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Wang JZ, Agnihotri S, Zadeh G. Radiation-Induced Meningiomas. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1416:159-173. [PMID: 37432626 DOI: 10.1007/978-3-031-29750-2_12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 07/12/2023]
Abstract
While the majority of meningiomas encountered clinically are sporadic, there is a rare subset that arises due to early life or childhood irradiation. Sources of this radiation exposure may be due to treatment of other cancers such as acute childhood leukemia, other central nervous system tumors such as medulloblastoma, the treatment of tinea capitis (rarely and historically), or environmental exposures, as seen in some of the Hiroshima and Nagasaki atomic bomb survivors. Regardless of their etiology, however, radiation-induced meningiomas (RIMs) tend to be highly biologically aggressive irrespective of WHO grade and are usually refractory to the conventional treatment modalities of surgery and/or radiotherapy. In this chapter, we will discuss these RIMs in their historical context, their clinical presentation, their genomic features and ongoing efforts to better understand these tumors from a biological standpoint in order to develop better, more efficacious therapies for these patients.
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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.
| | - Sameer Agnihotri
- University of Pittsburgh Hillman Cancer Center, Pittsburgh, PA, USA
| | - 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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Yamanaka R, Abe E, Sato T, Hayano A, Takashima Y. Secondary Intracranial Tumors Following Radiotherapy for Pituitary Adenomas: A Systematic Review. Cancers (Basel) 2017; 9:cancers9080103. [PMID: 28786923 PMCID: PMC5575606 DOI: 10.3390/cancers9080103] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2017] [Revised: 08/02/2017] [Accepted: 08/04/2017] [Indexed: 02/02/2023] Open
Abstract
Pituitary adenomas are often treated with radiotherapy for the management of tumor progression or recurrence. Despite the improvement in cure rates, patients treated by radiotherapy are at risk of development of secondary malignancies. We conducted a comprehensive literature review of the secondary intracranial tumors that occurred following radiotherapy to pituitary adenomas to obtain clinicopathological characteristics. The analysis included 48 neuroepithelial tumors, 37 meningiomas, and 52 sarcomas which were published between 1959–2017, although data is missing regarding overall survival and type of irradiation in a significant proportion of the reports. The average onset age for the pituitary adenoma was 37.2 ± 14.4 years and the average latency period before the diagnosis of the secondary tumor was 15.2 ± 8.7 years. Radiotherapy was administered in pituitary adenomas at an average dose of 52.0 ± 19.5 Gy. The distribution of pituitary adenomas according to their function was prolactinoma in 10 (7.2%) cases, acromegaly in 37 (27.0%) cases, Cushing disease in 4 (2.9%) cases, PRL+GH in 1 (0.7%) case, non-functioning adenoma in 57 (41.6%) cases. Irradiation technique delivered was lateral opposing field in 23 (16.7%) cases, 3 or 4 field technique in 27 (19.6%) cases, rotation technique in 10 (7.2%) cases, radio surgery in 6 (4.3%) cases. Most of the glioma or sarcoma had been generated after lateral opposing field or 3/4 field technique. Fibrosarcomas were predominant before 1979 (p < 0.0001). The median overall survival time for all neuroepithelial tumors was 11 months (95% confidence intervals (CI), 3–14). Patients with gliomas treated with radiotherapy exhibited a non-significant positive trend with longer overall survival. The median overall survival time for sarcoma cases was 6 months (95% CI, 1.5–9). The median survival time in patients with radiation and/or chemotherapy for sarcomas exhibited a non-significant positive trend with longer overall survival. In patients treated with radiotherapy for pituitary adenomas, the risk of secondary tumor incidence warrants a longer follow up period. Moreover, radiation and/or chemotherapy should be considered in cases of secondary glioma or sarcoma following radiotherapy to the pituitary adenomas.
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Affiliation(s)
- Ryuya Yamanaka
- Laboratory of Molecular Target Therapy for Cancer, Graduate School for Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan.
| | - Eisuke Abe
- Division of Radiation Oncology, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8122, Japan.
| | - Toshiteru Sato
- Department of Radiology, Nagaoka Chuo General Hospital, Nagaoka 940-8653, Japan.
| | - Azusa Hayano
- Laboratory of Molecular Target Therapy for Cancer, Graduate School for Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan.
| | - Yasuo Takashima
- Laboratory of Molecular Target Therapy for Cancer, Graduate School for Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan.
