wneu.2019.04.266] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Revised: 04/29/2019] [Accepted: 04/30/2019] [Indexed: 12/20/2022]
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Castro Castro J, Lista Martínez O, Caramés Díaz N, Conde Lorenzo N. Tumor glioneuronal papilar. Descripción de un caso. Neurocirugia (Astur) 2019; 30:144-148. [DOI: 10.1016/j.neucir.2018.04.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 03/29/2018] [Accepted: 04/14/2018] [Indexed: 01/09/2023]
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Abstract
Only a few cases of papillary glioneuronal tumour (PGNT) with predominantly focal symptomatology are described in the literature. We report on the clinical, radiological, and histopathological features of PGNT. The intraoperative pathology revealed no tumour in the walls of the cyst, thus surgical resection of the nodule was performed leaving the cyst wall intact. There was no recurrence of tumour at the three-year follow-up, although a long-term follow-up is necessary.
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Affiliation(s)
| | | | - Ewell L Nelson
- Neurosurgery, Boulder Neurosurgical Associates, Boulder, USA
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Ahmed AK, Dawood HY, Gerard J, Smith TR. Surgical Resection and Cellular Proliferation Index Predict Prognosis for Patients with Papillary Glioneuronal Tumor: Systematic Review and Pooled Analysis. World Neurosurg 2017; 107:534-541. [DOI: 10.1016/j.wneu.2017.08.041] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 08/05/2017] [Accepted: 08/08/2017] [Indexed: 01/11/2023]
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Yadav N, Rao S, Saini J, Prasad C, Mahadevan A, Sadashiva N. Papillary glioneuronal tumors: A radiopathologic correlation. Eur J Radiol 2017; 97:44-52. [PMID: 29153366 DOI: 10.1016/j.ejrad.2017.10.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2017] [Revised: 09/24/2017] [Accepted: 10/02/2017] [Indexed: 01/06/2023]
Abstract
OBJECTIVE Papillary glioneuronal tumors (PGNT) are a rare and recently recognized tumor entity. The neuroimaging findings were reviewed to determine if any specific findings emerge to assist a preoperative diagnosis of PGNT. MATERIALS AND METHODS Seven histologically confirmed cases of PGNT were evaluated from 2004 to 2014. Clinical, neuroimaging and histological findings were reviewed and tabulated. RESULTS Headache and seizures were observed in 4 patients (57.1%) each. The majority (n=5, 71.4%) of lesions were periventricular and located in temporal lobe with 57.1% cases being solid cystic (n=4), and 42.9% being purely solid (n=3). Calcification and hemorrhage were noted in 3 cases (42.9%) and 5 cases (71.4%) respectively. The most frequent imaging feature was the presence of septations in the cystic component that enhanced on contrast which correlated with long pseudopapillary projections into the cyst cavity on histopathology. The solid inner component demonstrated heterogeneous enhancement. One case with tumor recurrence demonstrated hemorrhage with superficial siderosis, patchy diffusion restriction, raised choline and focal areas of raised perfusion which correlated on histopathology with increased cellularity and anaplasia. CONCLUSION Presence of cystic mass in periventricular location with septations and a solid inner component should raise a suspicion of PGNT on neuroimaging.
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Affiliation(s)
- Nishtha Yadav
- Department of Neuroimaging and Interventional Radiology, National Institute of Mental Health and Neurosciences, Bangalore-560029, India.
| | - Shilpa Rao
- Department of Neuropathology, National Institute of Mental Health and Neurosciences, Bangalore-560029, India.
| | - Jitender Saini
- Department of Neuroimaging and Interventional Radiology, National Institute of Mental Health and Neurosciences, Bangalore-560029, India.
| | - Chandrajit Prasad
- Department of Neuroimaging and Interventional Radiology, National Institute of Mental Health and Neurosciences, Bangalore-560029, India.
| | - Anita Mahadevan
- Department of Neuropathology, National Institute of Mental Health and Neurosciences, Bangalore-560029, India.
| | - Nishanth Sadashiva
- Department of Neursurgery, National Institute of Mental Health and Neurosciences, Bangalore-560029, India.
