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Iwata T, Hirayama R, Yamada S, Kijima N, Okita Y, Kagawa N, Kishima H. Automated volumetry of meningiomas in contrast-enhanced T1-Weighted MRI using deep learning. World Neurosurg X 2024; 22:100353. [PMID: 38455247 PMCID: PMC10918322 DOI: 10.1016/j.wnsx.2024.100353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 02/21/2024] [Indexed: 03/09/2024] Open
Abstract
BACKGROUND Meningiomas are among the most common intracranial tumors. In these tumors, volumetric assessment is not only important for planning therapeutic intervention but also for follow-up examination.However, a highly accurate automated volumetric method for meningiomas using single-modality magnetic resonance imaging (MRI) has not yet been reported. Here, we aimed to develop a deep learning-based automated volumetry method for meningiomas in MRI and investigate its accuracy and potential clinical applications. METHODS For deep learning, we used MRI images of patients with meningioma who were referred to Osaka University Hospital between January 2007 and October 2020. Imaging data of eligible patients were divided into three non-overlapping groups: training, validation, and testing. The model was trained and tested using the leave-oneout cross-validation method. Dice index (DI) and root mean squared percentage error (RMSPE) were measured to evaluate the model accuracy. Result: A total of 178 patients (64.6 ± 12.3 years [standard deviation]; 147 women) were evaluated. Comparison of the deep learning model and manual segmentation revealed a mean DI of 0.923 ± 0.051 for tumor lesions. For total tumor volume, RMSPE was 9.5 ± 1.2%, and Mann-Whitney U test did not show a significant difference between manual and algorithm-based measurement of the tumor volume (p = 0.96). CONCLUSION The automatic tumor volumetry algorithm developed in this study provides a potential volume-based imaging biomarker for tumor evaluation in the field of neuroradiological imaging, which will contribute to the optimization and personalization of treatment for central nervous system tumors in the near future.
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Affiliation(s)
- Takamitsu Iwata
- Department of Neurosurgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Ryuichi Hirayama
- Department of Neurosurgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Shuhei Yamada
- Department of Neurosurgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Noriyuki Kijima
- Department of Neurosurgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Yoshiko Okita
- Department of Neurosurgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Naoki Kagawa
- Department of Neurosurgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Haruhiko Kishima
- Department of Neurosurgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
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Strand PS, Wågø KJ, Pedersen A, Reinertsen I, Nälsund O, Jakola AS, Bouget D, Hosainey SAM, Sagberg LM, Vanel J, Solheim O. Growth dynamics of untreated meningiomas. Neurooncol Adv 2024; 6:vdad157. [PMID: 38187869 PMCID: PMC10771275 DOI: 10.1093/noajnl/vdad157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2024] Open
Abstract
Background Knowledge about meningioma growth characteristics is needed for developing biologically rational follow-up routines. In this study of untreated meningiomas followed with repeated magnetic resonance imaging (MRI) scans, we studied growth dynamics and explored potential factors associated with tumor growth. Methods In a single-center cohort study, we included 235 adult patients with radiologically suspected intracranial meningioma and at least 3 MRI scans during follow-up. Tumors were segmented using an automatic algorithm from contrast-enhanced T1 series, and, if needed, manually corrected. Potential meningioma growth curves were statistically compared: linear, exponential, linear radial, or Gompertzian. Factors associated with growth were explored. Results In 235 patients, 1394 MRI scans were carried out in the median 5-year observational period. Of the models tested, a Gompertzian growth curve best described growth dynamics of meningiomas on group level. 59% of the tumors grew, 27% remained stable, and 14% shrunk. Only 13 patients (5%) underwent surgery during the observational period and were excluded after surgery. Tumor size at the time of diagnosis, multifocality, and length of follow-up were associated with tumor growth, whereas age, sex, presence of peritumoral edema, and hyperintense T2-signal were not significant factors. Conclusions Untreated meningiomas follow a Gompertzian growth curve, indicating that increasing and potentially doubling subsequent follow-up intervals between MRIs seems biologically reasonable, instead of fixed time intervals. Tumor size at diagnosis is the strongest predictor of future growth, indicating a potential for longer follow-up intervals for smaller tumors. Although most untreated meningiomas grow, few require surgery.
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Affiliation(s)
- Per Sveino Strand
- Department of Neurosurgery, St. Olavs University Hospital, Trondheim, Norway
- Department of Neuromedicine and Movement Science, Norwegian University of Science and Technology, Trondheim, Norway
| | | | - André Pedersen
- Department of Health Research, SINTEF Digital, Trondheim, Norway
| | - Ingerid Reinertsen
- Department of Health Research, SINTEF Digital, Trondheim, Norway
- Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway
| | - Olivia Nälsund
- Department of Clinical Neuroscience, Institute of Neuroscience and Physiology at the Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Asgeir Store Jakola
- Department of Neurosurgery, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - David Bouget
- Department of Health Research, SINTEF Digital, Trondheim, Norway
| | | | - Lisa Millgård Sagberg
- Department of Neurosurgery, St. Olavs University Hospital, Trondheim, Norway
- Department of Public Health and Nursing, Norwegian University of Science and Technology, Trondheim, Norway
| | - Johanna Vanel
- Department of Health Research, SINTEF Digital, Trondheim, Norway
| | - Ole Solheim
- Department of Neurosurgery, St. Olavs University Hospital, Trondheim, Norway
- Department of Neuromedicine and Movement Science, Norwegian University of Science and Technology, Trondheim, Norway
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Ho VKY, Anten MM, Garst A, Bos EM, Snijders TJ, Eekers DBP, Seute T. Epidemiology of adult meningioma: Report from the Dutch Brain Tumour Registry (2000-2019). Eur J Neurol 2023; 30:3244-3255. [PMID: 37433563 DOI: 10.1111/ene.15979] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 07/05/2023] [Accepted: 07/06/2023] [Indexed: 07/13/2023]
Abstract
BACKGROUND AND PURPOSE Meningiomas are the most common primary tumours of the central nervous system. This study aimed to provide comprehensive nationwide estimates on the incidence, prevalence and prognostic impact of meningioma diagnosis in the Netherlands. METHODS Adult patients diagnosed with meningioma in 2000-2019 were selected from the Dutch Brain Tumour Registry (DBTR), part of the Netherlands Cancer Registry (NCR). Time trends in age-adjusted incidence and prevalence rates were evaluated using the estimated annual percentage change (EAPC). Relative survival rates were calculated using the Pohar Perme estimator. Case completeness of the DBTR/NCR was estimated through record linkage with one of the Dutch neuro-oncology centres. RESULTS From a total of 23,454 cases of meningioma, 11,306 (48.2%) were histologically confirmed and 12,148 (51.8%) were radiological diagnoses. Over time, the incidence of diagnosis increased from 46.9 per 1,000,000 inhabitants (European Standardized Rate [ESR]) to 107.3 (EAPC 4.7%, p < 0.01), with an increase in the incidence of radiological diagnoses from 14.0 to 70.2 per 1,000,000 ESR (EAPC 9.1%, p < 0.01). The prevalence of meningioma was estimated at 1012/1,000,000 on 1 January 2020, with almost 17,800 individuals having had a diagnosis of meningioma. Relative survival rate at 10 years for grade 1 meningiomas was 91.0% (95% confidence interval [CI] 89.4%-92.3%), 71.3% (95% CI 66.8%-75.2%) for grade 2 meningiomas and 36.4% (95% CI 27.3%-45.6%) for grade 3 meningiomas. Local case completeness was estimated at 97.6% for histologically confirmed meningiomas and 84.5% for radiological diagnoses. CONCLUSION With a near-complete registry, meningioma prevalence was estimated at over 1000 per 1,000,000 inhabitants.
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Affiliation(s)
- Vincent K Y Ho
- Department of Research and Development, Netherlands Comprehensive Cancer Organisation (IKNL), Utrecht, The Netherlands
- Department of Neurology and Neurosurgery, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - Monique M Anten
- Department of Neurology, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Anniek Garst
- Department of Research and Development, Netherlands Comprehensive Cancer Organisation (IKNL), Utrecht, The Netherlands
| | - Eelke M Bos
- Department of Neurosurgery, Erasmus MC Cancer Institute, University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Tom J Snijders
- Department of Neurology and Neurosurgery, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - Daniëlle B P Eekers
- Department of Radiation Oncology (Maastro), GROW School for Oncology and Reproduction, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Tatjana Seute
- Department of Neurology and Neurosurgery, University Medical Centre Utrecht, Utrecht, The Netherlands
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Mahgerefteh N, Mozaffari K, Teton Z, Malkhasyan Y, Kim K, Yang I. Incidental Meningiomas: Potential Predictors of Growth and Current State of Management. Neurosurg Clin N Am 2023; 34:347-369. [PMID: 37210125 DOI: 10.1016/j.nec.2023.02.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The rise in availability of neuroimaging has led to an increase in incidentally discovered meningiomas. These tumors are typically asymptomatic and tend to display slow growth. Treatment options include observation with serial monitoring, radiation, and surgery. Although optimal management is unclear, clinicians recommend a conservative approach, which preserves quality of life and limits unnecessary intervention. Several risk factors have been investigated for their potential utility in the development of prognostic models for risk assessment. Herein, the authors review the current literature on incidental meningiomas, focusing their discussion on potential predictive factors for tumor growth and appropriate management practices.
