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Meningioma - Europe PMC

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Last Updated: 24 July 2022

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Tumor Doubling Time as Preoperative Predictor of Malignancy and Recurrence in Newly Diagnosed Meningioma

The aim of this study was to determine whether Tumor doubling time is useful in predicting tumor prognosis. Patients were included in this study who underwent surgery for newly diagnosed meningioma at our hospital between 2007 and 2021, which was followed by preoperative magnetic resonance imaging analysis over a period of six months. Td from the preoperative MR images was determined and compared to Td's WHO score, MIB-1 SI, and other conditions. Td in patients with Td >= 3 years was higher in patients with Td >= 3 years than in those with Td >= 3, and the incidence of high WHO grade in patients with Td >=1 year was higher in patients with Td 1. 0 years than in patients with Td >= 3 years, despite Td >= 3 years. Conclusions Meningiomas with Td of fewer than three years had significantly elevated MIB-1 SI, while tumors with Td of fewer than one year had a higher risk of malignancy.

Source link: https://europepmc.org/article/PPR/PPR522007


Meningioma originating from the oculomotor nerve without dural attachment in a child.

Meningioma that arises from the oculomotor nerve without a dural attachment in children has been rare. For 5 years, a 6-year-old patient had ptosis of the right eye. During subsequent surgery, a tumor originating from the oculomotor nerve without dural attachment was discovered, which was confirmed as meningioma by pathology. Within the nerve sheath, the findings of this experiment showed that the mechanisms behind meningioma depend on ectopic arachnoid cap cells.

Source link: https://europepmc.org/article/MED/35861856


Acquired dural arteriovenous fistula after cerebellopontine angle meningioma: A case report.

Rationale etiologique Intracran brain surgeries, including ventriculostomy, burr hole, craniotomy, and craniectomy are among the most common causes of acquired dural arteriovenous fistula. We present a case of acquired dAVF following a cerebellopontine angle meningioma surgery. Patient issues A 51-year-old woman was diagnosed with a 40-mm cerebellopontine angle meningioma. Following a retrosigmoid craniotomy or craniectomy, Lessons Craniectomy defects, partially exposed sinuses, and incomplete cranioplasty could be risk factors for iatrogenic dAVF. Complete reconstructive cranioplasty is an important procedure to avoid a direct connection between the venous sinus and the external carotid artery.

Source link: https://europepmc.org/article/MED/35839051


Lateral cervical approach for ventrally located upper cervical meningioma: experience of 14 cases with a narrative comparison with other surgical techniques.

Background Upper cervical meningioma accounts for a significant proportion of intradural extradural tumors that occur in the cervical spinal canal. Objectives The most effective route to ventrally located upper cervical lesions remains to be contentious. The aim of this research was to investigate the use of the lateral cervical approach and compare it to other surgical routes. Methods This retrospective review was conducted on all cases of ventrally located upper cervical meningiomas that had been treated with the lateral cervical approach in a tertiary neurosurgery unit between 2006 and 2020. Results During the study period, fourteen patients were recruited. Neck pain, occipital headache, motor deficits, and sensory disturbances were the most common presentation signs. Both patients with preoperative motor deficits recovered quickly postoperatively, and those with sensory disorders had partial recovery. Conclusions A lateral cervical approach is a safe option for ventrally located upper cervical lesions.

Source link: https://europepmc.org/article/MED/35815394


Recognizing and Distinguising the Phenomenon Referred to as Meningioma

It was therefore timely to reexamine meningiomas' nature and derive standards for their inclusion in the archeological record and distinguish them from hemangiomas and bone marrow hyperplasia. Methods: A medically supported series of meningiomas, hemangiomas, and cranial bone marrow hyperplasia were investigated in order to establish a macroscopic standard for distinguishing among them. Meningiomas: An en face mesh with embedded whorls seems to be pathognomonic for meningiomas. In porotic hyperostosis and non-uniform vascular displacement of trabeculae in hemangiomas, there is no comparison between the non-uniform marrow expansion displacement of trabeculae in porotic hyperostosis and non-uniform vascular displacement of trabeculae. Conclusions: The use of hemangiomas, bone marrow hyperplasia, and from osteosarcoma-specific surface spicules is described in osteosarcomas. In addition, confidence in recognizing porotic hyperostosis may be harmed by apparent similar macroscopic changes to those observed with hemangiomas.