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Zhao RJ, Zhang XL, Chu SG, Zhang M, Kong LF, Wang Y. Clinicopathologic and neuroradiologic studies of papillary glioneuronal tumors. Acta Neurochir (Wien) 2016; 158:695-702. [PMID: 26899971 DOI: 10.1007/s00701-016-2744-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Accepted: 02/08/2016] [Indexed: 11/25/2022]
Abstract
BACKGROUND Papillary glioneuronal tumor (PGNT) is a rare, recently described distinct low-grade brain neoplasm. This study was performed to characterize the clinicopathologic and neuroradiologic features of PGNTs. METHODS We reviewed the medical records of 16 patients with PGNT who underwent surgery, including 11 males and five females (median age 27 years). The clinical, neuroradiologic, histopathologic, and immunohistochemical findings were documented. RESULTS Headache was the principal presentation. Neuroimaging showed contrast-enhancing, cystic-solid or cystic masses with a mural nodule, mostly involved the frontal or parietal lobes. Histologically, the tumors were characterized by glial fibrillary acidic protein (GFAP)-positive small cuboidal cells lining hyalinized vascular pseudopapillae and synaptophysin and/or NeuN-positive interpapillary neuronal elements. Other findings included small angiomatous areas in ten, small islands of neuropil and rosettes in seven, and microvascular proliferation and/or nuclear atypia in six. Mitoses or necrosis were absent. All lacked isocitrate dehydrogenase 1 (IDH1) R132H protein expression. Low expression of p53 was observed in three cases. Ki67 labeling index ranged from less than 1 to 3 %. All but one was totally resected. Median follow-up was 65 months, and one patient had tumor recurrence. CONCLUSIONS PGNTs display distinct clinicopathologic and imaging characteristics and indicate a favorable prognosis. However, recurrences sometimes occur. Immunohistochemistry facilitates the appropriate diagnosis of these tumors. Complete resection of the tumor is important for a favorable outcome.
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Affiliation(s)
- Rui-Jiao Zhao
- Department of Pathology, The People's Hospital of Zhengzhou University, Zhengzhou, Henan, China, 450003
| | - Xia-Ling Zhang
- Division of Neuropathology and Department of Pathology, Huashan Hospital of Fudan University, 12 Wu Lu Mu Qi Zhong Road, Shanghai, 200040, China
| | - Shu-Guang Chu
- Department of Radiology, Huashan Hospital of Fudan University, Shanghai, China, 200040
| | - Ming Zhang
- Department of Radiology, The People's Hospital of Zhengzhou University, Zhengzhou, Henan, China, 450003
| | - Ling-Fei Kong
- Department of Pathology, The People's Hospital of Zhengzhou University, Zhengzhou, Henan, China, 450003
| | - Yin Wang
- Division of Neuropathology and Department of Pathology, Huashan Hospital of Fudan University, 12 Wu Lu Mu Qi Zhong Road, Shanghai, 200040, China.
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Abstract
There is a wide variety of intra-axial primary and secondary brain neoplasms. Many of them have characteristic imaging features while other tumors can present in a similar fashion. There are peculiar posttreatment imaging phenomena that can present as intra-axial mass-like lesions (such as pseudoprogression or radiation necrosis), further complicating the diagnosis and clinical follow-up of patients with intracerebral tumors. The purpose of this chapter is to present a general overview of the most common intra-axial brain tumors and peculiar posttreatment changes that are very important in the diagnosis and clinical follow-up of patients with brain tumors.
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Affiliation(s)
- Otto Rapalino
- Division of Neuroradiology, Department of Radiology, Massachusetts General Hospital, Boston, MA, USA.
| | - Tracy Batchelor
- Departments of Neurology and Radiation Oncology, Division of Hematology/Oncology, Massachusetts General Hospital, Boston, MA, USA
| | - R Gilberto González
- Division of Neuroradiology, Department of Radiology, Massachusetts General Hospital, Boston, MA, USA
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Abstract
Following a traditional approach, in Chapters 5 and 14-29 in the previous volume, diverse brain diseases are listed and their imaging findings described in detail. In this chapter the approach is from the imaging finding to the disease: for instance, what list of diseases can give rise to a contrast-enhancing mass in the cerebellopontine angle? Imaging findings that are reviewed in succession include the location of the lesion, its multiplicity and symmetry, its volume, ranging from atrophy to mass effect, its homogeneity, its density, measurable by computed tomography (CT), its appearance on T1, T2, and diffusion magnetic resonance imaging (MRI), and, finally, its characteristics after the infusion of intravenous contrast. A differential diagnosis for each finding is provided. While the approach adopted in this chapter is unconventional, we hope that it will be most helpful to anyone reading images. Furthermore, it could serve as the basis to create or complete image databases to guide in the interpretation of brain CT and MRI.
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Affiliation(s)
- Joseph C Masdeu
- Department of Neurology, Houston Methodist Hospital, Houston, TX, USA.
| | - Rajan Gadhia
- Department of Neurology, Houston Methodist Hospital, Houston, TX, USA
| | - Alireza Faridar
- Department of Neurology, Houston Methodist Hospital, Houston, TX, USA
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Abstract
This chapter describes the epidemiology, pathology, molecular characteristics, clinical and neuroimaging features, treatment, outcome, and prognostic factors of the rare glial tumors. This category includes subependymal giant cell astrocytoma, pleomorphic xanthoastrocytoma, astroblastoma, chordoid glioma of the third ventricle, angiocentric glioma, ganglioglioma, desmoplastic infantile astrocytoma and ganglioma, dysembryoplastic neuroepithelial tumor, papillary glioneuronal tumor, and rosette-forming glioneuronal tumor of the fourth ventricle. Many of these tumors, in particular glioneuronal tumors, prevail in children and young adults, are characterized by pharmacoresistant seizures, and have an indolent course, and long survival following surgical resection. Radiotherapy and chemotherapy are reserved for recurrent and/or aggressive forms. New molecular alterations are increasingly recognized.