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Affiliation(s)
- Natalie Mahgerefteh
- Department of Neurosurgery, University of California, 300 Stein Plaza, Suite 562, Los Angeles, CA 90095-1761, USA
| | - Khashayar Mozaffari
- Department of Neurosurgery, University of California, 300 Stein Plaza, Suite 562, Los Angeles, CA 90095-1761, USA
| | - Zoe Teton
- Department of Neurosurgery, University of California, 300 Stein Plaza, Suite 562, Los Angeles, CA 90095-1761, USA
| | - Yelena Malkhasyan
- Department of Neurosurgery, University of California, 300 Stein Plaza, Suite 562, Los Angeles, CA 90095-1761, USA
| | - Kihong Kim
- Department of Neurosurgery, University of California, 300 Stein Plaza, Suite 562, Los Angeles, CA 90095-1761, USA
| | - Isaac Yang
- Department of Neurosurgery, University of California, 300 Stein Plaza, Suite 562, Los Angeles, CA 90095-1761, USA; Department of Radiation Oncology, 300 Stein Plaza, Suite 562, Los Angeles, CA 90095-1761, USA; Department of Head and Neck Surgery, 300 Stein Plaza, Suite 562, Los Angeles, CA 90095-1761, USA; Jonsson Comprehensive Cancer Center, 300 Stein Plaza, Suite 562, Los Angeles, CA 90095-1761, USA; Los Angeles Biomedical Research Institute, 300 Stein Plaza, Suite 562, Los Angeles, CA 90095-1761, USA; Harbor-UCLA Medical Center, 300 Stein Plaza, Suite 562, Los Angeles, CA 90095-1761, USA; David Geffen School of Medicine, Los Angeles, 100 West Carson Street, Torrance, CA 90502, USA.
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Opalak CF, Sima AP, Carr MT, Rock A, Somasundaram A, Workman KG, Dincer A, Chandra V, Vega RA, Broaddus WC. Growth Analysis of Untreated Meningiomas under Observation. J Neurol Surg A Cent Eur Neurosurg 2023; 84:109-115. [PMID: 34897618 DOI: 10.1055/s-0041-1739216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
BACKGROUND When meningiomas are small or asymptomatic, the decision to observe rather than treat requires balancing the growth potential of the lesion with the outcome and side effects of treatment. The aim of this study is to characterize the growth patterns of untreated meningiomas to better inform the clinical decision-making process. METHODS Patients with meningiomas were identified from 2005 to 2015. Those without treatment who had been followed for 1.5 years, with three magnetic resonance imaging (MRI) scans, were identified. Scans were measured with orthogonal diameters, geometric mean diameters, and volumes using the ABC/2 method. Regression modeling determined what growth pattern these parameters best approximated. RESULTS Two hundred and fifteen MRI scans for 34 female (82.9%) and 7 male (17%) patients with 43 tumors were evaluated. Initial tumor volumes ranged from 0.13 to 9.98 mL. The mean and median initial volumes were 2.44 and 1.52 mL, respectively. Follow-up times ranged from 21 to 144 months, with a median of 70 months. There were 12 tumors (28%) whose growth rates were significantly greater than zero. For all tumors, use of a linear regression model allowed accurate prediction of the future size using prior data. CONCLUSION Three-quarters of presumptive meningiomas managed conservatively do not grow significantly. The remainder have significant growth over time, and the behavior could be approximated with linear regression models.
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Affiliation(s)
- Charles F Opalak
- Department of Neurosurgery, Virginia Commonwealth University Health System, Richmond, Virginia, United States
| | - Adam P Sima
- Department of Biostatistics, Virginia Commonwealth University, Richmond, Virginia, United States
| | - Matthew Thomas Carr
- Department of Neurosurgery, Virginia Commonwealth University Health System, Richmond, Virginia, United States
| | - Andrew Rock
- Department of Neurosurgery, Virginia Commonwealth University Health System, Richmond, Virginia, United States
| | - Aravind Somasundaram
- Department of Neurosurgery, Virginia Commonwealth University Health System, Richmond, Virginia, United States
| | - Kathryn G Workman
- Department of Neurosurgery, Virginia Commonwealth University Health System, Richmond, Virginia, United States
| | - Alper Dincer
- Department of Neurosurgery, Virginia Commonwealth University Health System, Richmond, Virginia, United States
| | - Vyshak Chandra
- Department of Neurosurgery, University of Florida, Gainesville, Florida, United States
| | - Rafael A Vega
- Department of Neurosurgery, Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States
| | - William C Broaddus
- Department of Neurosurgery, Virginia Commonwealth University Health System, Richmond, Virginia, United States
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Wang JZ, Nassiri F, Saladino A, Zadeh G. Surgical Therapy of Non-Skull Base Meningiomas. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1416:79-94. [PMID: 37432621 DOI: 10.1007/978-3-031-29750-2_7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 07/12/2023]
Abstract
In a previous chapter, the surgical management of skull base meningiomas were discussed. However, the most common meningiomas that are diagnosed and operated on are non-skull base tumors located in the parasagittal/parafalcine region and convexity, and more rarely along the tentorium, and in an intraventricular location. These tumors present their own unique set of challenges given their unique anatomy and tend to be more biologically aggressive compared to skull base meningiomas, thereby reinforcing the importance of obtaining a gross total resection if possible, in order to delay recurrence. In this chapter we will cover the surgical management of non-skull base meningiomas with technical considerations for tumors located in each of the anatomical areas listed above.
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Affiliation(s)
- Justin Z Wang
- MacFeeters Hamilton Neuro-Oncology Program, Princess Margaret Cancer Centre, University Health Network and University of Toronto, Toronto, ON, Canada
- Division of Neurosurgery, Department of Surgery, The University of Toronto, Toronto, ON, Canada
| | - Farshad Nassiri
- MacFeeters Hamilton Neuro-Oncology Program, Princess Margaret Cancer Centre, University Health Network and University of Toronto, Toronto, ON, Canada.
- Division of Neurosurgery, Department of Surgery, The University of Toronto, Toronto, ON, Canada.
| | - Andrea Saladino
- Unit of Neurosurgery, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Gelareh Zadeh
- MacFeeters Hamilton Neuro-Oncology Program, Princess Margaret Cancer Centre, University Health Network and University of Toronto, Toronto, ON, Canada
- Division of Neurosurgery, Department of Surgery, The University of Toronto, Toronto, ON, Canada
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Clinical Management of Supratentorial Non-Skull Base Meningiomas. Cancers (Basel) 2022; 14:cancers14235887. [PMID: 36497370 PMCID: PMC9737260 DOI: 10.3390/cancers14235887] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/21/2022] [Accepted: 11/24/2022] [Indexed: 12/02/2022] Open
Abstract
Supratentorial non-skull base meningiomas are the most common primary central nervous system tumor subtype. An understanding of their pathophysiology, imaging characteristics, and clinical management options will prove of substantial value to the multi-disciplinary team which may be involved in their care. Extensive review of the broad literature on the topic is conducted. Narrowing the scope to meningiomas located in the supratentorial non-skull base anatomic location highlights nuances specific to this tumor subtype. Advances in our understanding of the natural history of the disease and how findings from both molecular pathology and neuroimaging have impacted our understanding are discussed. Clinical management and the rationale underlying specific approaches including observation, surgery, radiation, and investigational systemic therapies is covered in detail. Future directions for probable advances in the near and intermediate term are reviewed.
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Zilka T, Harag T, Illes R, Smrcka M. Sudden onset of complete ophthalmoplegia and blindness after resection of large frontal convexity meningioma: Case report. INTERDISCIPLINARY NEUROSURGERY 2022. [DOI: 10.1016/j.inat.2022.101705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Miwa Y, Sugawara T, Kobayashi D, Maehara T. Tumor doubling time as preoperative predictor of malignancy and recurrence in newly diagnosed meningioma. Neurosurg Rev 2022; 45:3683-3687. [PMID: 36136254 DOI: 10.1007/s10143-022-01869-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 08/26/2022] [Accepted: 09/15/2022] [Indexed: 11/28/2022]
Abstract
Most meningiomas are benign, and the indications for surgery are determined by size and symptoms, but some are malignant and have a high recurrence rate. Currently, no preoperative prognostic factors have been established. The purpose of this study was to investigate whether tumor doubling time (Td) is useful in predicting tumor prognosis. Patients who underwent surgery for newly diagnosed meningioma at our hospital between 2007 and 2021 with preoperative magnetic resonance (MR) imaging evaluation over a period of 6 months were included in this study. We calculated the Td from the preoperative MR images and examined the correlation between Td and WHO grade, MIB-1 SI, and other conditions. A total of 269 newly diagnosed meningiomas were operated on during the study period, of which 62 met inclusion criteria. The median Td was 1082 days (54-8579 days), and MIB-1 SI was 2.45% (0.7-14.6%). Td and MIB-1 SI had a negative correlation (r = - 0.319, p = 0.0122). MIB-1 SI was higher in patients with Td < 3 years than in those with Td ≥ 3 (p = 0.005), and the incidence of high WHO grade (grade2) was higher in patients with Td < 1 year than in patients with Td ≥ 1 (p = 0.014). Meningiomas with Td < 3 years had significantly higher MIB-1 SI, and tumors with Td < 1 year had a higher likelihood of malignancy. Therefore, early treatment should be considered in patients with short Td meningioma even if asymptomatic, and further consideration could be given to radical resection at the time of surgery.