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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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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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Paulino AC, Ahmed IM, Mai WY, Teh BS. The Influence of Pretreatment Characteristics and Radiotherapy Parameters on Time Interval to Development of Radiation-Associated Meningioma. Int J Radiat Oncol Biol Phys 2009; 75:1408-14. [DOI: 10.1016/j.ijrobp.2009.01.052] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2008] [Revised: 01/04/2009] [Accepted: 01/08/2009] [Indexed: 11/26/2022]
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Korenkov AI, Imhof HG, Brandner S, Taub E, Huguenin PU, Gaab MR, Yonekawa Y. Growth Retardation and Bilateral Cataracts Followed by Anaplastic Meningioma 23 Years after High-Dose Cranial and Whole-Body Irradiation for Acute Lymphoblastic Leukemia: Case Report and Review of the Literature. J Neurooncol 2005; 74:195-9. [PMID: 16193392 DOI: 10.1007/s11060-004-6151-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
We report a case of meningioma diagnosed 23 years after high-dose cranial and whole-body irradiation for the treatment of acute lymphocytic leukemia (ALL). Radiotherapy in this case also caused early radiation injury to the lenses and the pituitary gland, with growth retardation and mineralizing angiopathy. Radiation-induced meningiomas are more commonly malignant, more commonly multiple, and more likely to recur after resection than non-radiation-induced meningiomas. Survivors of childhood ALL treated with high-dose cranial irradiation are at risk both for early radiation injury in radiosensitive organs, such as the lens and pituitary gland, and for the later development of a radiation-induced meningioma.
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Affiliation(s)
- Alexei I Korenkov
- Department of Neurosurgery, University Greifswald, Sauerbruchstrasse, 17487 Greifswald, Germany.
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Al-Mefty O, Topsakal C, Pravdenkova S, Sawyer JR, Harrison MJ. Radiation-induced meningiomas: clinical, pathological, cytokinetic, and cytogenetic characteristics. J Neurosurg 2004; 100:1002-13. [PMID: 15200115 DOI: 10.3171/jns.2004.100.6.1002] [Citation(s) in RCA: 142] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Object. Radiation-induced meningiomas are known to occur after high- and low-dose cranial radiation therapy. The goal of this study was to discern the distinguishing findings and characteristics of radiation-induced meningiomas.
Methods. The records of 16 patients (seven men and nine women) who fulfilled the criteria for radiation-induced meningiomas were retrospectively reviewed. Clinical, histopathological, cytokinetic, and cytogenetic findings as well as the patients' outcome were analyzed.
The mean age of the patients was 38.8 years and the mean tumor latency was 26.5 years. Five patients had multiple meningiomas in the irradiated field. The recurrence rate was 100% after the initial resection; 62% of patients had a second recurrence and 17% had a third recurrence. Thirty-eight percent of patients had atypical or malignant histopathological findings. The presence of progesterone receptors and low proliferation indices in these patients did not correlate with benign tumor behavior. Cytogenetic analysis showed multiple clonal aberrations in all tumors studied. The most frequent aberrations were found on chromosomes 1p, 6q, and 22. Derivative, lost, or additional chromosome 1p was found in 89% of cases and loss or deletion on chromosome 6 was found in 67%.
Conclusions. The age of patients at presentation with meningioma and the latency period of radiation-induced meningiomas are dose related. These tumors are more aggressive and are certain to recur, have a higher histopathological grade, and are associated with complex cytogenetic aberrations particularly involving 1p and 6q.
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Affiliation(s)
- Ossama Al-Mefty
- University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205, USA.
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Jew SY, Bartley GB, Salomao DR, Garrity JA, Piepgras DG, Bradley EA. Radiation-induced meningiomas involving the orbit. Ophthalmic Plast Reconstr Surg 2001; 17:362-8. [PMID: 11642493 DOI: 10.1097/00002341-200109000-00011] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE To review the clinical features and outcomes of patients with radiation-induced meningiomas involving the orbit. DESIGN Retrospective case series. PARTICIPANTS Eight patients with radiation-induced meningiomas affecting the orbit. METHODS Clinical and pathologic data of the patients were reviewed. MAIN OUTCOME MEASURES Age at diagnosis, mean interval between radiation therapy and meningioma diagnosis, tumor recurrence, histologic atypia, and mean follow-up time after initial diagnosis. RESULTS The mean age at diagnosis was 42 years (range, 21 years to 70 years). The mean interval between radiation therapy and meningioma diagnosis was 26 years (range, 3 years to 54 years). All patients underwent gross total resection or subtotal resection of the meningioma. Five tumors (62.5%) recurred, based on clinical findings and CT imaging. The mean interval between resection of the meningioma and recurrence was 3 years (range, 9 months to 9 years). Three patients (37.5%) had atypical meningiomas. One patient (12.5%) had multiple tumors. The mean follow-up interval was 7 years after initial diagnosis of the meningioma (range, 15 months to 19 years). CONCLUSIONS This series of radiation-induced meningiomas, the first in the ophthalmic literature, illustrates the aggressive nature of this tumor.
