Publications by authors named "Charles-Henry Mallereau"

The urgent etiological diagnosis represents the main management objective of cervical spondylodiscitis (CSD) to start as soon as possible antibiotic treatment to prevent neurological deterioration. The present study aimed to evaluate a multicenter experience implementing a minimally invasive surgical approach (MISA) to manage CSD such pathology vs the most complex and aggressive surgical strategies currently used.This retrospective multicenter study used a database of 70 patients from five European neurosurgical centers.

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Purpose: Neurocytomas represent 0.25 to 0.5% of primary brain tumours and are mainly found in young adults.

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Background: Superficial siderosis (SS) of the central nervous system is a rare disease characterized by deposition of hemosiderin along the leptomeninges due to chronic or recurrent bleeding into the subarachnoid space. The association of unruptured intracranial aneurysm (IA) and cortical SS is quite rare.

Methods: A systematic literature review to assess possible commonalities and/or differences of previous reported cases was undertaken.

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: The global outbreak caused by the SARS-CoV-2 pandemic disrupted healthcare worldwide, impacting the organization of intensive care units and surgical care units. This study aimed to document the daily neurosurgical activity in Alsace, France, one of the European epicenters of the pandemic, and provide evidence of the adaptive strategies deployed during such a critical time for healthcare services. : The multicentric longitudinal study was based on a prospective cohort of patients requiring neurosurgical care in the Neurosurgical Departments of Alsace, France, between March 2020 and March 2022.

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Article Synopsis
  • Visual dysfunction is common in patients with non-functioning pituitary macroadenoma, yet the effectiveness of Optical Coherence Tomography (OCT) in assessing this issue remains unclear.
  • A 6-year study involving 20 patients aimed to evaluate the impact of NFPM on neuro-axonal loss by measuring retinal nerve fiber layer (RNFL) thickness over time and analyzing the relationship between OCT changes and optic chiasm compression.
  • Findings showed that 40% of patients had RNFL alterations at diagnosis, and 20% experienced thickness reduction during follow-up, but overall visual acuity and field remained stable, indicating OCT may not reliably predict visual dysfunction in these cases.
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Hemorrhagic complications arising from ventricular drainage procedures are typically asymptomatic and of low volume. A particular subset of these complications, known as delayed intracranial hemorrhage (DICH), is however recognized for its particularly poor prognosis. We primarily aimed to identify epidemiological characteristics associated with DICH, to shed light on its occurrence and potential risk factors.

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Background: Glioblastoma (GBM) is a malignant primary brain cancer, among the most devastating and lethal diseases of the central nervous system. Similarly, malignant melanoma (MM) is responsible for most skin cancer-related deaths. A link between those 2 aggressive cancers has not yet been established.

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Background: Lesions of the foramen magnum (FM) and craniocervical junction area are traditionally managed surgically through anterior, anterolateral, and posterolateral skull-base approaches. This anatomical study aimed to compare the usefulness of a modified extended endoscopic approach, the so-called far-medial endonasal approach (FMEA), versus the traditional posterolateral far-lateral approach (FLA).

Methods: Ten fixed silicon-injected heads specimens were used in the Skull Base ENT-Neurosurgery Laboratory of the University Hospital of Strasbourg, France.

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Background: Basilar invagination (BI) is an uncommon clinical condition of the craniocervical junction (CCJ). Surgical management depends on 2 factors: mobility and reducibility; in cases of irreducible dislocation or persistent compression, odontoidectomy should be considered.

Case Discussion: We present the case of a 13-year-old boy with severe BI, causing cervical myelopathy with progressive gait disorder.

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Article Synopsis
  • Ruptured middle cerebral artery aneurysms (MCAa) can cause serious brain bleeding (intracerebral hematoma), and the study aimed to compare the outcomes of two treatments: microsurgery (clipping) and endovascular therapy (EVT).
  • The research involved 162 adult patients who needed evacuation of intracerebral hematoma across nine hospitals in France, analyzing factors linked to recovery using a standard scale (modified Rankin scale) after six months.
  • Results showed that clipping was associated with better functional outcomes (30% poor outcome rate) compared to EVT (76% poor outcome rate), potentially due to longer delays in treatment for the EVT group.
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Pituitary abscess (PA) is a rare occurrence, representing less than 1% of pituitary lesions, and is defined by the presence of an infected purulent collection within the sella turcica. Pas can be classified as either primary, when the underlying pituitary is normal prior to infection, or secondary, when there is associated a pre-existing sellar pathology (i.e.

