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DNA methylation provides diagnostic value for meningioma recurrence in clinical practice. Acta Neurochir (Wien) 2023; 165:1323-1331. [PMID: 36920663 DOI: 10.1007/s00701-023-05550-5] [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: 12/04/2022] [Accepted: 02/14/2023] [Indexed: 03/16/2023]
Abstract
BACKGROUND Meningiomas are the most common intracranial tumors. Recent advancements in the genetic profiling of tumors have allowed information including DNA copy number analysis, mutational analysis, and RNA sequencing to be more frequently reported, in turn allowing better characterization of meningiomas. In recent years, analysis of tumor methylomes that reflects both cell-origin methylation signatures and somatically acquired DNA methylation changes has been utilized to better classify meningiomas with great success. METHOD We report DNA methylation profiling on meningiomas from 17 patients. Formalin-fixed paraffin-embedded (FFPE) meningioma tumor samples were processed, loaded onto the Infinium Methylation EPIC array, and scanned using the Illumina IScan system. Raw IDAT files were processed through the the CNS tumor classifier developed by the Molecular Neuropathology group at the German Cancer Research Center (DKFZ). Corresponding genomics were captured using targeted sequencing panels. RESULT Among the meningioma samples, 13 samples were classified as "benign," two samples as "intermediate," and the remaining three samples (from two patients) as "malignant," based on previously validated classification algorithms. In addition to tumor methylation profiling, we also present information that includes patient demographics, clinical presentations, tumor characteristics (including size and location), surgical approaches, and mutational analysis. The two patients who provided the samples with "malignant" methylation classifications had tumor recurrence, reflecting a more aggressive disease course. CONCLUSION In accordance with prior reports, our case series provides support that tumor DNA methylation profiling adds meaningful classification information and may be beneficial to incorporate in clinical practice. Our report also reveals that DNA methylation combined with WHO histology classification can more accurately predict tumor behavior than WHO classification alone.
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Liu J, Xia C, Wang G. Multi-Omics Analysis in Initiation and Progression of Meningiomas: From Pathogenesis to Diagnosis. Front Oncol 2020; 10:1491. [PMID: 32983987 PMCID: PMC7484374 DOI: 10.3389/fonc.2020.01491] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 07/13/2020] [Indexed: 12/31/2022] Open
Abstract
Meningiomas are common intracranial tumors that can be cured by surgical resection in most cases. However, the most disconcerting is high-grade meningiomas, which frequently recur despite initial successful treatment, eventually conferring poor prognosis. Therefore, the early diagnosis and classification of meningioma is necessary for the subsequent intervention and an improved prognosis. A growing body of evidence demonstrates the potential of multi-omics study (including genomics, transcriptomics, epigenomics, proteomics) for meningioma diagnosis and mechanistic links to potential pathological mechanism. This thesis addresses a neglected aspect of recent advances in the field of meningiomas at multiple omics levels, highlighting that the integration of multi-omics can reveal the mechanism of meningiomas, which provides a timely and necessary scientific basis for the treatment of meningiomas.
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Affiliation(s)
- Jiachen Liu
- Clinical Medicine, Xiangya Medical College of Central South University, Changsha, China
| | - Congcong Xia
- Clinical Medicine, Xiangya Medical College of Central South University, Changsha, China
| | - Gaiqing Wang
- Department of Neurology, Sanya Central Hospital (The Third People's Hospital of Hainan Province), Sanya, China
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Raheja A, Satyarthee GD. Sphenoid wing en plaque meningioma development following craniopharyngioma surgery and radiotherapy: Radiation-induced after three decades. Asian J Neurosurg 2017; 12:358-361. [PMID: 28761508 PMCID: PMC5532915 DOI: 10.4103/1793-5482.180946] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Radiation therapy is widely used as adjuvant or primary treatment modality of neoplastic lesions. Radiation therapy may cause an acute adverse effect such as brain edema, radiation necrosis, or delayed, for example, panhypopituitarism, vasculitis, and rare de-novo neoplasm development. However, radiation-induced meningioma (RIM) occurrence is extremely rare. A detailed PubMed and Medline search yielded only three isolated Case-reports of RIM development in craniopharyngioma cases receiving radiotherapy after surgery. All cases occurred in patients < 13-year age, with male preponderance, detected after a mean interval of 23-year, the range being 2–44 years. Two had solitary while the third had multiple meningiomas. Authors report an 8-year-old female, who was operated for craniopharyngioma and received adjuvant therapy, was asymptomatic for next 30 years, met a road traffic accident and magnetic resonance imaging brain revealed incidental right sphenoid wing en plaque meningioma. She was planned for gamma-knife therapy as unwilling for surgical intervention. Management of RIM development after radiotherapy of craniopharyngioma along with pertinent literature is reviewed briefly.
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Affiliation(s)
- Amol Raheja
- Department of Neurosurgery and Gamma Knife, All India Institute of Medical Sciences, New Delhi, India
| | - Guru Dutta Satyarthee
- Department of Neurosurgery and Gamma Knife, All India Institute of Medical Sciences, New Delhi, India
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Radiation-Induced Meningiomas: An Exhaustive Review of the Literature. World Neurosurg 2016; 97:635-644.e8. [PMID: 27713063 DOI: 10.1016/j.wneu.2016.09.094] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Revised: 09/18/2016] [Accepted: 09/23/2016] [Indexed: 12/16/2022]
Abstract
OBJECTIVE Radiation-induced meningioma (RIM) is an uncommon late risk of cranial irradiation. We conducted an exhaustive review of individual patient data to characterize RIM. METHODS Using a systematic search of the PubMed database, we performed a comprehensive literature review to characterize and investigate RIM. Student t tests were used to evaluate differences between variables. A Kaplan-Meier analysis was used to assess survival. Statistical significance was assessed using a log-rank test. RESULTS Our analysis included 251 cases of RIM. The average age at onset for the primary lesion was 13.0 ± 13.5 years, and the average radiation dose delivered to this lesion was 38.8 ± 16.8 Gy. Secondary meningiomas could be divided into grades I (140), II (55), and III (10) tumors. Thirty patients (11.9%) had multiple lesions, and 46 (18.3%) had recurrent meningiomas. The latency period between radiotherapy for primary lesions and the onset of meningiomas was 22.9 ± 11.4 years. The latency period was shorter for patients with grade III meningioma and for those in the high-dose and intermediate-dose radiation groups who received systemic chemotherapy. Aggressive meningiomas and multiple meningiomas were more common in the high-dose and intermediate-dose groups than in the low-dose group. The 5-year and 10-year survival rates for all patients with meningioma were 77.7% and 66.1%, respectively. CONCLUSIONS For patients treated with cranial radiotherapy, the risk of secondary meningioma warrants a longer follow-up period beyond the standard time frame typically designated for determining the risk of primary tumor relapse.
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Morgenstern PF, Shah K, Dunkel IJ, Reiner AS, Khakoo Y, Rosenblum MK, Gutin P. Meningioma after radiotherapy for malignancy. J Clin Neurosci 2016; 30:93-97. [PMID: 27068012 DOI: 10.1016/j.jocn.2016.02.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Accepted: 02/07/2016] [Indexed: 11/17/2022]
Abstract
Complications of radiation exposure have gained importance with increasing cancer survivorship. Secondary malignancies have been associated with cranial radiation exposure. We present our experience with intracranial radiation-induced meningioma (RIM) and discuss the implications of its presentation and natural history for patient management. Patients diagnosed with meningioma who had received radiation therapy between 1960 and 2014 were identified. Records were retrospectively reviewed for details of radiation exposure, previous malignancies, meningioma subtypes, multiplicity and pathologic descriptions, treatment and follow-up. Thirty patients were diagnosed with RIM. Initial malignancies included acute lymphocytic leukemia (33.3%), medulloblastoma (26.7%) and glioma (16.7%) at a mean age of 8.1years (range 0.04-33years). The mean radiation dose was 34Gy (range 16-60Gy) and latency time to meningioma was 26years (range 8-51years). Twenty-one patients (70%) underwent surgery. Of these, 57.1% of tumors were World Health Organization (WHO) grade I while 42.9% were WHO II (atypical). The mean MIB-1 labeling index for patients with WHO I tumors was 5.44%, with 33.3% exhibiting at least 5% staining. Mean follow-up after meningioma diagnosis was 5.8years. Mortality was zero during the follow-up period. Meningioma is an important long-term complication of therapeutic radiation. While more aggressive pathology occurs more frequently in RIM than in sporadic meningioma, it remains unclear whether this translates into an effect on survival. Further study should be aimed at delineating the risks and benefits of routine surveillance for the development of secondary neoplasms after radiation therapy.
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Affiliation(s)
- Peter F Morgenstern
- Department of Neurosurgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA; Department of Neurological Surgery, New York-Presbyterian Hospital, Weill Cornell Medical Center, New York, NY, USA.
| | - Kalee Shah
- Department of Neurosurgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA; Department of Neurological Surgery, New York-Presbyterian Hospital, Weill Cornell Medical Center, New York, NY, USA
| | - Ira J Dunkel
- Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, NY, USA; Department of Pediatrics, Weill Cornell Medical College, New York, NY, USA
| | - Anne S Reiner
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Yasmin Khakoo
- Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, NY, USA; Department of Pediatrics, Weill Cornell Medical College, New York, NY, USA; Department of Neurology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Marc K Rosenblum
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Philip Gutin
- Department of Neurosurgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA; Department of Neurological Surgery, New York-Presbyterian Hospital, Weill Cornell Medical Center, New York, NY, USA
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Chourmouzi D, Papadopoulou E, Kontopoulos A, Drevelegas A. Radiation-induced intracranial meningioma and multiple cavernomas. BMJ Case Rep 2013; 2013:bcr-2013-010041. [PMID: 24051144 DOI: 10.1136/bcr-2013-010041] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Brain irradiation has several well-known long-term side effects, including radiation-induced neoplasms and vasculopathy. In this case report, we describe an extremely rare case of meningioma and 15 cavernomas developing in a 29-year-old man, 19 years after cranial irradiation for posterior cranial fossa medulloblastoma. To our knowledge, this is the first case of a radiation-induced meningioma accompanied by this many radiation-induced cavernous angiomas.
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Affiliation(s)
- Danai Chourmouzi
- Department of Diagnostic Radiology, Interbalcan Medical Centre, Thessaloniki, Greece
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Santos MV, Furlanetti L, Valera ET, Brassesco MS, Tone LG, de Oliveira RS. Pediatric meningiomas: a single-center experience with 15 consecutive cases and review of the literature. Childs Nerv Syst 2012; 28:1887-96. [PMID: 22669518 DOI: 10.1007/s00381-012-1823-8] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2012] [Accepted: 05/23/2012] [Indexed: 11/24/2022]
Abstract
OBJECTIVE The goal of this study was to determine the epidemiology, clinical presentation, associated factors, pathological features, and treatment outcome of pediatric meningiomas in a single-center institution. METHODS Clinical data of 15 patients under 18 years of age operated on for meningiomas from January 1994 to December 2010 were reviewed. RESULTS The study group included nine males and six females (mean age of 13 years at surgery). The most common symptoms at presentation were headaches in 6 out of 15 (40 %), raised intracranial pressure in 3 out of 15 (20 %), and seizures in 3 out of 15 (20 %). Sole operated tumors were found in 12 out of 15 (80 %), whose location is as follows: parasagittal in 4 out of 12 (33.3 %), 2 in the convexity (16.6 %), 2 at the skull base (16.6 %), and 4 in other sites (33.3 %). Six children presented with radiation-induced (RT) meningiomas and five had evidence of neurofibromatosis type 2 (NF2). Three patients had multiple meningiomas (all of them had NF2). Simpson's grade I excision was achieved in 12 out of 15 (80 %). On histopathology, 11 out of 15 (73.3 %) were grade I and 4 out of 15 (26.6 %) were grade II (all of them atypical). Five tumors (33.3 %) recurred, four of which had RT or NF2. During the mean follow-up period of 5 years, 12 out of 15 (80 %) had a good outcome (GOS=5). CONCLUSIONS Childhood meningiomas are uncommon lesions with a slight male predominance. Absence of large series with long follow-up precludes any definite conclusions on the clinical course and outcome of these tumors. Associated factors (such as RT and NF2), location, and extent of excision appear to be more important than histopathological grade in predicting outcome.