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Affiliation(s)
- S Y Jew
- Department of Ophthalmology, Mayo Clinic, Rochester, Minnesota 55905, USA
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Samii M, Rosahl SK, Tatagiba MS. Microsurgical removal of a petrous apex meningioma after stereotactic radiation: technical case report. Neurosurgery 2001; 49:216-9; discussion 219-20. [PMID: 11440447 DOI: 10.1097/00006123-200107000-00036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVE AND IMPORTANCE Stereotactic radiation is increasingly advocated as a primary treatment option for benign cranial base lesions. The clinical course of the patient reported herein raises questions regarding the rationale for initiation of radiotherapy to a petrous apex meningioma before microsurgery. CLINICAL PRESENTATION We report a 50-year-old woman who experienced medically refractory trigeminal pain. She was diagnosed with a meningioma around the petrous apex and treated by fractionated stereotactic radiation. After a short period of alleviation accompanied by hypesthesia, the pain returned in a previously unknown and violent fashion. INTERVENTION Complete tumor removal through a retrosigmoid intradural suprameatal approach resulted in immediate and permanent pain cessation. CONCLUSION Radiotherapy should be withheld for benign and accessible tumors of the cranial base until the option of radical microsurgical treatment has been explored.
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Affiliation(s)
- M Samii
- Department of Neurosurgery, Nordstadt Hospital, Hannover, Germany
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Samii M, Rosahl SK, Tatagiba MS. Microsurgical Removal of a Petrous Apex Meningioma after Stereotactic Radiation: Technical Case Report. Neurosurgery 2001. [DOI: 10.1227/00006123-200107000-00036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Zattara-Cannoni H, Roll P, Figarella-Branger D, Lena G, Dufour H, Grisoli F, Vagner-Capodano AM. Cytogenetic study of six cases of radiation-induced meningiomas. ACTA ACUST UNITED AC 2001; 126:81-4. [PMID: 11376799 DOI: 10.1016/s0165-4608(00)00398-8] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
It is known that, following radiotherapy, secondary cancer may occur after a long latent period. Few cytogenetic studies have been reported on tumors of the central nervous system occurring after radiotherapy. We report the cytogenetic study of six cases of radiation-induced meningiomas. In all cases, we observed the same chromosome abnormality, der(1)(1qter-->1p11::22q12-->22pter). SKY and CGH techniques allowed us to identify the chromosomal abnormalities. We suggest that a gene localized on 1p13 is involved in radiation-induced meningiomas.
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Affiliation(s)
- H Zattara-Cannoni
- Cytogenetic Oncology Laboratory, C.H.U. Timone-Marseille 264, Rue Saint-Pierre, 13385, Marseille Cedex 5, France
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Strojan P, Popović M, Jereb B. Secondary intracranial meningiomas after high-dose cranial irradiation: report of five cases and review of the literature. Int J Radiat Oncol Biol Phys 2000; 48:65-73. [PMID: 10924973 DOI: 10.1016/s0360-3016(00)00609-x] [Citation(s) in RCA: 99] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
PURPOSE To review cases of secondary intracranial meningiomas following high-dose cranial irradiation (>/= 10 Gy) identified in Slovenia between 1968 and 1998, to determine their histological profile and to review the literature on this topic. METHODS AND MATERIALS Personal files of patients treated for secondary intracranial meningioma during a 31-year period were reviewed. In cases which met the criteria for radiation-induced tumors, steroid hormone receptor and Ki-67 status were analyzed. For the literature review, computerized database systems and reference lists from respective publications were used. RESULTS Five patients (2 females, 3 males), 3-11 years old at the time of cranial irradiation, developed secondary meningioma after a latency period of 9.5-31.5 years. Three patients had multiple tumors and 2 developed recurrent disease. Of 9 histologically examined tumors, 5 were graded as benign and 4 as atypical meningiomas, with Ki-67 proliferative index 3.2 +/- 3.6 and 10 +/- 6, respectively. The ratio between positive and negative meningiomas regarding immunostaining for progesterone and estrogen receptors was eight-to-one and six-to-three, respectively. Cumulative actuarial risk of secondary meningioma in a cohort of 445 children 16 years or younger treated with high-dose cranial irradiation between 1968 and 1990 in Slovenia at 10, 20, and 25 years was 0.53%, 1.2%, and 8.18%, respectively. Out of 126 cases of radiation-induced meningiomas reported, 57% were females and 43% were males, with mean age at presentation 33 +/- 17.3 years. The majority (68%) of patients was irradiated during childhood. The latency period was significantly shorter in those who aged 5 years or less at the time of cranial irradiation (p = 0.04), and in those with atypical/anaplastic tumor (p = 0.01). Correlation between radiation dose and latency period could not be found. CONCLUSION Secondary meningiomas following high-dose cranial irradiation are characterized by younger age at presentation, by higher male-to-female ratio and by biologically more aggressive variants compared to primary spontaneous meningiomas. Latency period correlated with the age at the time of cranial irradiation and with tumor grade but not with irradiation dose. Ki-67 immunoreactivity correlated with histological grade. The progesterone and estrogen receptor immunoreactivity was high. The risk for development of secondary meningioma after high-dose cranial irradiation was increasing with the time of follow-up.
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Affiliation(s)
- P Strojan
- Department of Radiotherapy, Institute of Oncology, Ljubljana,
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Strojan P, Popović M, Jereb B. Secondary intracranial meningiomas after high-dose cranial irradiation: report of five cases and review of the literature. Int J Radiat Oncol Biol Phys 2000. [DOI: 10.1016/s0360-3016%2800%2900609-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Shoshan Y, Chernova O, Juen SS, Somerville RP, Israel Z, Barnett GH, Cowell JK. Radiation-induced meningioma: a distinct molecular genetic pattern? J Neuropathol Exp Neurol 2000; 59:614-20. [PMID: 10901233 DOI: 10.1093/jnen/59.7.614] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Radiation-induced meningiomas arise after low-dose irradiation treatment of certain medical conditions and are recognized as clinically separate from sporadic meningioma. These tumors are often aggressive or malignant, they are likely to be multiple, and they have a high recurrence rate following treatment compared with sporadic meningiomas. To understand the molecular mechanism by which radiation-induced meningioma (RIM) arise, we compared genetic changes in 7 RIM and 8 sporadic meningioma (SM) samples. The presence of mutations in the 17 exons of the neurofibromatosis type 2 (NF2) gene, which has been shown to be inactivated in sporadic meningiomas, was analyzed in RIM and SM using single-strand conformation polymorphism (SSCP) and DNA sequencing. In contrast to SM, which showed NF2 mutations in 50% of specimens, no mutations were found in RIM. In addition, Western blot analysis of schwannomin/merlin protein, the NF2 gene product, demonstrated protein levels comparable to normal brain in 4/4 RIM tumor samples analyzed. Loss of heterozygosity (LOH) of genomic regions, which were reported for SM, was also analyzed in all cases of RIM using 22 polymorphic DNA markers. Allele losses were found on chromosomes 1p (4/7), 9p (2/7), 19q (2/7), 22q (2/7), and 18q (1/7). From these observations we conclude that unlike sporadic meningiomas, NF2 gene inactivation and chromosome 22q deletions are far less frequent in RIM, and their role in meningioma development following low dose irradiation is less significant. Other chromosomal lesions, especially loss of 1p, possibly induced by irradiation, may be more important in the development of these tumors.
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Affiliation(s)
- Y Shoshan
- Center for Molecular Genetics, Department of Neurosurgery, The Cleveland Clinical Foundation, Ohio 44195, USA
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Chauveinc L, Dutrillaux AM, Validire P, Padoy E, Sabatier L, Couturier J, Dutrillaux B. Cytogenetic study of eight new cases of radiation-induced solid tumors. CANCER GENETICS AND CYTOGENETICS 1999; 114:1-8. [PMID: 10526528 DOI: 10.1016/s0165-4608(99)00038-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Radiation-induced tumors were selected according to the criteria defined by Cahan (1948) for sarcomas. Cell cultures and/or xenografts in nude mice were performed with biopsies obtained from second primary tumors. Karyotypes of eight tumors were established after R-banding. After comparison with literature data on 15 other cases, two distinct cytogenetic patterns could be distinguished. One was characterized by polyclonal karyotypes, of which a large proportion were simple and carriers of balanced translocations. Another one was characterized by monoclonal chromosome alterations observed in highly aneuploid and complex karyotypes, in which many deletions were observed. These two different patterns could be related to the modality of metaphase harvesting. Polyclonal karyotypes were preferentially observed after long-term cultures, and monoclonal karyotypes after short-term cultures or xenografts. The following scheme of radiation oncogenesis is proposed: a) induction of recessive gene mutations including that of tumor suppressor genes; b) accumulation of genomic alterations in the irradiated tissue with aging, including deletions or mutations of normal alleles from mutated tumor suppressor genes; and c) loss of tumor suppressor gene function and initiation of a multistage tumor development and progression. Polyclonal abnormalities are assumed to exist in noncancerous cells which acquired radiation-induced chromosome aberrations.
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Affiliation(s)
- L Chauveinc
- Service de Radiothérapie A, CNRS-Institut Curie LRC No. 4 CEA, Paris, France
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