Central Neurocytoma and Extraventricular Neurocytoma

2009 ◽  
pp. 193-197
Author(s):  
Adekunle M. Adesina ◽  
Ronald A. Rauch
Keyword(s):  
Central Neurocytoma ◽  
Extraventricular Neurocytoma

scholarly journals Extraventricular Neurocytoma

2012 ◽  
Vol 52 (188) ◽  
Author(s):  
B Karki ◽  
K Tamrakar ◽  
Xu Yi Kai ◽  
Wu Yuan Kui ◽  
Zhang Wei Wei
Keyword(s):  
Computed Tomography ◽  
Frontal Lobe ◽  
Cerebral Hemisphere ◽  
Parietal Lobe ◽  
Central Neurocytoma ◽  
Extraventricular Neurocytoma ◽  
Cystic Component ◽  
The Right ◽  
T2 Weighted Images

Extraventricular neurocytoma (EVN) is a rare neuroepithelial tumor. Its propensity to occur in cerebral hemisphere is much higher. EVN has a histological resemblance to central neurocytoma but radiologically, it is more complex. Ganglionic differentiation is more common in EVN and tends to have more of a cystic component. Calcification is frequent but hemorrhage is only an occasional finding. Although it has been reported to occur in various regions, the propensity to occur in cerebral hemisphere is much higher. Herein, we report two cases which presented as a mass in the right frontal lobe and right parietal lobe. MRI showed hypointesity on T1, hyperintesity on T2-weighted images with moderate enhancement after contast injection. In short extraventricular neurocytoma should be considered indifferential diagnosis of complex intracranial masses.  Keywords: central neurocytoma; computed tomography; xtraventricular neurocytoma; MagneticResonance Imaging.

scholarly journals A rare diagnosis of an extraventricular neurocytoma

2021 ◽  
Vol 12 ◽  
pp. 88
Author(s):  
Claudia Gaggiotti ◽  
Giuseppe Roberto Giammalva ◽  
Marco Raimondi ◽  
Ada Maria Florena ◽  
Rosa Maria Gerardi ◽  
...  
Keyword(s):  
Central Neurocytoma ◽  
Speech Disorders ◽  
World Health ◽  
Communicating Hydrocephalus ◽  
Ki 67 ◽  
Extraventricular Neurocytoma ◽  
Perilesional Edema ◽  
History Of ◽  
The Central Nervous System ◽  
Health Organization

Background: Extraventricular neurocytoma (EVN) is an extremely rare neoplasm of the central nervous system. As reported, it arises in a variety of locations, but mainly within the cerebral hemispheres. Despite its histological similarity with central neurocytoma (CN), EVN occurs outside the ventricular system and, in 2007, was recognized by the World Health Organization as a separate entity. Case Description: A 39-year-old man, with a ventriculoperitoneal shunt inserted for communicating hydrocephalus, was admitted at our Unit of Neurosurgery with a 1-month history of gait disturbance, postural instability, speech disorders, and occasional incontinence. Computed tomography scan and magnetic resonance imaging showed a mixed-density neoplasm in the left frontotemporal area, with anterior cerebral falx shift, and perilesional edema. The patient underwent surgical procedure; microsurgical excision of the lesion was performed through left pterional approach. Histopathological and immunohistochemical examination revealed monomorphic round cells of the neuronal lineage, with a percentage of Ki-67 positive nuclei <5% and no evidence of mitosis or necrotic areas. According to radiologic features, this pattern was compatible with the diagnosis of EVN. Patient had a favorable recovery and he is still in follow-up. Conclusion: Because of their rarity, clinical, radiologic, and histopathological characteristics of EVNs are not yet well defined, as well as the optimal therapeutic management. Whereas EVNs are rarely described in literature, we aimed to share and discuss our experience along with a review of the published literature.

