Publications by authors named "Wendy J Sherman"

Background And Objectives: Despite standard of care with maximal safe resection and chemoradiation, glioblastoma is the most common and aggressive type of primary brain cancer. Surgical resection provides a window of opportunity to locally treat gliomas while the patient is recovering, and before initiating concomitant chemoradiation. To assess the safety and establish the maximum tolerated dose of adipose-derived mesenchymal stem cells (AMSCs) for the treatment of recurrent glioblastoma (GBM).

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Purpose: High-grade gliomas (HGG) are aggressive cancers, and their recurrence is inevitable, despite advances in treatment options. While repeated tumor resection has been shown to increase survival rate, its impact on quality of life is not clearly defined. To address this gap, we compared quality of life (QoL) changes in HGG patients who underwent first-time (FTR) versus repeat surgical resections (RSR) for management of recurrence.

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Melanoma has a high propensity to metastasize to the brain which portends a poorer prognosis. With advanced radiation techniques and targeted therapies, outcomes however are improving. Melanoma brain metastases are best managed in a multi-disciplinary approach, including medical oncologists, neuro-oncologists, radiation oncologists, and neurosurgeons.

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Objective: Awake craniotomy with electrocorticography (ECoG) and direct electrical stimulation (DES) facilitates lesionectomy while avoiding adverse effects. Early postoperative seizures (EPS), occurring within 7 days following surgery, can lead to morbidity. However, risk factors for EPS after awake craniotomy including clinical and ECoG data are not well defined.

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Intraoperative electrocorticography (iECoG) is used as an adjunct to localize the epileptogenic zone during surgical resection of brain tumors in patients with focal epilepsies. It also enables monitoring of after-discharges and seizures with EEG during functional brain mapping with electrical stimulation. When seizures or after-discharges are present, they complicate accurate interpretation of the mapping strategy to outline the brain's eloquent function and can affect the surgical procedure.

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Objective: Due to the increased demand for palliative care (PC) in recent years, a model has been proposed to divide PC into primary PC and specialist PC. This article aimed to delineate the indications for primary and specialist PC within 2 common neurosurgical conditions-glioblastoma (GBM) and stroke.

Methods: A systematic review and bibliometric analysis was conducted to better appreciate the practice trends in PC utilization for GBM and stroke patients using several databases.

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Objective: To identify risk factors for developing glioblastoma (GBM) related preoperative (PRS) and postoperative seizures (POS). Also, we aimed to analyze the impact of PRS and POS on survival in a GBM cohort according to the revised 2021 WHO glioma classification.

Methods: We performed a single-center retrospective cohort study of patients with GBM (according to the 2021 World Health Organization Classification) treated at Mayo Clinic Florida between January 2018 and July 2022.

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Article Synopsis
  • Leptomeningeal carcinomatosis (LMC) is a severe complication in 5-15% of stage IV cancer patients, currently having a poor median overall survival of 2-6 months due to ineffective treatments.
  • A systematic review analyzed 43 clinical trials from 1982-2022, finding that most were non-randomized and focused on various primary tumors, with a significant number closing due to low patient enrollment.
  • Intraventricular/intrathecal drug delivery was the most common treatment method, and findings indicate a need for a shift towards targeted systemic therapies to improve survival rates.
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Introduction: There is a general lack of consensus on both anatomic definition and function of Broca's area, often localized to the pars triangularis (pT) and pars opercularis (pOp) of the left inferior frontal gyrus (IFG). Given the belief that this region plays a critical role in expressive language functions, resective surgery is often avoided to preserve function. However, the putative role of Broca's area in speech production has been recently challenged.

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Article Synopsis
  • The study explores the recent changes in glioblastoma (GBM) classification, focusing on IDH-wildtype diffuse astrocytic tumors that can now be classified as molecular GBM (molGBM) based on specific genetic mutations.
  • Five patients diagnosed with molGBM were analyzed, revealing that while initial diagnoses lacked typical GBM features, the tumors developed these characteristics upon recurrence.
  • The findings suggest that molGBMs may represent early forms of GBM that progress to show classic symptoms, indicating a need for further research to validate this hypothesis.
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Purpose: Social determinants of health (SDoH)-socioeconomic and environmental factors-impact outcomes. The Area Deprivation Index (ADI), a composite of seventeen SDoH factors, has been correlated with poorer outcomes. We aimed to compare outcomes and treatment access for glioblastoma, a universally fatal malignant brain tumor, in patients more (ADI 34-100%) versus less disadvantaged (ADI 0-33%).

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Purpose Of Review: Patients with brain and spine tumors are at high risk of presenting cancer-related complications at disease presentation or during active treatment and are usually related to the type and location of the lesion. Here, we discuss presentation and management of the most common emergencies affecting patients with central nervous system neoplastic lesions.

Recent Findings: Tumor-related emergencies encompass complications in patients with central nervous system neoplasms, as well as neurologic complications in patients with systemic malignancies.

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Article Synopsis
  • The study investigates the survival outcomes of two types of glioblastoma: histological glioblastoma (histGBM) and molecular glioblastoma (molGBM) as defined by the 2021 WHO classification.
  • The research included 708 patients who underwent adjuvant chemoradiation, revealing that molGBM has a longer median progression-free survival (13 months) compared to histGBM (8 months), although overall survival rates were similar (21 months for histGBM and 26 months for molGBM).
  • Factors such as contrast enhancement on MRI and MGMT methylation status are important as they influence the clinical behavior and survival outcomes of molGBM patients.
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Article Synopsis
  • The study analyzed the impact of having multiple meningiomas (MMs) on progression-free survival (PFS) in patients with WHO grade I meningiomas by reviewing patient records from 2009 to 2020.
  • Results indicated that patients with multiple lesions had significantly shorter PFS and time to second intervention (TTSI) compared to those with a single lesion.
  • Additionally, the analysis found that having more meningiomas negatively affected PFS and TTSI, with notable differences in outcomes based on race, where African American patients showed poorer PFS compared to non-Hispanic White patients.
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Objective: High-grade spinal glioma (HGSG) is a rare but aggressive tumor that occurs in both adults and children. Histone H3 K27M mutation correlates with poor prognosis in children with diffuse midline glioma. However, the role of H3 K27M mutation in the prognosis of adults with HGSG remains unclear owing to the rarity of this mutation, conflicting reports, and the absence of multicenter studies on this topic.

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Lynch syndrome is an autosomal dominant disorder leading to cancer predisposition caused by mutations in mismatch repair genes. There is minimal published experience treating glioblastoma in patients with Lynch syndrome. We report a patient with Lynch syndrome who was initially diagnosed with a left occipital isocitrate dehydrogenase (IDH) wild-type glioblastoma.

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The efficacy of surgery and radiation has been well validated in the treatment of meningiomas, with efficacy depending on tumor pathology, size, symptomatology and rate of progression. The role of medical therapy has the least amount of data but is being increasingly investigated for tumors that are inoperable or those tumors that recur and/or progress despite standard therapy. In this review, current data on the use of chemotherapeutic agents in the management of meningiomas will be reviewed, including cytotoxic, biologic, targeted molecular and hormonal agents.

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