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Affiliation(s)
- Marcelo Volpon Santos
- Division of Pediatric Neurosurgery of the Department of Surgery and Anatomy, University Hospital of Ribeirão Preto Medical School, University of São Paulo, 14049-900, Ribeirão Preto, Brazil
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Brassesco MS, Valera ET, Neder L, Pezuk JA, Oliveira RS, Scrideli CA, Tone LG. Cytogenetic findings in pediatric radiation-induced atypical meningioma after treatment of medulloblastoma: case report and review of the literature. J Neurooncol 2012; 110:397-402. [DOI: 10.1007/s11060-012-0982-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2012] [Accepted: 10/01/2012] [Indexed: 11/24/2022]
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Elbabaa SK, Gokden M, Crawford JR, Kesari S, Saad AG. Radiation-associated meningiomas in children: clinical, pathological, and cytogenetic characteristics with a critical review of the literature. J Neurosurg Pediatr 2012; 10:281-90. [PMID: 22900483 DOI: 10.3171/2012.7.peds1251] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECT Radiation-associated meningiomas (RAMs) arise after treatment with radiation to the cranium and are recognized as clinically separate from sporadic meningiomas. Compared with their sporadic counterparts, RAMs are often aggressive or malignant, likely to be multiple, and have a high recurrence rate. However, limited information exists about the clinical, pathological, and cytogenetic features of RAMs in pediatric patients. The authors report the findings in 9 children with meningiomas following therapeutic radiation to the cranium. In addition, they performed a critical review of the English language literature on pediatric RAMs. METHODS Medical files were searched for patients who demonstrated meningiomas after a history of radiation to the brain. Only those patients in whom a meningioma occurred before the age of 18 years were included in this study. Clinical and demographic data along with the MIB-1 labeling index and cytogenetic studies were evaluated. RESULTS The patients consisted of 5 males and 4 females with a median age of 5 years (range 2-10 years) at radiation therapy. The latency period was a median of 10 years after radiation therapy (range 6-13 years). The MIB-1 labeling index was a median of 6.6% (range 4%-10%). Five patients (55.6%) displayed multiple meningiomas at the first presentation. Histological types included clear cell meningioma in 1 patient, fibroblastic meningioma in 2, chordoid meningioma in 2, meningothelial meningioma in 7 (atypical in 2 cases), xanthomatous meningioma in 1, and chordoid meningioma in 1. Cytogenetic studies showed that the loss of 22q12.2 was the most common abnormality (3 patients), followed by complex cytogenetic abnormalities (2 patients) and rearrangements between chromosomes 1 and 12 (1 patient) and a 1p deletion (1 patient). CONCLUSIONS In contrast to RAMs occurring in adults, those in pediatric patients show an increased incidence of multiplicity on first presentation and unusual histological variants, some of which are described here for the first time. There was no difference in the MIB-1 labeling index in children with RAMs as compared with that in children with non-RAMs.
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Affiliation(s)
- Samer K Elbabaa
- Departments of Neurosurgery, University of Arkansas for Medical Sciences and Arkansas Children’s Hospital, Little Rock, Arkansas 72202, USA
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Godlewski B, Drummond KJ, Kaye AH. Radiation-induced meningiomas after high-dose cranial irradiation. J Clin Neurosci 2012; 19:1627-35. [PMID: 22836037 DOI: 10.1016/j.jocn.2012.05.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2012] [Accepted: 05/07/2012] [Indexed: 10/28/2022]
Abstract
Radiation-induced meningiomas (RIM) are known to occur after high and low dose cranial radiation therapy. Currently, RIM are the most common form of radiation-induced neoplasm reported. We present the largest series of RIM induced by high dose radiation reported thus far and review the literature. Radiation therapy was most commonly given for childhood malignancy. We compared our group of 26 patients with RIM with previously published reports of RIM, and also with 364 patients with spontaneous meningioma (SM) treated at The Royal Melbourne Hospital between 2007 and 2011 with regard to age, gender, and histopathology. In our group of patients with RIM, the mean age at presentation was 38.5 years, in comparison to 60.1 years for patients with SM. The female-to-male ratio was 1.88:1 in RIM compared to 2.37:1 for SM. Of the RIM, 86.5% were World Health Organization (WHO) grade I and 11.5% were grade II (atypical) meningiomas. There were no anaplastic or malignant RIM. Of the SM, 91.5% were WHO grade I, 7.1% WHO grade II, and 1.4% WHO grade III meningiomas. The characteristics of RIM induced by low dose radiation therapy have been well described. It is timely to consider RIM due to high dose radiation, which is now frequently employed in the management of various childhood and other malignancies.
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Affiliation(s)
- Bartosz Godlewski
- Department of Neurosurgery and Peripheral Nerves Surgery, WAM University Hospital in Lodz, Medical University in Lodz, 113 Zeromskiego Street, Lodz 90-549, Poland.
