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Meningiomas occur more commonly in females. The coincidence between meningioma and breast cancer and case reports of tumor growth during pregnancy support a hormonal hypothesis. A case control study was conducted to investigate this. Female subjects treated between 1987 and 1992 were identified from 3 hospitals in the Chicago area. Female spouses of male back pain patients were recruited as controls. A self-administered mail questionnaire focused on exogenous, endogenous and other hormonal factors, personal and family medical history as well as radiation exposures. Odds ratios and 95% confidence intervals were estimated using crude, stratified and multivariable logistic models including 219 cases and 260 controls. Participation rates were 86% among cases and 75% among controls. An increased odds ratio (OR) was observed comparing African Americans to Caucasians [OR 5 2.4, 95% confidence interval (CI) 5 1.0-6.1]. A protective effect was observed for pregnancy, which increased with number and age at first pregnancy. The odds ratio for 3 or more pregnancies compared to none was 0.3 (95% CI 5 0.2-0.6). Age at menarche or total period of hormonal activity was not protective. Ever smokers showed a decreased odds ratio for meningioma (OR 5 0.6, 95% CI 5 0.4-0.9). The increased odds ratios with African Americans was retained in post-menopausal women, while the protective odds ratios for pregnancy, smoking and oral contraceptives (OCs) became stronger in pre-menopausal women. The pattern by duration and timing of use does not suggest an etiologic role for OCs or hormone replacement therapy. These data add to the evidence that factors known to influence endogenous hormones (pregnancy and indirectly smoking) may have protective effects for meningiomas primarily in premenopausal women. ' 2006 Wiley-Liss, Inc.Key words: case-control; meningioma; hormonal; reproductive The hypothesis of a hormonal influence on the occurrence of meningiomas was initially put forth because of the female preponderance in rates, the coincidence between meningioma and breast cancer 1 and case reports of tumor growth during pregnancy. 2 These indirect observations, stimulated studies of sex steroid receptors and a number of receptors and growth factors have been identified in tumor tissue. 3 Progesterone receptors predominate, although estrogen receptors may be present. 4 Although the role of these biologic markers in tumor development has not been established, it appears that the evidence for a role in tumor progression is stronger for progesterone receptors than for estrogen receptors. 5-7 A progesterone antagonist, mifepristone (RU-486), has been used therapeutically in an attempt to slow the growth of unresectable meningiomas, 8 but it has slowed the proliferation of meningioma tumor cells in vitro. 9 The role of hormone replacement therapy (HRT) in symptomatic postmenopausal women with previously treated disease or dormant tumors remains controversial. 6 A few small epidemiological studies suggested a potential role for both endogenous and exo...
Meningiomas occur more commonly in females. The coincidence between meningioma and breast cancer and case reports of tumor growth during pregnancy support a hormonal hypothesis. A case control study was conducted to investigate this. Female subjects treated between 1987 and 1992 were identified from 3 hospitals in the Chicago area. Female spouses of male back pain patients were recruited as controls. A self-administered mail questionnaire focused on exogenous, endogenous and other hormonal factors, personal and family medical history as well as radiation exposures. Odds ratios and 95% confidence intervals were estimated using crude, stratified and multivariable logistic models including 219 cases and 260 controls. Participation rates were 86% among cases and 75% among controls. An increased odds ratio (OR) was observed comparing African Americans to Caucasians [OR 5 2.4, 95% confidence interval (CI) 5 1.0-6.1]. A protective effect was observed for pregnancy, which increased with number and age at first pregnancy. The odds ratio for 3 or more pregnancies compared to none was 0.3 (95% CI 5 0.2-0.6). Age at menarche or total period of hormonal activity was not protective. Ever smokers showed a decreased odds ratio for meningioma (OR 5 0.6, 95% CI 5 0.4-0.9). The increased odds ratios with African Americans was retained in post-menopausal women, while the protective odds ratios for pregnancy, smoking and oral contraceptives (OCs) became stronger in pre-menopausal women. The pattern by duration and timing of use does not suggest an etiologic role for OCs or hormone replacement therapy. These data add to the evidence that factors known to influence endogenous hormones (pregnancy and indirectly smoking) may have protective effects for meningiomas primarily in premenopausal women. ' 2006 Wiley-Liss, Inc.Key words: case-control; meningioma; hormonal; reproductive The hypothesis of a hormonal influence on the occurrence of meningiomas was initially put forth because of the female preponderance in rates, the coincidence between meningioma and breast cancer 1 and case reports of tumor growth during pregnancy. 