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Affiliation(s)
- Yusuke Miwa
- Department of Neurosurgery, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - Takashi Sugawara
- Department of Neurosurgery, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan.
| | - Daisuke Kobayashi
- Department of Human Pathology, Tokyo Medical and Dental University, Tokyo, Japan
| | - Taketoshi Maehara
- Department of Neurosurgery, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
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Yamada S, Hirayama R, Iwata T, Kuroda H, Nakagawa T, Takenaka T, Kijima N, Okita Y, Kagawa N, Kishima H. Growth risk classification and typical growth speed of convexity, parasagittal, and falx meningiomas: a retrospective cohort study. J Neurosurg 2022; 138:1235-1241. [PMID: 36115061 DOI: 10.3171/2022.8.jns221290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 08/02/2022] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Meningiomas are the most common primary intracranial tumors, and their clinical and biological characteristics vary by location. Convexity, parasagittal, and falx meningiomas account for approximately 50%-65% of intracranial meningiomas. Focusing only on these locations, the aim of this study was to determine the typical speed of tumor growth, to assess the growth risk, and to show the possible tumor volume that many lesions can reach after 5 years. METHODS Patients with radiologically suspected convexity, parasagittal, or falx meningiomas at the authors' institution were studied retrospectively. The relative growth rate (RGR) and annual volume change (AVC) were calculated from MRI at more than 3-month intervals. Based on sex, age, and signal intensity on T2-weighted MRI, the cases were classified into three groups: extremely high-growth, high-growth, and low-growth groups. RESULTS The data of 313 cases were analyzed. The median RGR and AVC for this entire cohort were 6.1% (interquartile range [IQR] 2.4%-16.0%) and 0.20 (IQR 0.04-1.18) cm3/year, respectively. There were significant differences in sex (p = 0.018) and T2-weighted MRI signal intensity (p < 0.001) for RGR, and T2-weighted MRI signal intensity (p < 0.001), tumor location (p = 0.025), and initial tumor volume (p < 0.001) for AVC. The median RGR and AVC were 17.5% (IQR 8.3%-44.1%) and 1.05 (IQR 0.18-3.53) cm3/year, 8.2% (IQR 2.9%-18.6%) and 0.33 (IQR 0.06-1.66) cm3/year, and 3.4% (IQR 1.2%-5.8%) and 0.04 (IQR 0.02-0.21) cm3/year for the extremely high-growth, high-growth, and low-growth groups, respectively, with a significant difference among the groups (p < 0.001). A 2.24-times, or 5.24 cm3, increase in tumor volume over 5 years was typical in the extremely high-growth group, whereas the low-growth group showed little change in tumor volume even over a 5-year follow-up period. CONCLUSIONS For the first time, the typical speed of tumor growth was calculated, focusing only on patients with convexity, parasagittal, and falx meningiomas. In addition, the possible tumor volume that many lesions in these locations can reach after 5 years was shown based on objective indicators. These results may allow clinicians to easily detect lesions that require frequent follow-up or early treatment by determining whether they deviate from the typical range of the growth rate, similar to a growth chart for children.
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Sugawara T, Kobayashi D, Maehara T. Histopathological Investigation of Meningioma Capsule with Respect to Tumor Cell Invasion. Neurol Med Chir (Tokyo) 2022; 62:431-437. [PMID: 35944984 PMCID: PMC9534571 DOI: 10.2176/jns-nmc.2021-0402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
No previous study has histopathologically investigated whether a meningioma capsule presents with tumor cells. We investigated which types of tumor capsules (TCs) included tumor cells to help intraoperatively determine those TCs that do not need to be removed and have a low recurrence risk. We investigated 22 specimens of 14 newly diagnosed meningiomas from February 2011 to June 2021. The capsules were classified into three types: TC, capsule-like thickened arachnoid membrane (CAM), and extended membrane (EM). Capsule properties were scored by hardness (soft = 1, medium = 2, hard = 3) and transparency (high = 1, medium = 2, low = 3). The hardness, transparency, and score sums were compared between capsules with and without tumor invasion in the CAM and EM types. The mean follow-up duration was 40.6 months, and there was only one recurrence in a remote location from the residual capsule. Nine capsules were classified as TC, seven as CAM, and six as EM. The tumor cells invaded 88.9% of TCs, 42.9% of CAMs, and 50% of EMs. The hardness, transparency, and score sums for CAMs with tumor invasion were lower than those for CAMs without tumor invasion, although not significant (P = 0.114, P = 0.114, P = 0.057, respectively). A thickened TC or soft and highly transparent CAM indicated a high risk for tumor cell invasion; thus, such cases require a careful and long-term follow-up. Hard and low transparent residual CAMs may have had a low risk for tumor invasion; therefore, leaving such capsules that tightly adhere to the eloquent cortex can be theoretically justified to avoid damaging the brain surface.
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Daza-Ovalle A, Bin-Alamer O, Flickinger J, Niranjan A, Lunsford LD. Outcomes after gamma knife radiosurgery for intraventricular meningiomas. J Neurooncol 2022; 160:23-31. [PMID: 35882752 DOI: 10.1007/s11060-022-04091-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 07/06/2022] [Indexed: 10/16/2022]
Abstract
BACKGROUND Intraventricular meningiomas (IVMs) are rare tumors with considerable treatment-associated morbidity due to their challenging location. Treatment with stereotactic radiosurgery (SRS) is sparsely reported in the literature. We describe our experience over the last 35 years using Gamma knife radiosurgery (GKRS) for IVMs. METHODS We retrospectively reviewed the GKRS database identifying 2501 meningiomas treated at the University of Pittsburgh Medical Center over the last 35 years. Nineteen patients with (12 males, mean age = 53.2 years, range 14-84) 20 IVMs were identified. Headache was the most frequent presenting symptom (N = 12), and the trigone of the lateral ventricle was the most common location (N = 18). The median tumor volume was 4.8 cc (range, 0.8-17). The median margin dose was 14 Gy (range, 12-25) delivered at 50% isodose line. RESULTS At a median follow-up of 63.1 months (range, 6-322.4) symptom control was achieved in 18 (94.7%) patients. The overall progression-free survival (PFS) was 95% at 5 years, and 85% at 10-years. After Log-rank test, patients who underwent GKRS within 12 months after diagnosis (vs. ≥ 12 months, X2: 4.455, p = 0.035), patients treated with primary GKRS without prior biopsy (vs. prior biopsy, X2: 4.000, p = 0.046), and patients with WHO grade I meningioma (vs. WHO II, X2: 9.000, p = 0.003) had a longer PFS. Imaging showed peritumoral edema in seven cases at a median of 10.5 (range, 6.13-24.3) months after GKRS. Only three of these patients were symptomatic and were successfully managed with oral medications. Cox´s regression revealed that a V12Gy ≥ 10 cc [HR: 10.09 (95% CI: 2.11-48.21), p = 0.004], and tumor volume ≥ 8 cc [HR: 5.87 (95% CI: 1.28-26.97), p = 0.023] were associated with a higher risk of peritumoral edema. CONCLUSION GKRS is an effective and safe management option for intraventricular meningiomas. Early GKRS should be considered as a primary management modality for small and medium sized IVM and adjuvant management for residual IVMs.
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Affiliation(s)
- Alberto Daza-Ovalle
- Department of Neurological Surgery, University of Pittsburgh Medical Center, 200 Lothrop Street, Suite B-400, Pittsburgh, PA, 15213, USA.,Neurosurgery Department, Center for Research and Training in Neurosurgery (CIEN), Samaritana University Hospital, Universidad del Rosario School of Medicine, Bogota, Colombia
| | - Othman Bin-Alamer
- Department of Neurological Surgery, University of Pittsburgh Medical Center, 200 Lothrop Street, Suite B-400, Pittsburgh, PA, 15213, USA
| | - John Flickinger
- Department of Neurological Surgery, University of Pittsburgh Medical Center, 200 Lothrop Street, Suite B-400, Pittsburgh, PA, 15213, USA
| | - Ajay Niranjan
- Department of Neurological Surgery, University of Pittsburgh Medical Center, 200 Lothrop Street, Suite B-400, Pittsburgh, PA, 15213, USA.
| | - L Dade Lunsford
- Department of Neurological Surgery, University of Pittsburgh Medical Center, 200 Lothrop Street, Suite B-400, Pittsburgh, PA, 15213, USA
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13
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Oyem PC, de Andrade EJ, Soni P, Murayi R, Obiri-Yeboah D, Lopez D, Kshettry VR, Recinos PF. Natural history and volumetric analysis of meningiomas in neurofibromatosis type 2. Neurosurg Focus 2022; 52:E5. [DOI: 10.3171/2022.2.focus21779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Accepted: 02/16/2022] [Indexed: 11/06/2022]
Abstract
OBJECTIVE
The objective of this paper was to describe the volumetric natural history of meningiomas in patients with neurofibromatosis type 2 (NF2).
