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Extra-Axial Anaplastic Pleomorphic Xanthoastrocytoma Mimicking Meningioma: A Case Report with Literature Review

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Open Journal of Modern Neurosurgery 2024年第3期14卷 203-211页

Background: A number of meningeal neoplastic lesions may radiologically and clinically simulate meningioma, include hemangiopericytomas, solitary fibrous tumors, schwannomas, hematolymphoid lesions, metastases, and others very rarely, also may clinically mimic meningiomas. Case Description: We present the case of A 28-year-old male patient, with no notable medical history, who presented with worsening headaches for 3 months, imbalance, and visual deficits, An initial MRI revealed extra-axial lesion involving the right Parieto-occipital, The tumor was hypointense on T1-weighted MR images, hyperintense signals on T2-weightedMR images, and heterogeneously enhanced suggestive of a meningioma, total resection was achieved, and the histopathological analysis confirmed the diagnosis of an angioblastic meningioma. However, 15 months later, the patient presented with the same initial visual complaints. A subsequent MRI showed lesion recurrence, leading to a second surgical intervention. The histopathological analysis confirmed the diagnosis of an anaplastic xanthoastrocytoma. Conclusion: This represents an unusual location for an anaplastic pleomorphic xanthoastrocytoma, which should broaden the differential diagnosis of extra-axial lesions.

关键词： Anaplastic Features BRAF Extra-Axial High Mitotic Rate High Proliferation Index Meningeal Pleomorphic Xanthoastrocytoma

Primary Multiple Cerebral Hydatid Cyst in 8 Year-Old Girl: A Rare Cause of Childhood Seizure

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Extra-Axial Anaplastic Pleomorphic Xanthoastrocytoma Mimicking Meningioma:A Case Report with Literature Review

Open Journal of Modern Neurosurgery（现代神经外科学进展） 2024年第2期 149页

作者： Kaoutar Stitou Ilias Zahir Oualid mohammed Hmamouche Marouane Hammoud Faycal Lakhdar mohammed Benzagmout Khalid Chakour mohammed el faiz chaoui

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Lumbar Artery Pseudo-Aneurysm after Spinal Trauma and Transpedicular Fixation: A Case Report

Open Journal of Modern Neurosurgery（现代神经外科学进展） 2024年第3期 203页

作者： Kaoutar Stitou Ilias Zahir Oualid mohammed Hmamouche Marouane Hammoud Faycal Lakhdar mohammed Benzagmout Khalid Chakour mohammed el faiz chaoui

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Open Journal of Modern Neurosurgery 2021年第2期11卷 65-72页

作者： Armel Junior Tokpo Guelord Metre Mpambia Fayçal Lakhdar Hassan Amadou Ali Oualid mohammed Hmamouche mohammed Benzagmout Khalid Chakour mohammed el faiz chaoui Teaching Hospital of Hassan 2 Fès Morocco

Introduction: A case of lumbar artery pseudo-aneurysm after surgery for lumbar vertebra burst fracture is presented. Only two cases secondary to spinal trauma and revealed after surgery have been described in the literature. A review of literature was conducted and a possible relationship with burst fracture or reduction maneuvers was discussed. Case Presentation: Here, we report a post traumatic lumbar burst facture with incomplete motor deficit of lower limbs after a fall. Surgical reduction and stabilization via posterior approach were performed. Post-operatively, a hemorrhage through surgical wound had been noticed. Pseudo-aneurysm of the lumbar artery at L3 level was diagnosed and embolisation was performed. Conclusion: This is a rare case of pseudo-aneurysm occurring in the setting of surgical stabilisation after a trauma. It was revealed by a hemorrhage discovered as a late complication. We should be aware of such potential complication as a delayed post surgery event in order to adapt the care.

关键词： Pseudo-Aneurysm Lumbar Spine Burst Fracture Embolisation

Pachymeningeal en Plaque Tuberculoma in Children: A Case Report

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Open Journal of Modern Neurosurgery 2020年第1期10卷 63-69页

作者： Ibrahima Berete Alpha Boubacar Bah Seylan Diawara mohammed Benzagmout Khalid Chakour mohammed faiz chaoui Service de Neurochirurgie CHU Hassan II Fès Morocco Service de Neurochirurgie CHU Donka Conakry Guinea

Pachymeningeal en plaque tuberculoma is a rare manifestation of tuberculosis and has a poor prognosis if not diagnosed early and treated adequately. The aim of the present paper is to collect the reported clinical and radiological signs in the literature and compare it with a personal observation to evaluate the possibility of a presumptive diagnosis. A 4-year-old boy presented at the pediatric emergency department with 7 days history of severe headache, vomiting blurred vision and had one partial seizure. His neurologic examination was notable for decreased visual acuity with bilateral papilledema and intact extra-ocular muscles. His neck was rigid. Neuroimaging revealed a multifocal dural-based mass on the fronto-parietal convexity with dense heterogeneous contrast enhancement and hydrocephalus. He has undergone a Ventriculoperitoneal shunt and surgical excision of the mass the next day. Outcome was favorable with antituberculosis therapy and corticosteroids. The clinical presentation and outcome were similar to the reported cases in the literature.