Central Neurocytoma and Extraventricular Neurocytoma

2016 ◽  
pp. 195-199 ◽  
Author(s):  
Carrie A. Mohila ◽  
Ronald A. Rauch ◽  
Adekunle M. Adesina
Keyword(s):  
Central Neurocytoma ◽  
Extraventricular Neurocytoma

Comprehensive review of extraventricular neurocytoma with report of two cases, and comparison with central neurocytoma

2010 ◽  
Vol 29 (05) ◽  
pp. 134-140 ◽  
Author(s):  
A. Furtado ◽  
M. Arantes ◽  
R. Silva ◽  
H. Romao ◽  
M. Resende ◽  
...  
Keyword(s):  
Central Neurocytoma ◽  
Extraventricular Neurocytoma ◽  
Comprehensive Review

Neuronal and mixed neuronal–glial tumours

2017 ◽  
Author(s):  
Riccardo Soffietti ◽  
Hugues Duffau ◽  
Glenn Bauman ◽  
David Walker
Keyword(s):  
Conformal Radiotherapy ◽  
Central Neurocytoma ◽  
World Health ◽  
Extraventricular Neurocytoma ◽  
Molecular Alterations ◽  
Desmoplastic Infantile Astrocytoma ◽  
Intractable Seizures ◽  
Rare Tumours ◽  
Health Organization ◽  
Multiple Recurrences

Neuronal and mixed neuronal-glial tumours are rare tumours of the central nervous system that occur more commonly in children. Despite a generally benign course, most tumours cause medically intractable seizures, and have been denominated as ‘long-term epilepsy-associated tumours’. The World Health Organization classification distinguishes nine histological variants: dysplastic gangliocytoma of the cerebellum/Lhermitte–Duclos disease, desmoplastic infantile astrocytoma and ganglioglioma, dysembryoplastic neuroepithelial tumour, gangliocytoma and ganglioglioma, central neurocytoma and extraventricular neurocytoma, cerebellar liponeurocytoma, papillary glioneuronal tumour, rosette-forming glioneuronal tumour of the fourth ventricle, and spinal paraganglioma. Early surgery with complete resection may significantly improve the likelihood of postoperative epilepsy freedom. Conformal radiotherapy can be considered in case of patients with incompletely resected symptomatic tumours, atypical or high-grade tumours, or in the case of multiple recurrences despite resections. The role of chemotherapy in these lesions remains poorly defined, while targeted therapies are now available to impact some molecular alterations.

scholarly journals A cerebellar neurocytoma with an excellent response to radiotherapy: a case report

2020 ◽  
Author(s):  
Siwei Chen ◽  
Hongzhou Duan ◽  
Ran Liu ◽  
Jingjing Luo ◽  
Hui Wang ◽  
...  
Keyword(s):  
Case Report ◽  
Central Neurocytoma ◽  
Brain Parenchyma ◽  
Favourable Outcome ◽  
Ventricular System ◽  
Extraventricular Neurocytoma ◽  
Excellent Response ◽  
Favourable Prognosis ◽  
The Brain

Abstract Background: Extraventricular neurocytoma (EVN) is a rare central neurocytoma with neoplasms occurring in the brain parenchyma outside the ventricular system with similar biological behaviours and histopathological characteristics. Cases of EVN reported in the brainstem and cerebellum are fairly rare. In addition, very few cases with radiotherapy as the only treatment have been reported, and their outcomes were unclear.Case presentation: We reported an EVN of the brainstem and cerebellum confirmed by pathology in a 43-year-old male presenting with unprovoked nausea and dizziness. The patient showed a favourable outcome with only radiotherapy during the 2-year follow-up.Conclusions: Patients who have EVN may have a favourable prognosis with radiotherapy without surgery.

Neuroradiology case of the day. Central neurocytoma.

1991 ◽  
Vol 156 (6) ◽  
pp. 1311-1313 ◽  
Author(s):  
D R Parker
Keyword(s):  
Central Neurocytoma
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