METHODS
The authors performed a retrospective descriptive study by reviewing NF2 patients with meningiomas at their institution between 2000 and 2019. Demographic data were collected from the electronic medical records. Tumor volume was collected using volumetric segmentation software. Imaging characteristics including peritumoral brain edema (PTBE) and tumor calcification were collected for each patient from their first to most recent MRI at the authors’ institution. An increase of 15% or more per year from original tumor size was used as the cutoff to define growth.
RESULTS
A total of 137 meningiomas from 48 patients were included in the analysis. The average number of tumors per person was 2.9. Ninety-nine (72.3%) tumors were in female patients. The median length of follow-up from first imaging to last imaging was 32 months (IQR 10.9, 68.3 months). Most tumors were located in the cerebral convexity (24.8%), followed by the falcine region (18.2%) and spine (10.2%). The median tumor growth was 0.12 cm3/yr (IQR 0.03, 0.52 cm3/yr). At the time of first imaging, 21.9% of tumors had calcifications, while 13.9% of meningiomas had PTBE. Of 137 tumors, 52 showed growth. Characteristics associated with tumor growth included PTBE (OR 9.12, 95% CI 1.48–56.4), tumor volume (per cm3) at first imaging (OR 0.91, 95% CI 0.83–0.99), and 10-year increased age at first imaging (OR 0.57, 95% CI 0.43–0.74). PTBE had the shortest median time to growth at 9.2 months.
CONCLUSIONS
Although the majority of NF2-associated meningiomas do not grow in the short term, a wide range of growth patterns can be seen. Younger age at first imaging and presence of PTBE are associated with growth. Patients with these characteristics likely benefit from closer follow-up.
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Affiliation(s)
- Precious C. Oyem
- Department of Neurological Surgery, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, Ohio
- Rose Ella Burkhardt Brain Tumor and Neuro-Oncology Center, Neurological Institute, Cleveland Clinic, Cleveland, Ohio; and
| | - Erion J. de Andrade
- Rose Ella Burkhardt Brain Tumor and Neuro-Oncology Center, Neurological Institute, Cleveland Clinic, Cleveland, Ohio; and
| | - Pranay Soni
- Department of Neurological Surgery, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, Ohio
- Rose Ella Burkhardt Brain Tumor and Neuro-Oncology Center, Neurological Institute, Cleveland Clinic, Cleveland, Ohio; and
| | - Roger Murayi
- Department of Neurological Surgery, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, Ohio
| | - Derrick Obiri-Yeboah
- Department of Neurological Surgery, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, Ohio
| | - Diana Lopez
- Department of Neurological Surgery, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, Ohio
| | - Varun R. Kshettry
- Department of Neurological Surgery, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, Ohio
- Rose Ella Burkhardt Brain Tumor and Neuro-Oncology Center, Neurological Institute, Cleveland Clinic, Cleveland, Ohio; and
| | - Pablo F. Recinos
- Department of Neurological Surgery, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, Ohio
- Rose Ella Burkhardt Brain Tumor and Neuro-Oncology Center, Neurological Institute, Cleveland Clinic, Cleveland, Ohio; and
- Department of Otolaryngology–Head & Neck Surgery, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, Ohio
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14
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Thomann P, Häni L, Vulcu S, Schütz A, Frosch M, Jesse CM, El-Koussy M, Söll N, Hakim A, Raabe A, Schucht P. Natural history of meningiomas: a serial volumetric analysis of 240 tumors. J Neurosurg 2022; 137:1639-1649. [PMID: 35535829 DOI: 10.3171/2022.3.jns212626] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Accepted: 03/11/2022] [Indexed: 11/06/2022]
Abstract
OBJECTIVE The management of asymptomatic intracranial meningiomas is controversial. Through the assessment of growth predictors, the authors aimed to create the basis for practicable clinical pathways for the management of these tumors. METHODS The authors volumetrically analyzed meningiomas radiologically diagnosed at their institution between 2003 and 2015. The primary endpoint was growth of tumor volume. The authors used significant variables from the multivariable regression model to construct a decision tree based on the exhaustive Chi-Square Automatic Interaction Detection (CHAID) algorithm. RESULTS Of 240 meningiomas, 159 (66.3%) demonstrated growth during a mean observation period of 46.9 months. On multivariable logistic regression analysis, older age (OR 0.979 [95% CI 0.958-1.000], p = 0.048) and presence of calcification (OR 0.442 [95% CI 0.224-0.872], p = 0.019) had a negative predictive value for tumor growth, while T2-signal iso-/hyperintensity (OR 4.415 [95% CI 2.056-9.479], p < 0.001) had a positive predictive value. A decision tree model yielded three growth risk groups based on T2 signal intensity and presence of calcifications. The median tumor volume doubling time (Td) was 185.7 months in the low-risk, 100.1 months in the intermediate-risk, and 51.7 months in the high-risk group (p < 0.001). Whereas 0% of meningiomas in the low- and intermediate-risk groups had a Td of ≤ 12 months, the percentage was 8.9% in the high-risk group (p = 0.021). CONCLUSIONS Most meningiomas demonstrated growth during follow-up. The absence of calcifications and iso-/hyperintensity on T2-weighted imaging offer a practical way of stratifying meningiomas as low, intermediate, or high risk. Small tumors in the low- or intermediate-risk categories can be monitored with longer follow-up intervals.
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Affiliation(s)
- Pascal Thomann
- 1Department of Neurosurgery, Inselspital, Bern University Hospital, University of Bern, Switzerland
| | - Levin Häni
- 1Department of Neurosurgery, Inselspital, Bern University Hospital, University of Bern, Switzerland
| | - Sonja Vulcu
- 1Department of Neurosurgery, Inselspital, Bern University Hospital, University of Bern, Switzerland
| | - Alessa Schütz
- 1Department of Neurosurgery, Inselspital, Bern University Hospital, University of Bern, Switzerland
| | - Maximilian Frosch
- 1Department of Neurosurgery, Inselspital, Bern University Hospital, University of Bern, Switzerland.,2Institute of Neuropathology, Medical Center-University of Freiburg, Germany
| | - Christopher Marvin Jesse
- 1Department of Neurosurgery, Inselspital, Bern University Hospital, University of Bern, Switzerland
| | - Marwan El-Koussy
- 3Department of Radiology and Neuroradiology, Hospital of Emmental, Burgdorf, Switzerland; and
| | - Nicole Söll
- 1Department of Neurosurgery, Inselspital, Bern University Hospital, University of Bern, Switzerland
| | - Arsany Hakim
- 4Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland
| | - Andreas Raabe
- 1Department of Neurosurgery, Inselspital, Bern University Hospital, University of Bern, Switzerland
| | - Philippe Schucht
- 1Department of Neurosurgery, Inselspital, Bern University Hospital, University of Bern, Switzerland
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15
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Davis B, Beldishevski-Shotadze O, Ibrahim Z, McHugh F, Turner C, Olson S, Faull R, Dragunow M, Law AJJ, Correia JA. Characterization of volumetric growth of intracranial meningiomas in Māori and Pasifika populations in New Zealand. ANZ J Surg 2022; 92:848-855. [PMID: 35239240 DOI: 10.1111/ans.17564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Revised: 01/21/2022] [Accepted: 02/04/2022] [Indexed: 11/28/2022]
Abstract
BACKGROUND Māori and Pasifika populations in New Zealand have a higher incidence and prevalence of intracranial meningioma (IM). We sought to evaluate the volumetric growth rate of meningiomas under surveillance in these populations. METHODS From July 2002 to October 2020, 336 patients with a total of 408 IM underwent conservative management with serial radiological surveillance at Auckland City Hospital and met the criteria for the study. Inclusion criteria included: age >16 at diagnosis, ≥2 appropriate scans one or more years apart. Exclusion criteria included previous cranial irradiation, a diagnosis of Neurofibromatosis and prior treatment of meningioma. Demographic and clinical data were obtained from the electronic medical records. Imaging data were recorded from the first and last scans. We utilized open-source image processing software (3D Slicer) for semi-automated segmentation and volume calculation. Consistent with previous literature, we calculated the relative growth rate (RGR, %/year) and annual volume change (AVC, cm3 /year) over time. RESULTS Four hundred and eight meningiomas were volumetrically characterized for a mean duration of 6.2 years. The Māori and Pasifika populations (n = 134/393) demonstrated a higher RGR (31.41 versus 14.33%/year) (P = 0.026) and AVC (2.05 versus 0.95 cm3 ) (P = 0.025) compared to the control population. They also presented at a younger age and had a higher rate of tumour multiplicity. Males represented only 17.6% of the cohort but exhibited a higher growth rate (AVC = 2.52 cm3 /year) than females (AVC = 0.99 cm3 /year) (P = 0034). CONCLUSIONS Māori and Pasifika populations in New Zealand have a higher incidence and volumetric growth rate of IM compared to a control population. This warrants further clinical, histopathological and genomic analysis.