关键词： Tuberculoma Pachymeningeal Intracranial Tuberculosis MRI CT Scan

Extradural Hemangioma of Thoracic Spine

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Open Journal of Modern Neurosurgery 2014年第4期4卷 190-192页

作者： Mohamed Aggouri Ibrahima Berete Meryem Himmich Khalid Chakour chaoui Mohamed el faiz chaoui Department of Neurosurgery University Hospital Hassan II-Fez Fez Morocco

A 50-year-old woman presented with mid-thoracic backache and progressive, spastic, paraparesis for 3 months. Magnetic resonance imaging revealed an epidural mass without bone lesion at the level of thoracic vertebrae (T7, T8 and T9). The mass had a paraspinal invasion. The spinal cord was compressed ventrally. The lesion was totally excised through an anterolateral transthoracic approach. Histopathological examination revealed a cavernous hemangioma. The patient improved dramatically after the excision of the lesion. We report this case for its rarity.

关键词： Cavernous Hemangioma Epidural Magnetic Resonance Imaging Myelopathy Thoracic Spine

Identification of Hammerstein-Wiener model with discontinuous input nonlinearity

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Science China(Information Sciences) 2023年第12期66卷 33-47页

作者： A.BROURI F.Z.el MANSOURI F.Z.chaoui C.ABDelAALI F.GIRI ENSAM Moulay Ismail University ENSAM University Mohammed V Normandie Universite

This paper deals with the identification of Hammerstein-Wiener models with an irregular function in the input block. These models comprise a set of linear segments. The linear time invariant(LTI) block may be parametric or nonparametric. The nonlinearity of the output can be any continuous function of arbitrary shape; it is not necessarily assumed to be invertible. Subsequently, sine inputs will be used to identify the system parameters. First, the output nonlinearity is determined by filtering the system output and varying the phase of a given reference sine signal; second, the parameters of the linear block can be determined for any frequency; and finally, the input nonlinearity can be obtained by changing the offset and amplitude of the input sine signal.

关键词： nonlinear systems nonlinear systems identification Hammerstein-Wiener models discontinuous nonlinearities hard nonlinearities

Adult Posterior Cranial Fossa Arachnoid Cyst: A Case Report

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Open Journal of Modern Neurosurgery 2019年第4期9卷 436-440页

作者： Ibrahima Berete Alpha Boubacar Bah Hammas Nawal mohammed Benzagmout Khalid Chakour faiz chaoui Department of Neurosurgery CHU de Donka Conakry Guinea Department of Pathology Hassan II Teaching Hospial Fez Morocco Department of Neurosurgery Hassan II Teaching Hospital Fez Morocco

Adult posterior fossa arachnoid cysts are rare lesions that are considered to be mostly congenital in origin. We present 49-year-old man admitted with a chief complaint of tremor and balance problems for the past 2 months. He had ataxia on examination. Magnetic resonance imaging revealed a well circumscribed midline cystic lesion of the posterior fossa sharing the same signal characteristics as cerebrospinal fluid and non-communicating to the fourth ventricle. He underwent surgical treatment for his symptomatic posterior fossa arachnoid cyst with a good outcome at 2 years follow up.

关键词： Posterior Fossa Arachnoid Cyst Subocciptal Craniotomy Cerebellar Ataxia

Lipomatous Medulloblastoma: A Case Report

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Open Journal of Modern Neurosurgery 2019年第4期9卷 452-456页

作者： Ibrahima Berete Alpha Boubacar Bah Seylan Diawara Hammas Nawal mohammed Benzagmout Khalid Chakour mohammed faiz chaoui Department of Neurosurgery University Hospital Donka Conakry Guinea Department of Pathology University Hospital Hassan II Fez Morocco Department of Neurosurgery University Hospital Hassan II Fez Morocco

Lipomatous medulloblastoma is not a separate entity but apparently distinct variant of medulloblastoma. Since the first case report in 1978 by Bechtel et al. [1], few cases have been published. We report an additional case of a 52-year-old right-handed man presented to the emergency department with evaluation of progressive severe intracranial hypertension and ataxia. His past medical history was unremarkable. His physical examination showed cerebellar syndromes. He underwent magnetic resonance imaging (MRI) which revealed a unique mass in the posterior fossa, lying within a cerebellar hemisphere. The patient underwent a suboccipital craniotomy for with a complete resection and samples were sent for histologic examination, showing closely packed, and round to oval cells. The nuclei had an irregular shape with clumps of heterochromatin. Lipid accumulation was a prominent feature of neoplastic cells. Postoperatively the patient did not receive fractionated radiotherapy. He is alive without deficit and with no evidence of recurrence on neuroimaging.

关键词： Medulloblastoma Lipomatous Liponeurocytoma Posterior Fossa Tumor Suboccipital Craniotomy