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Thuijs NB, Uitdehaag BMJ, Van Ouwerkerk WJR, van der Valk P, Vandertop WP, Peerdeman SM. Pediatric meningiomas in The Netherlands 1974-2010: a descriptive epidemiological case study. Childs Nerv Syst 2012; 28:1009-15. [PMID: 22543431 PMCID: PMC3376254 DOI: 10.1007/s00381-012-1759-z] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2012] [Accepted: 04/03/2012] [Indexed: 11/15/2022]
Abstract
OBJECTIVE The purpose of this study was to review the epidemiology and the clinical, radiological, pathological, and follow-up data of all surgically treated pediatric meningiomas during the last 35 years in The Netherlands. METHODS Patients were identified in the Pathological and Anatomical Nationwide Computerized Archive database, the nationwide network and registry of histopathology and cytopathology in The Netherlands. Pediatric patients of 18 years or younger at first operation in 1974-2009 with the diagnosis meningioma were included. Clinical records, follow-up data, radiological findings, operative reports, and pathological examinations were reviewed. RESULTS In total, 72 patients (39 boys) were identified. The incidence of operated meningiomas in the Dutch pediatric population is 1:1,767,715 children per year. Median age at diagnosis was 13 years (range 0-18 years). Raised intracranial pressure and seizures were the most frequent signs at presentation. Thirteen (18 %) patients had neurofibromatosis type 2 (NF2). Fifty-three (74 %) patients had a meningioma World Health Organization grade I. Total resection was achieved in 35 of 64 patients. Fifteen patients received radiotherapy postoperatively. Mean follow-up was 4.8 years (range 0-27.8 years). Three patients died as a direct result of their meningioma within 3 years. Four patients with NF2 died as a result of multiple tumors. Nineteen patients had disease progression, requiring additional treatment. CONCLUSION Meningiomas are extremely rare in the pediatric population; 25 % of all described meningiomas show biological aggressive behavior in terms of disease progression, requiring additional treatment. The 5-year survival is 83.9 %, suggesting that the biological behavior of pediatric menigiomas is more aggressive than that of its adult counterparts.
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Affiliation(s)
- Nikki B. Thuijs
- Neurosurgical Center Amsterdam, VU University Medical Center, PO Box 7057, 1007 MB Amsterdam, The Netherlands
| | - Bernard M. J. Uitdehaag
- Department of Epidemiology and Biostatistics, VU University Medical Center, PO Box 7057, 1007 MB Amsterdam, The Netherlands
| | - Willem J. R. Van Ouwerkerk
- Meningioma Group Amsterdam, VU University Medical Center, PO Box 7057, 1007 MB Amsterdam, The Netherlands ,Neurosurgical Center Amsterdam, VU University Medical Center, PO Box 7057, 1007 MB Amsterdam, The Netherlands
| | - Paul van der Valk
- Department of Pathology, VU University Medical Center, PO Box 7057, 1007 MB Amsterdam, The Netherlands
| | - W. Peter Vandertop
- Meningioma Group Amsterdam, VU University Medical Center, PO Box 7057, 1007 MB Amsterdam, The Netherlands ,Neurosurgical Center Amsterdam, VU University Medical Center, PO Box 7057, 1007 MB Amsterdam, The Netherlands
| | - Saskia M. Peerdeman
- Meningioma Group Amsterdam, VU University Medical Center, PO Box 7057, 1007 MB Amsterdam, The Netherlands ,Neurosurgical Center Amsterdam, VU University Medical Center, PO Box 7057, 1007 MB Amsterdam, The Netherlands
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Nakamura H, Makino K, Ushio Y, Arima R, Kuratsu JI. Therapy-associated secondary tumors in patients with non-germinomatous malignant germ cell tumors. J Neurooncol 2011; 105:359-64. [PMID: 21533838 DOI: 10.1007/s11060-011-0597-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2010] [Accepted: 04/20/2011] [Indexed: 11/30/2022]
Abstract
We report three patients with non-germinomatous malignant germ cell tumor (NGMGCT) who developed therapy-associated secondary tumors. They were diagnosed as having NGMGCT by elevated serum levels of α-fetoprotein (AFP), human chorionic gonadotropin (HCG), or β-HCG. Preoperatively, all patients received a combination of etoposide and platinum-based chemotherapy and radiotherapy; neo-adjuvant therapy (NAT) was followed by complete excision of the residual tumor. Postoperatively, all underwent maintenance chemotherapy and all remained free of NGMGCT without recurrence. However, they developed therapy-associated secondary tumors, i.e. glioblastoma, meningioma, or cavernous angioma after 10.1, 9.8, and 8.2 years, respectively. The patient with glioblastoma died one year after its detection. The other two patients are currently alive; the meningioma was completely removed and the cavernous angioma is being monitored without additional treatment. To the best of our knowledge, therapy-associated secondary tumors in patients treated for NGMGCT are rare.
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Affiliation(s)
- Hideo Nakamura
- Department of Neurosurgery, Graduate School of Life Sciences, Kumamoto University, 1-1-1 Honjo, Kumamoto, 860-8556, Japan.
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Pediatric meningioma: current approaches and future direction. J Neurooncol 2011; 104:1-10. [DOI: 10.1007/s11060-010-0503-3] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2010] [Accepted: 12/13/2010] [Indexed: 01/09/2023]
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