2 These indirect observations, stimulated studies of sex steroid receptors and a number of receptors and growth factors have been identified in tumor tissue. 3 Progesterone receptors predominate, although estrogen receptors may be present. 4 Although the role of these biologic markers in tumor development has not been established, it appears that the evidence for a role in tumor progression is stronger for progesterone receptors than for estrogen receptors. 5-7 A progesterone antagonist, mifepristone (RU-486), has been used therapeutically in an attempt to slow the growth of unresectable meningiomas, 8 but it has slowed the proliferation of meningioma tumor cells in vitro. 9 The role of hormone replacement therapy (HRT) in symptomatic postmenopausal women with previously treated disease or dormant tumors remains controversial. 6 A few small epidemiological studies suggested a potential role for both endogenous and exo...
BackgroundMeningioma incidence was reported to have risen substantially in the United States during the first decade of the 21st century. There are few reports about subsequent incidence trends. This study provides updated data to investigate trends in meningioma incidence by demographic and tumor characteristics at diagnosis in the United states from 2004 to 2015.MethodsTrends in meningioma incidence were analyzed using data from the Surveillance, Epidemiology, and End Results‐18 (SEER‐18) registry database of the National Cancer Institute. The joinpoint program was used to calculate annual percent change (APC) in incidence rates.ResultsThe overall incidence of meningioma increased by 4.6% (95% CI, 3.4‐5.9) annually in 2004‐2009, but remained stable from 2009 to 2015 (APC, 0; 95% CI, −0.8 to 0.8). Females (10.66 per 100 000 person‐years) and blacks (9.52 per 100 000 person‐years) had significant predominance in meningioma incidence. Incidence in many subgroups increased significantly up to 2009 and then remained stable until 2015. However, meningioma incidence in young and middle‐aged people increased significantly throughout the entire time period from 2004 to 2015 (APC: 3.6% for <20‐year‐olds; 2.5% for 20‐39‐year‐olds; 1.8% for 40‐59‐year‐olds). The incidence of WHO II meningioma increased during 2011‐2015 (APC = 5.4%), while the incidence of WHO III meningioma decreased during 2004‐2015 (APC = −5.6%).ConclusionIn this study, the incidence of meningioma was found to be stable in recent years. Possible reasons for this finding include changes in population characteristics, the widespread use of diagnostic techniques, and changes in tumor classification and risk factors in the US population.
The decision to commence or continue use of hormone replacement therapy or oral contraceptives in women presumed or known to be diagnosed with intracranial meningioma is a common clinical question in neurosurgery. A review of the English-language literature was undertaken to examine the association between the use of exogenous hormones and meningioma risk. Seven publications were identified, 6 of which met criteria for inclusion. No randomized clinical trial data were available, hence, results were collected from 2 population-based case-control studies, 2 hospital-based case-control studies, 1 nested case-control study drawn from a large national cohort, and 1 retrospective cohort study. At present, there is no statistical evidence of an increased risk of meningioma among users of oral contraceptives. Although not definitive, available data suggest an association between the use of hormone replacement therapy and increased meningioma risk. Further evaluation of exogenous hormone use in women with meningioma is needed with particular attention to stratification by hormone (ie, estrogen and/or progesterone) composition, duration of and age at use as well as tumor receptor subtype.
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