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Affiliation(s)
- Riccardo Soffietti
- Department of Neuro-Oncology, University and City of Health and Science Hospital, Turin, Italy.
| | - Roberta Rudà
- Department of Neuro-Oncology, University and City of Health and Science Hospital, Turin, Italy
| | - David Reardon
- Center for Neuro-Oncology, Harvard Medical School and Dana-Farber Cancer Institute, Boston, USA
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Pages M, Lacroix L, Tauziede-Espariat A, Castel D, Daudigeos-Dubus E, Ridola V, Gilles S, Fina F, Andreiuolo F, Polivka M, Lechapt-Zalcman E, Puget S, Boddaert N, Liu XQ, Bridge JA, Grill J, Chretien F, Varlet P. Papillary glioneuronal tumors: histological and molecular characteristics and diagnostic value of SLC44A1-PRKCA fusion. Acta Neuropathol Commun 2015; 3:85. [PMID: 26671581 PMCID: PMC4681033 DOI: 10.1186/s40478-015-0264-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 12/05/2015] [Indexed: 11/10/2022] Open
Abstract
INTRODUCTION Papillary Glioneuronal Tumor (PGNT) is a grade I tumor which was classified as a separate entity in the World Health Organization Classification of the Central Nervous System 2007 in the group of mixed glioneuronal tumors. This tumor is rare and subclassifying PGNT represents a challenge. Recently, a fusion between SLC44A1 and PRKCA which encodes a protein kinase C involved in MAPK signaling pathway has been described in two studies (five cases). The current study aimed at raising the cytogenetic, histological and molecular profiles of PGNT and to determine if SLC44A1-PRKCA fusion represented a specific diagnostic marker to distinguish it from other glioneuronal tumors. RESULTS We report on four pediatric cases of PGNT, along with clinico-radiologic and immunohistological features for which SLC44A1-PRKCA fusion assessment by fluorescence in situ hybridization, BRAF V600E and FGFR1 mutation by immunohistochemistry and direct DNA sequencing and KIAA1549-BRAF fusion by RT-PCR were performed. MAPK signaling pathway activation was investigated using phospho-ERK immunohistochemistry and western blot. We analyzed fifteen cases of tumors with challenging histological or clinical differential diagnoses showing respectively a papillary architecture or periventricular location (PGNT mimics). fluorescence in situ hybridization analysis revealed a constant SLC44A1-PRKCA fusion signal in all PGNTs. None of PGNT mimics showed the SLC44A1-PRKCA fusion signal pattern. All PGNTs were negative for BRAF V600E and FGFR1 mutation, and KIAA1549-BRAF fusion. Phospho-ERK analysis provides arguments for the activation of the MAPK signaling pathway in these tumors. CONCLUSIONS Here we confirmed and extended the molecular data on PGNT. These results suggest that PGNT belong to low grade glioma with MAPK signaling pathway deregulation. SLC44A1-PRKCA fusion seems to be a specific characteristic of PGNT with a high diagnostic value and detectable by FISH.
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Tan W, Huang W, Xiong J, Pan J, Geng D, Jun Z. Neuroradiological features of papillary glioneuronal tumor: a study of 8 cases. J Comput Assist Tomogr 2014; 38:634-8. [PMID: 24879457 DOI: 10.1097/RCT.0000000000000109] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
OBJECTIVE The purpose of this study was to characterize the magnetic resonance imaging (MRI), and computed tomographic (CT) findings in a series of 8 patients with papillary glioneuronal tumor (PGNT). METHODS The routine MRI (n = 8), DWI (n = 7), and CT (n = 4) of 8 PGNTs verified by pathologic examination were reviewed. The location, internal architecture, calcification, attenuation value on CT; and signal features and degree of enhancement of the lesions on MRI were evaluated. RESULTS Papillary glioneuronal tumor showed relatively characteristic imaging features as well-demarcated masses with cystic degeneration, calcification, and inhomogeneous enhancement. Six of the 8 cases were located in the periventricular area. The solid part of the lesion was isointense (n = 5/8) or hypointense (n = 3/8) to gray matter on T1-weighted imaging. Diffusion-weighted imaging presented heterogeneous hypointensity and isointensity (n = 4/7) or homogeneous hypointensity (n = 3/7) in the solid part of the lesion. CONCLUSIONS The location adjacent to lateral ventricle, isointensity on T1-weighted imaging, and low signal on DWI may be of some specificity to PGNT.