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Affiliation(s)
- Brendan Davis
- Department of Neurosurgery, Auckland City Hospitalm, Grafton, Auckland, New Zealand
| | | | - Zaid Ibrahim
- Department of Neurosurgery, Auckland City Hospitalm, Grafton, Auckland, New Zealand
| | - Frances McHugh
- Department of Neurosurgery, Auckland City Hospitalm, Grafton, Auckland, New Zealand
| | - Clinton Turner
- Department of Anatomical Pathology, Lab Plus, Auckland City Hospital, Grafton, Auckland, New Zealand.,Neurosurgical Research Unit, Centre for Brain Research, Faculty of Medical and Health Sciences, University of Auckland, Grafton, Auckland, New Zealand
| | - Sarah Olson
- Department of Neurosurgery, Auckland City Hospitalm, Grafton, Auckland, New Zealand
| | - Richard Faull
- Neurosurgical Research Unit, Centre for Brain Research, Faculty of Medical and Health Sciences, University of Auckland, Grafton, Auckland, New Zealand
| | - Mike Dragunow
- Neurosurgical Research Unit, Centre for Brain Research, Faculty of Medical and Health Sciences, University of Auckland, Grafton, Auckland, New Zealand
| | - Andrew J J Law
- Department of Neurosurgery, Auckland City Hospitalm, Grafton, Auckland, New Zealand
| | - Jason A Correia
- Department of Neurosurgery, Auckland City Hospitalm, Grafton, Auckland, New Zealand.,Neurosurgical Research Unit, Centre for Brain Research, Faculty of Medical and Health Sciences, University of Auckland, Grafton, Auckland, New Zealand
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16
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Pikis S, Mantziaris G, Islim AI, Peker S, Samanci Y, Nabeel AM, Reda WA, Abdelkarim K, El-Shehaby AMN, Tawadros SR, Emad RM, Delabar V, Mathieu D, Lee CC, Yang HC, Licsak R, Hanuska J, Alvarez RM, Patel DN, Kondziolka D, Bernstein K, Moreno NM, Tripathi M, Speckter H, Albert C, Bowden GN, Benveniste RJ, Lunsford DL, Jenkinson MD, Sheehan J. Stereotactic radiosurgery versus active surveillance for incidental, convexity meningiomas: a matched cohort analysis from the IMPASSE study. J Neurooncol 2022; 157:121-128. [DOI: 10.1007/s11060-022-03953-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 01/21/2022] [Indexed: 11/28/2022]
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17
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Amano T, Nakamizo A, Murata H, Miyamatsu Y, Mugita F, Yamashita K, Noguchi T, Nagata S. Preoperative Prediction of Intracranial Meningioma Grade Using Conventional CT and MRI. Cureus 2022; 14:e21610. [PMID: 35228967 PMCID: PMC8872636 DOI: 10.7759/cureus.21610] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/21/2022] [Indexed: 11/05/2022] Open
Abstract
Objective Preoperative diagnosis of tumor grade can assist in treatment-related decision-making for patients with intracranial meningioma. This study aimed to distinguish between high-grade and low-grade meningiomas using conventional CT and MRI. Methodology We retrospectively analyzed 173 consecutive patients with intracranial meningioma (149 low-grade and 24 high-grade tumors) who were treated surgically at the National Hospital Organization Kyushu Medical Center from 2008 to 2020. Clinical and radiological features, including tumor doubling time (Td) and relative growth rate (RGR), were compared between low-grade and high-grade meningiomas. Results Multivariate logistic regression analysis showed that symptomatic tumor (p=0.001), non-skull base location (p=0.006), irregular tumor shape (p=0.043), tumor heterogeneity (p=0.025), and peritumoral brain edema (p=0.003) were independent predictors of high-grade meningioma. In 53 patients who underwent surgery because of tumor progression, progression to symptoms (p=0.027), intratumoral heterogeneity (p<0.001), peritumoral brain edema (p=0.001), larger tumor volume (p=0.005), shorter Td (p<0.001), and higher RGR (P<0.001) were significantly associated with high-grade meningioma. Receiver operating characteristics (ROC) curve analysis showed that the optimal Td and annual RGR cut-off values to distinguish high-grade from low-grade meningioma were 460.5 days and 73.2%, respectively (100% sensitivity and 78.6% specificity). Conclusion Based on our findings, conventional CT and MRI are useful methods to predict meningioma grades before surgery. High-grade lesions are associated with non-skull base location, irregular tumor shape, intratumoral heterogeneity, and peritumoral brain edema. High-grade meningioma should be suspected in tumors that exhibit Td <460.5 days or annual RGR >73.2% or those that develop intratumoral heterogeneity or surrounding brain edema on surveillance imaging.
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18
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Kim BS, Jung TY, Moon KS, Kim IY, Jung S. Meningioma With Partial and Spontaneous Regression of Peritumoral Edema on Long-Term Follow Up. Brain Tumor Res Treat 2022; 10:275-278. [DOI: 10.14791/btrt.2022.0040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/12/2022] [Accepted: 10/13/2022] [Indexed: 11/06/2022] Open
Affiliation(s)
- Bo-seob Kim
- Department of Neurosurgery, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea
| | - Tae-Young Jung
- Department of Neurosurgery, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea
| | - Kyung-Sub Moon
- Department of Neurosurgery, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea
| | - In-Young Kim
- Department of Neurosurgery, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea
| | - Shin Jung
- Department of Neurosurgery, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea
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19
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Yamada S, Kijima N, Nakagawa T, Hirayama R, Kinoshita M, Kagawa N, Kishima H. How Much Tumor Volume Is Responsible for Development of Clinical Symptoms in Patients With Convexity, Parasagittal, and Falx Meningiomas? Front Neurol 2021; 12:769656. [PMID: 34867757 PMCID: PMC8635518 DOI: 10.3389/fneur.2021.769656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 10/25/2021] [Indexed: 11/17/2022] Open
Abstract
Purpose: Meningiomas are the most common primary intracranial neoplasms and clinical symptom appearance depends on their volume and location. This study aimed to identify factors that influence clinical symptoms and to determine a specific threshold tumor volume for the prediction of symptomatic progression in patients with convexity, parasagittal, and falx meningiomas. Materials and Methods: We retrospectively studied patients with radiologically suspected convexity, parasagittal, or falx meningiomas at our institution. Results: The data of three hundred thirty-three patients were analyzed. We further divided patients into two groups based on clinical symptoms: an asymptomatic group (250 cases) and a symptomatic group (83 cases). Univariate analysis revealed significant differences between the groups in terms of sex (p = 0.002), age at the time of volumetric analysis (p < 0.001), hyperintense lesions on T2-weighted images (p = 0.029), peritumoral edema (p < 0.001), maximum tumor diameter (p < 0.001), and tumor volume (p < 0.001). Further multivariate analysis revealed significant differences between the groups in terms of age at the time of volumetric analysis (p = 0.002), peritumoral edema (p < 0.001), and tumor volume (p < 0.001). The receiver operating characteristic curve revealed a threshold tumor volume of 21.1 ml for predicting whether a patient would develop symptoms (sensitivity 0.843, specificity 0.880, an area under the curve 0.919 [95% confidence interval: 0.887–0.951]). Conclusion: We identified factors predictive of clinical symptoms in patients with convexity, parasagittal, and falx meningiomas and determined the first-ever threshold tumor volume for predicting symptomatic progression in such patients.
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Affiliation(s)
- Shuhei Yamada
- Department of Neurosurgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Noriyuki Kijima
- Department of Neurosurgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Tomoyoshi Nakagawa
- Department of Neurosurgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Ryuichi Hirayama
- Department of Neurosurgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Manabu Kinoshita
- Department of Neurosurgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Naoki Kagawa
- Department of Neurosurgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Haruhiko Kishima
- Department of Neurosurgery, Osaka University Graduate School of Medicine, Suita, Japan
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20
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Prevalence of incidental meningiomas and gliomas on MRI: a meta-analysis and meta-regression analysis. Acta Neurochir (Wien) 2021; 163:3401-3415. [PMID: 34227013 DOI: 10.1007/s00701-021-04919-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 06/14/2021] [Indexed: 01/24/2023]
Abstract
BACKGROUND The chance of incidentally detecting brain tumors is increasing as the utilization of magnetic resonance imaging (MRI) becomes more prevalent. In this background, knowledge is accumulating in relation to the prediction of their clinical sequence. However, their prevalence-especially the prevalence of glioma-has not been adequately investigated according to age, sex, and region. METHOD We systematically reviewed the articles according to the PRISMA statement and calculated the prevalence of meningiomas and diffuse gliomas in adults using a generalized linear mixed model. Specifically, the differences related to age, sex, and region were investigated. RESULTS The pooled prevalence of incidental meningiomas in MRI studies was 0.52% (95% confidence interval (CI) [0.34-0.78]) in 37,697 individuals from 36 studies. A meta-regression analysis showed that the prevalence was significantly higher in elderly individuals, women, and individuals outside Asia; this remained statistically significant in the multivariate meta-regression analysis. The prevalence reached to 3% at 90 years of age. In contrast, the prevalence of gliomas in 30,918 individuals from 18 studies was 0.064% (95%CI [0.040 - 0.104]). The meta-regression analysis did not show a significant relationship between the prevalence and age, male sex, or region. The prevalence of histologically confirmed glioma was 0.026% (95%CI [0.013-0.052]). CONCLUSIONS Most of meningiomas, especially those in elderlies, remained asymptomatic, and their prevalence increased with age. However, the prevalence of incidental gliomas was much lower and did not increase with age. The number of gliomas that developed and the number that reached a symptomatic stage appeared to be balanced.
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21
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Chiba K, Sugawara T, Kobayashi D, Sato A, Murota Y, Maehara T. Atypical Histological Features as Risk Factors for Recurrence in Newly Diagnosed WHO Grade I Meningioma. Neurol Med Chir (Tokyo) 2021; 61:647-651. [PMID: 34470989 PMCID: PMC8592816 DOI: 10.2176/nmc.oa.2021-0153] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
The significance of atypical histological features (AHF) as risk factors for recurrence in benign meningioma is not well understood. This study examined risk factors of World Health Organization (WHO) Grade I meningioma (GIM) recurrence, focusing on AHF. We investigated 150 consecutive newly diagnosed GIM patients who had more than one year of follow-up after resection in our hospital between January 2007 and March 2018. The following factors were reviewed retrospectively: age, sex, tumor location, extent of resection, MIB-1 index, mitotic figures, number and distribution of AHF, and recurrence. The patients were grouped according to the presence or absence of recurrence and comparatively examined. Recurrence was observed in 10 cases (6.7%). Univariate analysis showed that patients with recurrence had a significantly higher MIB-1 index (2.0 vs. 4.3; p = 0.006) and a significantly higher proportion of male patients (21.4% vs. 70.0%; p = 0.002) and patients with sheet-like growth (6.42% vs. 30.0%; p = 0.04). In multivariate analysis, skull base location (odds ratio [OR] 31.424; 95% confidence interval [CI] 1.74–569), gross total resection (OR 0.130; 95% CI 0.0189–0.897), and MIB-1 index (OR 1.939; 95% CI 1.19–3.15) were significantly associated with recurrence. Our study revealed that skull base location, subtotal resection, and high MIB-1 index were independent risk factors for recurrence. Only the presence of sheet-like growth had a significantly higher incidence in patients with recurrence in univariate analysis of AHF. Multivariate analysis found no significant association. Sheet-like growth may be involved in malignancy and recurrence of benign meningioma.
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Affiliation(s)
- Keitaro Chiba
- Department of Neurosurgery, Tokyo Medical and Dental University
| | | | | | - Akihito Sato
- Department of Neurosurgery, Tokyo Medical and Dental University
| | - Yasuhiro Murota
- Department of Neurosurgery, Tokyo Medical and Dental University
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22
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Nakasu Y, Mitsuya K, Nakasu S, Deguchi S, Hayashi N. Outcomes of Preserving the Hypertrophic Arachnoid Membrane in the Brain-meningioma Interface: Long-term Follow-up. Neurol Med Chir (Tokyo) 2021; 62:80-88. [PMID: 34719581 PMCID: PMC8841235 DOI: 10.2176/nmc.oa.2021-0209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abnormal hypertrophic arachnoid membranes are often observed in the brain–meningioma interface during microsurgery. They contain fibrosis and tumor cell clusters; however, preservation of the membranes does not always cause recurrence from the brain surface, and the optimal treatments in the interface remain unclear. We investigated the incidence of recurrence on the brain surface following extra-arachnoid dissection with an approach emphasizing preservation of the arachnoid membranes in meningiomas of World Health Organization (WHO) Grade I. The features of dissection cleavages in the interface were prospectively recorded at surgery. The patients were followed up with MR imaging regularly. In total, 111 patients were included. The median follow-up time was 97.0 (interquartile range [IQR] 70.0–124.0) months. The cleavages in the interface were classified into three subgroups: the Extra-H group (n = 56) with extra-arachnoid resection and preservation of hypertrophic arachnoid membranes, the Extra-N group (n = 39) with extra-arachnoid resection having normal membranes, and the Subpial resection group (n = 16). Tumors recurred in 13 (11.7%) patients at both the brain and dura mater (n = 1) or at the dura mater alone (n = 12). The median recurrence-free survival (RFS) of all recurrences was significantly related to the Simpson grades (P <0.01). For brain surface recurrence, the median RFS was not related to the subgroups. The Karnofsky Performance Scores (KPSs) significantly improved in the patients except for the Subpial group at 3 months after surgery. This study revealed that hypertrophic arachnoid membranes preserved on the brain surface rarely caused recurrence from the brain in WHO Grade I meningiomas after a long-term follow-up.
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Affiliation(s)
- Yoko Nakasu
- Division of Neurosurgery, Shizuoka Cancer Center.,Department of Neurosurgery, Shiga University of Medical Science
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23
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Abreu PG, Pappamikail L, Pontinha C, Drago J, Lourenço JA, Romero C, Teles P, Correia JP. Case report: Rare convexity meningeal chondroma mimicking a meningioma. Surg Neurol Int 2021; 12:426. [PMID: 34513189 PMCID: PMC8422430 DOI: 10.25259/sni_558_2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Accepted: 07/22/2021] [Indexed: 11/08/2022] Open
Abstract
Background: Intracranial chondromas account for 0.2–0.3% of all intracranial neoplastic lesions and less than a quarter arise in the convexity or falx. Despite its benign nature, exceedingly rare malignant transformations exist. The misdiagnosis with meningiomas is frequent and may be related with chondromas’ similar insidious clinical presentation and imaging features. Standalone surgery is advised and complete resection provides the definitive treatment. Case Description: A 44-year-old female presents with insidious headache, visual disturbances, and papilledema. The imaging studies were compatible with frontal parasagittal meningioma. Surgery revealed a meningeal based mass, mostly avascular and with a well-demarked surgical plane from the brain parenchyma. Complete resection with meningeal margins was achieved and the histopathologic examination revealed a chondroma. The patient symptoms subsided and no surgical complications existed. Conclusion: Intracranial convexity chondromas constitute a rare differential diagnosis for meningiomas. The present case reinforces the current scarce data and serves as reminder for clinicians diagnosing and treating intracranial tumors.
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Affiliation(s)
- Pedro Gonçalo Abreu
- Department of Neurosurgery, Centro Hospitalar Universitário do Algarve, Faro, Portugal
| | - Lia Pappamikail
- Department of Neurosurgery, Centro Hospitalar Universitário do Algarve, Faro, Portugal
| | - Carlos Pontinha
- Department of Anatomical Pathology, Centro Hospitalar Universitário de Lisboa Central, Lisboa, Portugal
| | - José Drago
- Department of Radiology, Centro Hospitalar Universitário do Algarve, Faro, Portugal
| | - José Artur Lourenço
- Department of Neurosurgery, Centro Hospitalar Universitário do Algarve, Faro, Portugal
| | - Clara Romero
- Department of Neurosurgery, Centro Hospitalar Universitário do Algarve, Faro, Portugal
| | - Pedro Teles
- Department of Neurosurgery, Centro Hospitalar Universitário do Algarve, Faro, Portugal
| | - Joaquim Pedro Correia
- Department of Neurosurgery, Centro Hospitalar Universitário do Algarve, Faro, Portugal
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24
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Kimura Y, Wanibuchi M, Akiyama Y, Mikami T, Mikuni N. Preserved arachnoid membrane acts as a predictor of postoperative visual improvement in clinoidal meningioma. Clin Neurol Neurosurg 2021; 208:106874. [PMID: 34418702 DOI: 10.1016/j.clineuro.2021.106874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 07/27/2021] [Accepted: 08/02/2021] [Indexed: 11/19/2022]
Abstract
OBJECTIVES Improvement of patient visual outcome is very important in the treatment of clinoidal meningioma (CLM). The purpose of this study is to determine the association between arachnoid preservation and visual outcome. PATIENTS Fifteen patients with CLMs that caused visual impairment underwent surgery in our hospital. The patients included 4 men and 11 women, and the mean age was 53.3 years. METHODS The clinical findings of these patients were retrospectively reviewed. We divided the patients into two groups based on the presence or absence of the arachnoid membrane. Group 1 comprised cases in which arachnoid preservation was intraoperatively confirmed. Group 2 comprised cases in which the arachnoid membrane was not preserved. The Landolt C chart was used to evaluate visual acuity, and dynamic visual field tests using Goldmann perimetry were used to evaluate the visual field. Results were compared before and after surgery. RESULTS The visual acuity of the ipsilateral eye was significantly improved in Group 1 (p = 0.038). There were no other significant differences between the two groups in terms of tumor volume, patient age, and symptom duration. CONCLUSIONS Patients in which arachnoid preservation could be intraoperatively confirmed had good improvement in visual acuity. Further research with an increased number of cases is needed to confirm these findings.
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Affiliation(s)
- Yusuke Kimura
- Department of Neurosurgery, Sapporo Medical University School of Medicine, Sapporo, Hokkaido, Japan
| | - Masahiko Wanibuchi
- Department of Neurosurgery, Osaka Medical College, Takatsuki, Osaka, Japan
| | - Yukinori Akiyama
- Department of Neurosurgery, Sapporo Medical University School of Medicine, Sapporo, Hokkaido, Japan
| | - Takeshi Mikami
- Department of Neurosurgery, Sapporo Medical University School of Medicine, Sapporo, Hokkaido, Japan
| | - Nobuhiro Mikuni
- Department of Neurosurgery, Sapporo Medical University School of Medicine, Sapporo, Hokkaido, Japan.
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Boto J, Guatta R, Fitsiori A, Hofmeister J, Meling TR, Vargas MI. Is Contrast Medium Really Needed for Follow-up MRI of Untreated Intracranial Meningiomas? AJNR Am J Neuroradiol 2021; 42:1421-1428. [PMID: 34117017 DOI: 10.3174/ajnr.a7170] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 03/08/2021] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Recent concerns relating to tissue deposition of gadolinium are favoring the use of noncontrast MR imaging whenever possible. The purpose of this study was to assess the necessity of gadolinium contrast for follow-up MR imaging of untreated intracranial meningiomas. MATERIALS AND METHODS One-hundred twenty-two patients (35 men, 87 women) with meningiomas who underwent brain MR imaging between May 2007 and May 2019 in our institution were included in this retrospective cohort study. We analyzed 132 meningiomas: 73 non-skull base (55%) versus 59 skull base (45%), 93 symptomatic (70%) versus 39 asymptomatic (30%). Fifty-nine meningiomas underwent an operation: 54 World Health Organization grade I (92%) and 5 World Health Organization grade II (8%). All meningiomas were segmented on T1 3D-gadolinium and 2D-T2WI. Agreement between T1 3D-gadolinium and 2D-T2WI segmentations was assessed by the intraclass correlation coefficient. RESULTS The mean time between MR images was 1485 days (range, 760-3810 days). There was excellent agreement between T1 3D-gadolinium and T2WI segmentations (P < .001): mean tumor volume (T1 3D-gadolinium: 9012.15 [SD, 19,223.03] mm3; T2WI: 8528.45 [SD, 18,368.18 ] mm3; intraclass correlation coefficient = 0.996), surface area (intraclass correlation coefficient = 0.989), surface/volume ratio (intraclass correlation coefficient = 0.924), maximum 3D diameter (intraclass correlation coefficient = 0.986), maximum 2D diameter in the axial (intraclass correlation coefficient = 0.990), coronal (intraclass correlation coefficient = 0.982), and sagittal planes (intraclass correlation coefficient = 0.985), major axis length (intraclass correlation coefficient = 0.989), minor axis length (intraclass correlation coefficient = 0.992), and least axis length (intraclass correlation coefficient = 0.988). Tumor growth also showed good agreement (P < .001), estimated as a mean of 461.87 [SD, 2704.1] mm3/year on T1 3D-gadolinium and 556.64 [SD, 2624.02 ] mm3/year on T2WI. CONCLUSIONS Our results show excellent agreement between the size and growth of meningiomas derived from T1 3D-gadolinium and 2D-T2WI, suggesting that the use of noncontrast MR imaging may be appropriate for the follow-up of untreated meningiomas, which would be cost-effective and avert risks associated with contrast media.
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Affiliation(s)
- J Boto
- From the Division of Neuroradiology (J.B., A.F., M.I.V.), Geneva University Hospital and Faculty of Medicine of Geneva, Geneva, Switzerland
| | - R Guatta
- Division of Neurosurgery (R.G., T.R.M.), Lugano Regional Hospital (Civic), Lugano, Switzerland
| | - A Fitsiori
- From the Division of Neuroradiology (J.B., A.F., M.I.V.), Geneva University Hospital and Faculty of Medicine of Geneva, Geneva, Switzerland
| | - J Hofmeister
- Division of Radiology (J.H.), Geneva University Hospital and Faculty of Medicine of Geneva, Geneva, Switzerland
| | - T R Meling
- Division of Neurosurgery (R.G., T.R.M.), Lugano Regional Hospital (Civic), Lugano, Switzerland
| | - M I Vargas
- From the Division of Neuroradiology (J.B., A.F., M.I.V.), Geneva University Hospital and Faculty of Medicine of Geneva, Geneva, Switzerland
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The Impact of 5-Year Tumor Doubling Time to Predict the Subsequent Long-Term Natural History of Asymptomatic Meningiomas. World Neurosurg 2021; 151:e943-e949. [PMID: 34020064 DOI: 10.1016/j.wneu.2021.05.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 05/07/2021] [Accepted: 05/08/2021] [Indexed: 11/22/2022]
Abstract
OBJECTIVE Meningiomas are the most frequent primary brain tumors. The long-term natural history of asymptomatic meningiomas remains unclear and difficult to predict accurately, however. The purpose of this study was to determine the subsequent course of asymptomatic meningiomas preceded by 5 years of no treatment. METHODS We retrospectively studied patients with radiologically suspected intracranial asymptomatic meningiomas preceded by 5 years of no treatment. We volumetrically measured the lesions' chronological changes during the initial 5 years to obtain the 5-year tumor doubling time (5y-TdT). RESULTS A total of 201 cases met the inclusion criteria. They were further divided into 3 subgroups: those who remained asymptomatic (group A; 174 cases), those who developed neurological symptoms and underwent treatment (group B; 8 cases), and those who received intentional intervention for a preventative reason (group C; 19 cases). 5y-TdT of group B (median: 46.5 months) was significantly shorter than that of group A (median: 216.3 months) (P < 0.001). Progression-free survival (PFS) was significantly different between tumors that exhibited 5y-TdT ≥ 98.8 months and <98.8 months (P < 0.001). When we combined groups B and C and set the PFS endpoint as either disease progression or treatment, we found that more than 20% of patients would require treatment within 15 years. CONCLUSIONS The present study revealed the subsequent course of asymptomatic meningiomas after 5 years of no treatment and demonstrated that 5y-TdT is useful to detect patients who may require treatment.
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Ikawa F, Isobe N, Michihata N, Oya S, Ohata K, Saito K, Yoshida K, Fushimi K, Yasunaga H, Tominaga T, Kurisu K. In-Hospital Complications After Surgery in Elderly Patients with Asymptomatic or Minor Symptom Meningioma: A Nationwide Registry Study. World Neurosurg 2021; 148:e459-e470. [PMID: 33444840 DOI: 10.1016/j.wneu.2021.01.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 01/03/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND Asymptomatic or minor symptom meningiomas (AMSMs) in the elderly are incidental findings, with no consensus reached on the optimal management strategy. In the present study, we aimed to determine the surgical risk factors for elderly patients with AMSMs using a nationwide registry database in Japan. METHODS We identified patients with surgically treated AMSMs using the Diagnosis Procedure Combination database from 2010 to 2015 and reviewed the medical records for age (<65 years; pre-elderly, 65-74 years; and elderly, ≥75 years), sex, Barthel index (BI) score, medical history, tumor location, and complications. An AMSM was defined by a BI score of 100 points at admission. The risk factors for all stroke complications, BI deterioration at discharge, and in-hospital mortality were determined using multivariate logistic regression analyses. RESULTS From a total of 10,535 patients with meningioma, 6628 were included. Advanced age was a significant risk factor (odds ratio, 3.54; 95% confidence interval, 2.80-4.46) for BI deterioration but not for all-stroke complications or in-hospital mortality. Midline and posterior fossa tumors, diabetes mellitus, and chronic heart disease were significant risk factors for in-hospital mortality. CONCLUSIONS For elderly patients with surgically treated AMSMs, advanced age was a prominent risk factor for functional decline at discharge. Our study identified several factors that should be evaluated before proceeding with surgery for AMSMs in elderly and pre-elderly patients. These findings could, not only improve decision-making among clinicians treating patients with AMSMs, but also help in predicting the results of surgery for elderly patients with AMSMs.
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Affiliation(s)
- Fusao Ikawa
- Department of Neurosurgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan; Department of Neurosurgery, Shimane Prefectural Central Hospital, Izumo, Japan.
| | - Naoyuki Isobe
- Department of Neurosurgery, JA Onomichi General Hospital, Onomichi, Japan
| | - Nobuaki Michihata
- Department of Clinical Epidemiology and Health Economics, School of Public Health, The University of Tokyo, Tokyo, Japan
| | - Soichi Oya
- Department of Neurosurgery, Saitama Medical Center, Saitama, Japan
| | - Kenji Ohata
- Department of Neurosurgery, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Kiyoshi Saito
- Department of Neurosurgery, Fukushima Medical University, Fukushima, Japan
| | - Kazunari Yoshida
- Department of Neurosurgery, Keio University School of Medicine, Tokyo, Japan
| | - Kiyohide Fushimi
- Department of Health Policy and Informatics, Tokyo Medical and Dental University Graduate School, Tokyo, Japan
| | - Hideo Yasunaga
- Department of Clinical Epidemiology and Health Economics, School of Public Health, The University of Tokyo, Tokyo, Japan
| | - Teiji Tominaga
- Department of Neurosurgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Kaoru Kurisu
- Department of Neurosurgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
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Akyoldaş G, Samancı Y, Yılmaz M, Şengöz M, Peker S. Long-term results of gamma knife radiosurgery for foramen magnum meningiomas. Neurosurg Rev 2020; 44:2667-2673. [PMID: 33244665 DOI: 10.1007/s10143-020-01446-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 11/11/2020] [Accepted: 11/18/2020] [Indexed: 11/28/2022]
Abstract
Outcomes of 37 patients of foramen magnum meningioma (FMM) were evaluated, and the related literature was reviewed to determine the efficacy of Gamma Knife radiosurgery (GKRS) for treating patients with FMM. We present the largest series reported from a single institution with the longest follow-up to date. The database of patients who underwent GKRS for FMM between 2007 and 2019 was evaluated retrospectively. A total of 37 patients with radiological and pathological features consistent with FMM were included in this series. Thirty-three patients were female, and 4 were male. The median age was 58 years (range, 23-74 years). The most common symptom at diagnosis was headache (64.9%). Twelve patients had a history of microsurgical resection. The median duration from the initial onset of symptoms to GKRS was 12 months (range 1-140 months). Among the 37 tumors, eight (21.6%) were located ventrally, 24 (64.9%) laterally, and five (13.5%) dorsally. The median target volume was 3.30 cm3 (range, 0.6-17.6 cm3). Thirty-five patients (95%) were treated with single fraction GKRS, and two patients (5%) were treated with hypofractionated GKRS. The median clinical follow-up was 80 months (range, 18-151 months), while the median radiological follow-up was 84 months (range, 18-144 months). At the last clinical follow-up after GKRS, 27 patients (73%) had improved symptoms, and none had worsened pre-GKRS symptoms. At the last radiological follow-up after GKRS, 23 tumors (62.2%) remained stable, 13 (35.1%) decreased in size, and 1 (2.7%) increased in size. Tumor control, including stable and regressed tumors, was achieved in 97.3% of patients. Our cohort demonstrates that GKRS is an effective and safe treatment for patients with either primary or recurrent/residual FMM.
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Affiliation(s)
- Göktuğ Akyoldaş
- Department of Neurosurgery, Koç University School of Medicine, Istanbul, Turkey.
| | - Yavuz Samancı
- Department of Neurosurgery, Koç University Hospital, Istanbul, Turkey
| | - Meltem Yılmaz
- Medical Biotechnology, Acıbadem Mehmet Ali Aydınlar University, Istanbul, Turkey
| | - Meriç Şengöz
- Department of Radiation Oncology, School of Medicine, Acıbadem Mehmet Ali Aydınlar University, Istanbul, Turkey
| | - Selçuk Peker
- Department of Neurosurgery, Koç University School of Medicine, Istanbul, Turkey
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Fu J, Wu L, Peng C, Yang X, You H, Cao L, Deng Y, Yu J. Initial Gamma Knife Radiosurgery for Large or Documented Growth Asymptomatic Meningiomas: Long-Term Results From a 27-Year Experience. Front Oncol 2020; 10:598582. [PMID: 33330094 PMCID: PMC7732633 DOI: 10.3389/fonc.2020.598582] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 10/20/2020] [Indexed: 12/04/2022] Open
Abstract
Objective The aims of this study were to investigate the long-term outcomes of initial Gamma Knife radiosurgery (GKRS) for large (≥20 mm) or documented growth asymptomatic meningiomas. Design and Methods This was a single-center retrospective study. Fifty-nine patients with large (≥20 mm) or documented growth asymptomatic meningiomas undergoing initial GKRS were enrolled. The median age was 56 (range, 27–83) years. The median time of follow-up was 66.8 (range, 24.6–245.6) months, and the median tumor margin dose was 13.0 Gy (range, 11.6–22.0 Gy). Results Tumors shrunk in 35 patients (59.3%) and remained stable in 23 (39.0%). One patient (1.7%) experienced radiological progression at 54 months after GKRS. The PFS was 100%, 97%, and 97% at 3, 5, and 10 years, respectively. Nine patients (15.3%) occurred new neurological symptoms or signs at a median time of 8.1 (range, 3.0–81.6) months. The symptom PFS was 90% and 78% at 5 and 10 years, respectively. Fifteen patients (25.4%) occurred peritumoral edema (PTE) at a median time of 7.2 (range, 2.0–81.6) months. One patient underwent surgical resection for severe PTE. In univariate and multivariate analysis, Only tumor size (≥25 mm) and maximum dose (≥34 Gy) were significantly associated with PTE [hazard ratio (HR)= 3.461, 95% confidence interval (CI)=1.157-10.356, p=0.026 and HR=3.067, 95% CI=1.068-8.809, P=0.037, respectively]. Conclusions In this study, initial GKRS can provide a high tumor control rate as well as an acceptable rate of complications in large or documented growth asymptomatic meningiomas. GKRS may be an alternative initial treatment for asymptomatic meningiomas.
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Affiliation(s)
- Junyi Fu
- Department of Neurology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Lisha Wu
- Department of Medical Oncology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Chao Peng
- Department of Neurosurgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Xin Yang
- Department of Thoracic Surgery, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Hongji You
- Department of Nuclear Medicine, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Linhui Cao
- Department of Traditional Chinese Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yinhui Deng
- Department of Radiotherapy, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Jinxiu Yu
- Department of Radiotherapy, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
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Nakasu S, Notsu A, Na K, Nakasu Y. Malignant transformation of WHO grade I meningiomas after surgery or radiosurgery: systematic review and meta-analysis of observational studies. Neurooncol Adv 2020; 2:vdaa129. [PMID: 33305267 PMCID: PMC7712809 DOI: 10.1093/noajnl/vdaa129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Background The incidence and clinical features of the malignant transformation of benign meningiomas are poorly understood. This study examined the risk of the malignant transformation of benign meningiomas after surgery or stereotactic radiosurgery. Methods We systematically reviewed studies published between 1979 and 2019 using PubMed, Scopus, and other sources. We analyzed pooled data according to the PRISMA guideline to clarify the incidence rate of malignant transformation (IMT) and factors affecting malignant transformation in surgically or radiosurgically treated benign meningiomas. Results IMT was 2.98/1000 patient-years (95% confidence interval [CI] = 1.9–4.3) in 13 studies in a single-arm meta-analysis. Although the evidence level of the included studies was low, the heterogeneity of the incidence was mostly explained by the tumor location. In meta-regression analysis, skull base tumors had a significantly lower IMT than non-skull base tumors, but no gender association was observed. IMT after radiosurgery in 9 studies was 0.50/1000 person-years (95% CI = 0.02–1.38). However, a higher proportion of skull base tumors, lower proportion of males, and lower salvage surgery rate were observed in the radiosurgery group than in the surgery group. The median time to malignant change was 5 years (interquartile range = 2.5–8.2), and the median survival after malignant transformation was 4.7 years (95% CI = 3.7–8) in individual case data. Conclusion IMT of benign meningioma was significantly affected by the tumor location. Radiosurgery did not appear to increase IMT, but exact comparisons were difficult because of differences in study populations.
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Affiliation(s)
- Satoshi Nakasu
- Division of Neurosurgery, Kusatsu General Hospital, Kusatsu, Japan.,Department of Neurosurgery, Shiga University of Medical Science, Ohtsu, Japan
| | - Akifumi Notsu
- Clinical Research Center, Shizuoka Cancer Center, Nagaizumi, Japan
| | - Kiyong Na
- Department of Pathology, Kyung Hee University Hospital, Kyung Hee University College of Medicine, Seoul, South Korea
| | - Yoko Nakasu
- Department of Neurosurgery, Shiga University of Medical Science, Ohtsu, Japan.,Division of Neurosurgery, Shizuoka Cancer Center, Nagaizumi, Japan
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