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Objective: Variations of the cavernous Internal Carotid Artery (ICA) angulation (C4-bend) have been classified into 4 anatomical subtypes with particular surgical relevance, as a very angulated ICA comes in closest contact with the pituitary gland leading to higher risk of iatrogenic vascular injury. This study aimed to validate this classification using current routine imaging techniques.

Methods: The different cavernous ICA bending angles were measured on 109 MRI TOF sequences, within a retrospective database of patients with no sellar lesions.

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Surgical access to the temporo-mesial area may be achieved by several routes such as the sub-temporal, the temporal trans-ventricular, the pterional/trans-sylvian, and the occipital interhemispheric approaches; nonetheless, none of them has shown to be superior to the others. The supra-cerebellar trans-tentorial approach allows a great exposure of the middle and posterior temporo-mesial region, while avoiding temporal lobe retraction. A prospective multicenter study was designed to collect data on patients undergoing endoscopic-enhanced SCTT approach to excise left temporo-mesial lesions.

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Article Synopsis
  • Acquiring skills in microsurgical anastomosis is difficult for trainees, but laboratory simulation models help them practice these techniques before real surgeries.
  • A study analyzed 44 trainees over 7 months, focusing on end-to-end and end-to-side anastomoses on rats, revealing a 41% patency rate and a decrease in dissection and clamping times as training progressed.
  • Key findings highlighted that the duration of training and technical mistakes significantly impacted the learning curve, suggesting further research is needed on factors affecting long-term skill retention in microsurgery.
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Introduction: A 12-year long, prospective, single center study was conducted, comparing two frameless systems for brain biopsies: ROSA robotic-assisted stereotaxy and BrainLab Varioguide image-guided stereotaxy (Image Guided Surgery, IGS).

Method: All consecutive adult and pediatric patients undergoing frameless brain biopsies were included. Successfully achieving diagnosis was the primary endpoint, analysis of all periprocedural complications was the secondary endpoint, and the tertiary endpoint was the length of the procedure, with the aim of assessing of the learning curve for each operator over time.

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Glioblastoma is the most common primary malignant brain tumor with an incidence of 5/100,000 inhabitants/year and a 5-year survival rate of 6.8%. Despite recent advances in the molecular biology understanding of glioblastoma, CNS chemotherapy remains challenging because of the impermeable blood-brain barrier (BBB).

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Purpose: To evaluate factors influencing clinical and radiological outcome of extended endoscopic endonasal transtuberculum/transplanum approach (EEA-TTP) for giant pituitary adenomas (GPAs).

Methods: We recruited prospectively all consecutive GPAs patients undergoing EEA-TTP between 2015 and 2019 in 5 neurosurgical centers. Preoperative clinical and radiologic features, visual and hormonal outcomes, extent of resection (EoR), complications and recurrence rates were recorded and analyzed.

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Odontoid fractures constitute the most common cervical fractures in elderly. External immobilization is the treatment of choice for Type I and III; there is still no wide consensus about the best management of Type II fractures. Observational multicenter study was conducted on a prospectively built database on elderly patients (> 75 years) with Type II odontoid fracture managed conservatively during the last 10 years.

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Purpose: Meningiomas represent the most frequent tumor of the central nervous system in adults. While most meningiomas are efficiently treated by surgery and radiotherapy/radiosurgery, there is a small portion of radiation- and surgery-refractory tumors for which there is no clear recommendation for optimal management. The French National Tumor Board Meeting on Meningiomas (NTBM) offers a glimpse on the current management of such patients.

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Objective: The treatment strategy for thoracolumbar burst fractures is still debated. The aim of this study is to evaluate clinical and radiologic outcomes of a 2-stage strategy with immediate posterior percutaneous instrumentation and delayed anterolateral fusion (group A) versus a single-stage open posterior instrumented fusion (group B).

Methods: Demographics and clinical and surgical data of patients operated for AO Spine A3 and A4 fractures were prospectively collected.

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Background: Rhabdomyosarcoma is a rare malignant tumor originating from striated muscle cells. It accounts for only 3% of all soft tissue sarcomas in adults, and its metastases can also reach the central nervous system. Only sporadic cases of primary brain rhabdomyosarcoma (PBRMS) have been reported so far.

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