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Momota H, Fujii M, Tatematsu A, Shimoyama Y, Tsujiuchi T, Ohno M, Natsume A, Wakabayashi T. Papillary glioneuronal tumor with a high proliferative component and minigemistocytes in a child. Neuropathology 2014; 34:484-90. [DOI: 10.1111/neup.12123] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 03/18/2014] [Accepted: 03/19/2014] [Indexed: 01/27/2023]
Affiliation(s)
- Hiroyuki Momota
- Department of Neurosurgery; Nagoya University Hospital; Nagoya Japan
| | - Masazumi Fujii
- Department of Neurosurgery; Nagoya University Hospital; Nagoya Japan
| | - Akiko Tatematsu
- Department of Pathology and Clinical Laboratories; Nagoya University Hospital; Nagoya Japan
| | - Yoshie Shimoyama
- Department of Pathology and Clinical Laboratories; Nagoya University Hospital; Nagoya Japan
| | - Takashi Tsujiuchi
- Department of Neurosurgery; Nagoya University Hospital; Nagoya Japan
| | - Masasuke Ohno
- Department of Neurosurgery; Nagoya University Hospital; Nagoya Japan
| | - Atsushi Natsume
- Department of Neurosurgery; Nagoya University Hospital; Nagoya Japan
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Li D, Wang JM, Li GL, Hao SY, Yang Y, Wu Z, Zhang LW, Zhang JT. Clinical, radiological, and pathological features of 16 papillary glioneuronal tumors. Acta Neurochir (Wien) 2014; 156:627-39. [PMID: 24553727 DOI: 10.1007/s00701-014-2023-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Accepted: 01/30/2014] [Indexed: 12/17/2022]
Abstract
BACKGROUND Papillary glioneuronal tumors (PGNTs) are a novel distinct intracranial neoplastic entity. In this study, the authors aimed to analyze the clinical, radiological, and pathological features of PGNT. METHODS Clinical charts and radiographs of 16 cases of PGNT surgically treated between 2006 and 2013 were retrospectively reviewed. Follow-up evaluations and a literature review were performed. RESULTS The study included nine males and seven females with a mean age of 23.8 years. The most common preoperative symptom was headache (68.8 %, 11 of 16 patients). Radiological results showed that the frontal lobe (25.0 %) was the most common portion of the brain involved, and 13 lesions (81.3 %) presented with cystic appearance with or without solid elements. All patients were misdiagnosed as non-PGNT tumors. Complete resection was achieved in 12 patients (75.0 %). Ki67 staining was positive in <1 % of cells present in eight lesions and varied in the other eight lesions, with a range of 1 % to 13 %. The mean follow-up duration was 56.2 months, and no recurrence was observed. Seventy-seven PGNTs (40 males, 51.9 %) have been reported, and 49 patients stained positive for Ki67/MIB-1. Of these cases, 28 (57.1 %) had positive staining rates of ≥1 %. In 51 patients for whom outcome information was available, six (11.8 %) exhibited recurrence, and the recurrence rates for complete resection and incomplete resection were 5.1 % and 33.3 %, respectively. CONCLUSIONS PGNTs displayed a wide spectrum of clinical and radiological phenotypes, and they were more frequently observed in the frontal lobe and in young patients without sex predilection. Fair outcomes could be achieved by complete resection. Although PGNT displayed indolent pathobiology, atypical appearances were observed. More patients and longer follow-up periods are needed to further elucidate the biological features of PGNTs.
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Affiliation(s)
- Da Li
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Tiantan Xili 6, Chongwen Distract, Beijing, 100050, People's Republic of China
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Portela-Oliveira E, Torres US, Lancellotti CLP, Souza AS, Ferraz-Filho JRL. Solid intraventricular papillary glioneuronal tumor: magnetic resonance imaging findings with histopathological correlation. Pediatr Neurol 2014; 50:199-200. [PMID: 24314675 DOI: 10.1016/j.pediatrneurol.2013.10.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Revised: 10/06/2013] [Accepted: 10/11/2013] [Indexed: 10/26/2022]
Affiliation(s)
- Eduardo Portela-Oliveira
- Department of Radiology, Hospital de Base, São José do Rio Preto Medical School, São José do Rio Preto, Brazil.
| | - Ulysses S Torres
- Department of Radiology, Hospital de Base, São José do Rio Preto Medical School, São José do Rio Preto, Brazil
| | | | - Antônio Soares Souza
- Department of Radiology, Hospital de Base, São José do Rio Preto Medical School, São José do Rio Preto, Brazil
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