Source link: https://europepmc.org/article/PPR/PPR519531


Risk factors influencing cerebral venous infarction after meningioma resection.

BACKGROUNDENCE Before meningioma resection, cerebral venous infarction is a significant complication. Large samples can determine the risk factors of postoperative cerebral venous infarction after surgical resection of meningioma, and this research will add to the literature. Methods The clinical and imaging records of 1127 patients with intracranial meningiomas who underwent resection in our hospital were retrospectively collected and analyzed. After meningioma resection, 4. 7% of patients received CVI.

Source link: https://europepmc.org/article/MED/35831795


A radiomics nomogram for predicting the meningioma grade based on enhanced T 1 WI images.

Objects of this study The aim of this research was to create a radiomics nomogram for predicting the meningioma grade based on improved T 1 weighted imaging images. Methods 188 patients with meningioma were retrospectively reviewed. 94 high-grade meningioma was chosen randomly to form a high-grade group, and 94 low-grade meningioma were selected randomly to form a low-grade group. The area under the receiver operator characteristic curve of a clinical model was 0. 870 square miles. The AUC of radiomics nomogram was 0. 952 a year ago. With a significant difference, the AUC of radiomics nomogram was higher than that of both the clinical model and radiomics signature, which made a significant difference. The decision curve analysis curve revealed that the radiomics nomogram had a higher net benefit than the clinical model and radiomics signature. Conclusion The radiomics nomogram based on improved T1 weighted imaging images for predicting the meningioma grade had a high predictive value and could be useful in the diagnosis and treatment of meningioma.

Source link: https://europepmc.org/article/MED/35816518


Strongyloides hyperinfection syndrome due to corticosteroid therapy after resection of meningioma: illustrative case.

Strongyloidiasis is underdiagnosed and avoidable disease associated with the helminth Strongyloides stercoralis bacteria. Chronic asymptomatic disease can be present for decades, and immunosuppression can result in disseminated infection, with a mortality rate of 70% to 90%. Observations The authors discuss a 33-year-old woman of Paragua who was diagnosed with sphenoid planum meningioma and treated with a high dose of corticosteroids as a result of her illness. Lessons It may be in your best interest to rule out a chronic Strongyloides disease in patients from risk areas before starting corticosteroids therapy.

Source link: https://europepmc.org/article/MED/35855010


Modified retrosigmoid extended approach to jugular tubercle meningioma: A video abstract.

Background Description Primary jugular fossa meningiomas are one of the fewest subgroups of meningioma, with an estimated prevalence of 0. 7 percent of all skull base meningiomas. To date, only 145 cases of jugular foramen meningomas have been identified in the literature. While meningiomas in this area are traditionally described as "jugular foramen meningiomas," we're able to distinguish between meningiomas that result directly from the foramen itself and those that arise from the jugular tubercle. The jugular tubercle, which covers the hypoglossal canal and is often crossed by an oblique groove for the glossopharyngeal, vagus, and accessory nerves, is the upper surface of the occipital bone's lateral portions of occipital bone's lateral layers. The aim of this video story is to discuss the surgical approach taken by the senior author to uncover lesion involving the jugular tubercle. Jugular tubercle meningiomas are one of the few subgroups of meningioma.

Source link: https://europepmc.org/article/MED/35855117


MRI data harmonization across sites using ComBat enhances classification of meningioma and glioma brain-tumors in dogs: a case study

Background: Magnetic resonance imaging in clinical patients is often used for diagnostic purposes. Methods: In this paper, we present the results of ComBat harmonization of heterogeneous MRI results on dogs and u2019 brains, collected at various locations, before using them in the random forest classifier to determine the meningioma and the glioma tumor types. We compare the RF classifier's results in identifying the two tumor types, with and without preprocessing the data with ComBat site-specific harmonization. Moreover, including both the image variables and the clinical covariates in the RF model results in the highest total accuracy. Result: In determining meningioma and glioma brain tumors in dogs, using MRI data in combination with clinical covariates is more informative than using only clinical covariates.

Source link: https://europepmc.org/article/PPR/PPR514354

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions