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Clin Neurol Neurosurg 2018 Dec 7;176:89-96. Epub 2018 Dec 7.

Departament of Neurology, Laboratory of Molecular and Cellular Biology, LIM15, Faculdade de Medicina, Universidade de São Paulo, SP, Brazil.

Meningiomas, tumors that originate from meningothelial cells, account for approximately 30% of all new diagnoses of central nervous system neoplasms. According to the 2016 WHO classification of central nervous system tumors meningiomas are classified into three grades: I, II, and III. Past studies have shown that the risk of meningiomas recurrence is strongly correlated with the molecular profile of the tumor. Read More

Diagn Cytopathol 2018 Dec 8. Epub 2018 Dec 8.

Department of Pathology and Clinical Laboratories, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan.

Ectopic meningioma is a generally rare type of benign tumor that very rarely occurs in the lung. Here, we report the cytological findings of a primary pulmonary meningioma with a particular focus on immunohistochemical (IHC) assessment. A healthy 60-year-old woman visited our hospital with an asymptomatic nodule in the right lower lung lobe. Read More

Oncoimmunology 2019 5;8(1):e1512943. Epub 2018 Sep 5.

Project neuroArm, Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.

Meningioma is the most common brain tumor in adults. Surgical resection remains the primary treatment. No chemotherapy exists. Read More

J Orthop Sci 2018 Dec 10. Epub 2018 Dec 10.

Department of Orthopedic Oncology, Changzheng Hospital, Navy Medical University, Fengyang Rd 415#, Huangpu District, Shanghai, China. Electronic address:

J Neurosurg 2018 Nov 1:1-9. Epub 2018 Nov 1.

OBJECTIVERecurrent meningiomas are primarily managed with radiation therapy or repeat resection. Surgical morbidity after reoperation for recurrent meningiomas is poorly understood. Thus, the objective of this study was to report surgical outcomes after reoperation for recurrent non-skull base meningiomas. Read More

J Neurosurg 2018 Nov 1:1-10. Epub 2018 Nov 1.

OBJECTIVETumors involving Meckel's cave remain extremely challenging because of the surrounding complex neurovascular structures and deep-seated location. The authors investigated a new minimal-access technique using the endoscopic transorbital approach (eTOA) through the superior eyelid crease to Meckel's cave and middle cranial fossa lesions and reviewed the most useful surgical procedures and pitfalls of this approach.METHODSBetween September 2016 and January 2018, the authors performed eTOA in 9 patients with tumors involving Meckel's cave and the middle cranial fossa. Read More

J Neurosurg Spine 2018 Dec 1:1-6. Epub 2018 Dec 1.

OBJECTIVESpinal meningiomas (sMNGs) are relatively rare in comparison to intracranial MNGs. sMNGs localized anterior to the denticulate ligament (aMNGs) represent a surgically challenging subgroup. A high perioperative complication rate due to the need for complex surgical approaches has been described. Read More

J Neurosurg 2018 Dec 1:1-3. Epub 2018 Dec 1.

J Neurosurg 2018 Dec;129(Suppl1):5-9

In order to determine what areas of research are a clinical priority, a small group of young Gamma Knife investigators was invited to attend a workshop discussion at the 19th International Leksell Gamma Knife Society Meeting. Two areas of interest and the need for future radiosurgical research involving multiple institutions were identified by the young investigators working group: 1) the development of additional imaging sequences to guide the understanding, treatment, and outcome tracking of diseases such as tremor, radiation necrosis, and AVM; and 2) trials to clarify the role of hypofractionation versus single-fraction radiosurgery in the treatment of large lesions such as brain metastases, postoperative cavities, and meningiomas. Read More

J Neurosurg 2018 Dec;129(Suppl1):31-37

OBJECTIVEThe goal of this study was to identify parameters from routine T1- and T2-weighted MR sequences and diffusion tensor imaging (DTI) that best predict the volumetric changes in a meningioma after treatment with Gamma Knife radiosurgery (GKRS).METHODSIn 32 patients with meningioma, routine MRI and DTI data were measured before GKRS. A total of 78 parameters derived from first-level texture analysis of the pretreatment MR images, including calculation of the mean, SD, 2. Read More

Cureus 2018 Oct 8;10(10):e3426. Epub 2018 Oct 8.

Radiation Oncology, University of Mississippi Medical Center, Jackson, USA.

Purpose The definition of radiotherapy target volume is a critical step in treatment planning for all tumor sites. Conventional magnetic resonance imaging (MRI) pulse sequences are used for the definition of the gross target volume (GTV) and the contouring of glioblastoma multiforme (GBM) and meningioma. We propose the use of multiparametric MRI combined with radiomic features to improve the texture-based differentiation of tumor from edema for GTV definition and to differentiate vasogenic from tumor cell infiltration edema. Read More

Oncotarget 2018 Nov 13;9(89):36012-36016. Epub 2018 Nov 13.

Department of Chest Surgery, Fukushima Medical University School of Medicine, Fukushima 960-1295, Japan.

Introduction: Minute Pulmonary Meningothelial-like Nodules (MPMNs) are usually detected incidentally adjacent to lung cancer tissue. The pathogenesis is unknown. MPMNs reportedly share the status of neurofibromatosis (NF)-2 gene with meningiomas of the central nervous system. Read More

Oncotarget 2018 Nov 13;9(89):35974-35982. Epub 2018 Nov 13.

Department of Neurosurgery, University Hospital Münster, Münster, North Rhine-Westphalia, Germany.

Brain invasion (BI) in meningiomas impacts WHO grading and therefore adjuvant treatment. However, BI is rare and neurosurgical sampling and neuropathological analyses are not standardised. Moreover, associations with imaging findings are sparsely known. Read More

Cesk Slov Oftalmol 2018 ;74(1):23-30

Introduction: Orbital meningioma treatment has achieved significant success over the last period. Primary optic nerve sheath meningiomas by the clinically progressive finding, but still persistent sufficient visual acuity, can be treated by fractionated stereotactic radiotherapy. Surgery is indicated for secondary meningiomas of the orbit. Read More

Clin Nucl Med 2019 Jan;44(1):e22-e23

Department of Neurosurgery, CHRU Cavale Blanche.

F-fluoroethyltyrosine (FET) is a well-established PET tracer for the imaging of cerebral gliomas. Recent studies reported interest in meningiomas. A study published by Cornelius et al concludes that FET PET may provide additional information for noninvasive grading of meningiomas. Read More

J Immunol Res 2018 12;2018:9084759. Epub 2018 Nov 12.

Nehme and Therese Tohme Multiple Sclerosis Center, American University of Beirut Medical Center, Beirut, Lebanon.

Objective: To evaluate the efficacy and safety of rituximab in multiple sclerosis in a clinical practice setting.

Methods: Clinical data for all adult patients with multiple sclerosis (MS) treated with off-label rituximab at a single MS center in Lebanon between March 2008 and April 2017 were retrospectively collected from medical charts. The main efficacy outcomes assessed were annualized relapse rate (ARR) and proportion of patients free from relapses, disability progression, or magnetic resonance imaging (MRI) activity. Read More

J Radiosurg SBRT 2018 ;5(4):269-276

Department of Radiation Oncology at the University of Cincinnati Barrett Cancer Center, 234 Goodman Street, Cincinnati, OH 45219, USA.

Purpose: Single-fraction stereotactic radiosurgery(SRS) for meningioma has high rates of symptomatic perilesional edema in some settings. Fractionated stereotactic radiosurgery(fSRS) could decrease edema rates while maintaining tumor control.

Methods And Materials: Patients at an institution were retrospectively reviewed(2013-2017). Read More

Surg Neurol Int 2018 2;9:226. Epub 2018 Nov 2.

Department of Neurosurgery, Ehime University School of Medicine, 454 Shitsukawa, Toon, Ehime 791-0295, Japan.

Background: Chordoid glioma of the third ventricle is a rare neuroepithelial tumor characterized by a unique histomorphology within the third ventricular region, but with radiological and histopathological features mimicking benign lesions such as meningioma. We report a case of chordoid glioma of the third ventricle and suggest a useful indicator for accurate diagnosis.

Case Description: A previously healthy 46-year-old woman was admitted to our hospital with mild headache. Read More

Cancer Treat Rev 2018 Dec 1;72:56-64. Epub 2018 Dec 1.

Radiation Oncology Department, Centre François Baclesse, Caen, France; Archade, Advanced Resource Center for Hadrontherapy in Europe, Caen, France; Normandy University, Université de Caen Basse Normandie, Caen, France; Laboratoire de Physique Corpusculaire, Caen, France.

Introduction: The depth-dose distribution of a proton beam, materialized by the Bragg peak makes it an attractive radiation modality as it reduces exposure of healthy tissues to radiations, compared with photon therapy Prominent indications, based on a long-standing experience are: intraocular melanomas, low-grade skull-base and spinal canal malignancies. However, many others potential indications are under investigations such as the benign morbid conditions that are compatible with an extended life-expectancy: low grade meningiomas, paragangliomas, pituitary adenomas, neurinomas craniopharyngioma or recurrent pleomorphic adenomas.

Materials: Given the radiation-induced risk of secondary cancer and the potential neurocognitive and functional alteration with photonic radiotherapy, we systematically analyzed the existing clinical literature about the use of proton therapy as an irradiation modality for cervical or intracranial benign tumors. Read More

World Neurosurg 2018 Dec 6. Epub 2018 Dec 6.

Department of Neurosurgery, Tokyo Medical University, #6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo 160-0023, Japan.

The combined transpetrosal approach enables wide exposure around the petroclival region by lifting of the middle fossa dura and cutting of the tentorium. However, interruption of the venous drainage on the middle skull base during the transpetrosal approach has been reported to lead to temporal lobe damage.(1,2) This video (Video 1) demonstrates a microsurgical technique for the preservation of various venous drainage in the middle fossa, including the sphenobasal and sphenopetrosal veins, during the combined transpetrosal approach for treatment of a petroclival meningioma. Read More

World Neurosurg 2018 Dec 5. Epub 2018 Dec 5.

Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam-si, Republic of Korea; Department of Neurosurgery, Seoul National University College of Medicine, Seoul, Republic of Korea. Electronic address:

Objective: We investigated seizure outcomes of patients with supratentorial meningiomas (ST-MNGs) treated with stereotactic radiosurgery (SRS).

Methods: One hundred and thirty-three patients with a total of 144 ST-MNGs, who were treated with SRS between 2009 and 2016, were included in this study. The mean age was 59. Read More

J Clin Neurosci 2018 Oct 24. Epub 2018 Oct 24.

Department of Radiation Oncology, Hôpital Pitié-Salpêtrière Charles Foix, APHP, Paris, France. Electronic address:

Meningiomas account for 30-35% of intracranial tumors. Grade I meningiomas are most common and carry the best prognosis. Grade II and III meningiomas are more aggressive and the outcomes after surgical resection alone remain unsatisfactory. Read More

World Neurosurg 2018 Dec 3. Epub 2018 Dec 3.

Department of Pathology, Faculty of Medicine Universitas Indonesia, Dr. Cipto Mangunkusumo General Hospital.

Brain Tumor Pathol 2018 Dec 5. Epub 2018 Dec 5.

Department of Pathology and Laboratory Medicine, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Ishikawa, 920-0293, Japan.

WHO grade II/III meningiomas recur frequently and there is currently no established molecular target therapy for meningioma. No previous studies have revealed the association between receptor tyrosine kinases (RTKs) and the recurrence of meningiomas. This study aims to elucidate the association between RTKs and the clinicopathological characteristics and recurrence of meningioma. Read More

Neurosurg Rev 2018 Dec 6. Epub 2018 Dec 6.

Department of Neurosurgery, University Medical Center Groningen, University of Groningen, Hanzeplein 1, P.O. Box 30.001, 9700 RB, Groningen, The Netherlands.

Surgical resections of meningiomas, the most common intracranial tumor in adults, can only be curative if radical resection is achieved. Potentially, the extent of resection could be improved, especially in complex and/or high-grade meningiomas by fluorescence-guided surgery using 5-aminolevulinic acid (5-ALA), indocyanine green (ICG), or fluorescein. This review aims to summarize and evaluate these fluorescence-guided meningioma surgery techniques. Read More

J Neurooncol 2018 Dec 1. Epub 2018 Dec 1.

Department of Neurosurgery, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL, 32224, USA.

Background: Mutations in the telomerase reverse transcriptase promoter (TERTp) region have been associated with worse prognosis in some cancers. Meningiomas are the most common type of primary central nervous tumors, and evaluation of the prognostic significance of TERTp mutations across the literature is lacking. The aim of this study was to pool all current evidence to assess for clinical relevance of TERTp mutations in meningioma and survival effect. Read More

Neurosurg Rev 2018 Dec 1. Epub 2018 Dec 1.

Department of Neurosurgery, International Neuroscience Institute, Rudolf Pichlmayr Str. 4, 30625, Hannover, Germany.

Foramen magnum meningiomas (FMMs) are challenging lesions and controversy still exists regarding their optimal management. In the present paper, we propose some principles of surgical treatment of FMMs. We analyzed our series of 39 patients: the average maximum diameter was 31. Read More

World Neurosurg 2018 Nov 29. Epub 2018 Nov 29.

Neurosurgery, School of Medicine. Electronic address:

Background: Meningiomas are heterogenous with differences in anatomical, histopathological and clinical characteristics. Such spatial variability in meningioma biology is thought to be due to differences in expression
of critical developmental regulators. We hypothesized that variability in meningioma biology follows gradients as in embryology and tested a cohort of 366 meningiomas for histopathological and immunohistochemical gradients. Read More

Neuropathology 2018 Dec 3. Epub 2018 Dec 3.

Biomedical and Odontoiatric Sciences, and of Morphological and Functional Images, University of Messina, Messina, Italy.

Due to their widely variable clinical behavior, the post-surgical treatment of atypical meningiomas is controversial. Therefore, prognostic factors able to identify high-risk cases, which may benefit from adjuvant treatments, are warranted. Mammalian target of rapamycin (mTOR) belongs to the PI3K-AKT pathway. Read More

World Neurosurg 2018 Nov 27. Epub 2018 Nov 27.

Department of Neurosurgery, West China Hospital, Sichuan University, 37 Guo Xue Xiang Street, Chengdu, 610041, P. R. China. Electronic address:

Objective: Lateral intraventricular anaplastic meningiomas (LIAMs) are rare lesions. The aim of this study is to clarify clinical and radiological characteristics, the optimal treatment strategies of LIAMs with long-term follow-up.

Patients And Methods: From September 2008 to September 2017, 5 LIAM patients were enrolled in our study. Read More

World Neurosurg 2018 Nov 27. Epub 2018 Nov 27.

Mayo Clinic Neuro-Informatics Laboratory, Mayo Clinic College of Medicine and Science, Rochester, MN. Electronic address:

Background: In the modern, increasingly pay-for-performance era, unplanned ROR is gaining attention as a surgical quality metric. However, large-scale data on the appropriateness and utility of this measure in neurosurgery are scarce.

Objective: To provide a comprehensive description of all unplanned returns to the operating room (RORs) after neurosurgical procedures in a national surgical registry and identify factors associated with ROR. Read More

J Neuroradiol 2018 Nov 27. Epub 2018 Nov 27.

Department of Pathology, University of Manitoba, Winnipeg, Canada.

Background And Purpose: Hemangiopericytoma and meningioma appear similar on routine diagnostic imaging and hence are difficult to distinguish. The purpose of our study was to examine the diffusion weighted imaging (DWI) characteristics of these two types of tumours.

Methods: In a retrospective study, each patient with hemangiopericytoma was matched with two meningioma patients based on tumour location and size. Read More

Clin Neuropathol 2018 Nov 30. Epub 2018 Nov 30.

Solitary fibrous tumor/hemangiopericytoma seldom arises from the optic nerve sheath. Herein, we describe the clinical, radiological, and histological findings of a solitary fibrous tumor/hemangiopericytoma arising from the optic nerve sheath and occupying the optic canal. The diagnosis is challenging both clinically and histologically as it clinically simulates a commoner lesion, i. Read More

Eye Brain 2018 24;10:85-99. Epub 2018 Oct 24.

Sydney Medical School, Discipline of Clinical Ophthalmology and Eye Health, University of Sydney, Sydney, NSW, Australia,

Optic nerve sheath meningiomas are rare benign neoplasms of the meninges surrounding the optic nerve. They are a significant cause of morbidity. While the mortality rate is practically zero, these tumors can blind or disfigure patients. Read More

World Neurosurg 2018 Nov 26. Epub 2018 Nov 26.

Neurosurgical Oncology Department, Humanitas University, Rozzano, Italy.

Background: Meningioma is the most common primary intracranial tumor. Surgical resection is the first choice of treatment, while the role of adjuvant radiotherapy (RT) is still unclear. Aim of the study was to evaluate prognostic factors influencing the local recurrence rate. Read More

Oper Neurosurg (Hagerstown) 2018 Nov 28. Epub 2018 Nov 28.

Director of Skull Base Program, Department of Neurological Surgery, Centro Médico Nacional 20 de Noviembre, ISSSTE, Mexico City, Mexico.

Falcotentorial meningiomas originate in the junction of the falx cerebri and the tentorium. Due to its anatomic vicinity, these tumors have a close relationship with important neurovascular structures surrounding the pineal region including the deep venous system. Surgical approaches would normally consider posterior midline corridors, but decision between supra or infratentorial access should be considered by the size, anatomic displacement of structures, and the infiltration of the dural attachment. Read More

J Neurosurg 2018 Sep 1. Epub 2018 Sep 1.

J Neurosurg 2018 Oct 1:1-7. Epub 2018 Oct 1.

OBJECTIVETranssphenoidal surgery (TSS) is commonly used for anterior skull base surgery, especially in the sella turcica (sellar) region. However, because of its anatomical position, CSF leakage is a major complication of this approach. The authors introduced a new grading reconstruction strategy for anterior skull base surgery with continuous dural suturing in 2013. Read More

Cancer Epidemiol 2018 Nov 24;58:63-70. Epub 2018 Nov 24.

Department of Medical Information, Georges Pompidou European Hospital, 75015, Paris, France.

Background: To describe the epidemiology of surgically treated meningiomas and compare the results with previously published studies.

Methods: We processed the French medico-administrative national hospital discharge summary database, Programme de Médicalisation des Systèmes d'Information (PMSI) using an algorithm combining the type of surgical procedure and codes from the International Classification of Diseases to retrieve appropriate cases of meningiomas operated between 2008 and 2016.

Results: This nationwide study found 25,737 cases of operated meningiomas. Read More

World Neurosurg 2018 Nov 23. Epub 2018 Nov 23.

Neuropathology Section, Department of Pathology and Molecular Medicine, Hamilton Health Sciences and McMaster University, Hamilton, Ontario, Canada. Electronic address:

Background: Primary dural based lymphoma is a rare disease entity. It has beenhypothesized that patients with sarcoidosis are at increased risk of developing lymphoma, an association known as "sarcoidosis-lymphoma syndrome", although dural disease has been not yet reported in the literature.

Case Description: Here we report the first case of dural based lymphoma in a 60-year-old; man with a history of sarcoidosis, in keeping with sarcoidosis-lymphoma syndrome. Read More

World Neurosurg 2018 Nov 23. Epub 2018 Nov 23.

Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, New York, NY.

Introduction: Medical malpractice litigation is an issue of major concern in neurosurgery, with 19.1% of neurosurgeons facing a claim annually. Neurosurgery possesses the greatest risk of malpractice of any specialty, likely due to the complex clinical environment and disease severity. Read More

Oper Neurosurg (Hagerstown) 2018 Nov 26. Epub 2018 Nov 26.

Department of Neurosurgery, Lenox Hill Hospital, Zucker School of Medicine at Hofstra/Northwell, New York, New York.

Background: During its development and preclinical assessment, a novel, 3-dimensional (3D), high-definition (4K-HD) exoscope system was formerly shown to provide an immersive surgical experience, while maintaining a portable, low-profile design.

Objective: To assess the clinical applicability of this 3D 4K-HD exoscope via first-in-man surgical use.

Methods: The operative workflow, functionality, and visual haptics of the 3D 4K-HD exoscope were assessed in a variety of microneurosurgical cases at 2 US centers. Read More

Neuropsychology 2018 Nov 26. Epub 2018 Nov 26.

Department of Cognitive Neuropsychology, Tilburg University.

Objective: The majority of meningioma patients suffer from presurgical cognitive deficits. Since meningiomas do not directly damage the brain, this is presumably caused by a functional integrity reduction of the surrounding brain tissue through perilesional edema and/or mass effect of the tumor. Tumor location is a key feature in determining neurological symptoms in brain tumor patients, but the relationship between meningioma location and cognitive performance remains unclear. Read More

J Neurol Surg B Skull Base 2018 Dec 25;79(Suppl 5):S426-S427. Epub 2018 Sep 25.

Department of Neurological Surgery, University of Wisconsin Medical School, Madison, Wisconsin, United States.

Infratentorial ependymomas that arise in the fourth ventricle and extend into the cerebellopontine angle (CPA) through the foramina of Luschka are well described. However, a primary CPA location of an ependymoma is distinctly uncommon. In this video, we present a 46-year-old man with episodes of dizziness, left-sided tinnitus, imbalance, double vision, and nausea. Read More

World Neurosurg 2018 Nov 21. Epub 2018 Nov 21.

Departamento de Neurologia do Hospital das Clínicas da Universidade de São Paulo-SP, Brasil.

Objective: Review the data published on the subject to create a more comprehensive natural history of multiple meningiomas (MM).

Methods: a review of the MM published in the literature up to now was carried out through a Medline search up to August 2018. The use of the "multiple meningiomas" keyword returned 278 papers; and the parameters analyzed in our present cohort were searched on those publications. Read More

Neurol Clin 2019 Feb;37(1):85-102

Department of Neurology, Brigham and Women's Hospital, 60 Fenwood Road, Boston, MA 02115, USA; Department of Ophthalmology, Massachusetts Eye and Ear, 243 Charles Street, Boston, MA 02114, USA. Electronic address:

The physiologic changes that accompany pregnancy can have important implications for neuro-ophthalmic disease. This article discusses pregnancy-related considerations for meningioma, pituitary disorders, demyelinating disease, myasthenia gravis, thyroid eye disease, idiopathic intracranial hypertension, cerebral venous sinus thrombosis, stroke, migraine, and cranial neuropathies. The article also details the potential neuro-ophthalmic complications of preeclampsia and eclampsia and reviews the use of common diagnostic studies during pregnancy. Read More

World Neurosurg 2018 12;120:595

Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA. Electronic address:

World Neurosurg 2018 12;120:594

Department of Neurosurgery, University of Sao Paulo, Sao Paulo, Brazil. Electronic address:

Clin Imaging 2018 Nov 1;54:1-5. Epub 2018 Nov 1.

Department of Radiology, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Lenox Hill Hospital, 100 East 77th Street, New York, NY 10075, USA.

Purpose: Intracranial Hemangiopericytomas (IHP) are dural based tumors that frequently recur/metastasize. Unfortunately, their imaging appearance overlaps significantly with more benign meningiomas. We evaluated the use of diffusion weighted imaging (DWI) to differentiate IHP from meningioma. Read More

World Neurosurg 2018 Nov 20. Epub 2018 Nov 20.

Department of Neurosurgery, University of Rochester Medical Center, Rochester, NY. Electronic address:

Objective: Patients undergoing surgical resection of meningioma are at increased risk for developing venous thromboembolism (VTE). The primary aim of this study was to assess the occurrence of VTE in patients who underwent surgery to remove their meningioma, and to determine the risk factors and associated complications with VTE.

Methods: The American College of Surgeons(ACS) National Surgical Quality Improvement Project (NSQIP) database from 2012-2015 was reviewed for patients who had undergone meningioma resection according to their primary Current Procedural Terminology codes and International Classification of Diseases, Ninth Revision. Read More