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      Epidemiology of Malignant and Non-Malignant Primary Brain Tumors in Jordan

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          Abstract

          Background: There is lack of knowledge on the epidemiological characteristics of brain tumors in Middle Eastern countries. The objective of this study was to study the epidemiological features of primary brain tumors in Jordan. Methods: We conducted a prospective cohort study incorporating data from 16 hospitals in Jordan during a 1 year period (May 1, 2011-April 30, 2012). All primary brain tumors diagnosed in Jordan during the study period were identified. The following parameters were retrieved from patients' files: age, gender, histological type, and location. The demographic data of the country was obtained from the National Department of Statistics. Results: A total of 313 primary brain tumors were identified during the study period. The incidence of primary brain tumors in Jordan among the general population was 5.01 per 100,000 person-years (5.38 in females and 4.65 in males). The incidence in pediatric, adult, and elderly patients was 2.09, 7.29, and 14.38 per 100,000 person-years, respectively. The most common histological types were meningioma (26.2%), glioblastoma (18.9%), astrocytoma (14.1%), and pituitary adenoma (9.3%). Conclusions: The incidence of primary brain tumors in the Jordanian population is relatively low, in part due to the young age of the general population.

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          A population-based description of glioblastoma multiforme in Los Angeles County, 1974-1999.

          Indro Chakrabarti, Myles Cockburn, Wendy Cozen … (2005)
          There have been reports that the incidence rates of brain tumors have increased over the past few decades, but most have considered all brain tumors together. The authors analyzed the pattern of glioblastoma multiforme (GBM) occurrence in Los Angeles County, California to shed light on the incidence and descriptive epidemiology of this type of brain tumor. Data were obtained from the Los Angeles County Cancer Surveillance Program. Incidence rates were analyzed by gender, race, age at diagnosis, period of diagnosis (1974-1981, 1982-1988, or 1989-1999), and socioeconomic status (SES). In addition, data were stratified according to anatomic subsite. A multivariate model describing changes in rates by each of these variables was constructed. Age-specific incidence rates (ASIR) rose sharply after age 30 years. The peak ASIR was at age 70-74 years in males and at age 75-79 years in females. The age-adjusted incidence rate (AAIR) of GBM increased from 1974 to 1999 by an estimated 2.4% per year among males and 2.8% per year among females. Overall, males had a 60% increased risk of brain tumors compared with females. Males had a higher incidence of GBM compared with females at each anatomic subsite except the posterior fossa. The largest male:female ratio occurred in the occipital lobes. Non-Latino whites had the highest incidence rates (2.5 per 100,000) followed by Latino whites (1.8 per 100,000), and blacks (1.5 per 100,000). After 1989, compared with the period before magnetic resonance imaging (MRI) was available, there was an increase in GBM incidence rates among those with of higher SES that was most pronounced in females. The incidence of GBM was highest for frontal lobe tumors and for tumors that involved two or more lobes (overlapping tumors), followed by tumors in the temporal and parietal lobes. In the multivariate analysis, year of diagnosis, SES, gender, race (Latino but not black), site, and age at diagnosis all were important predictors of incidence rate. GBM incidence increased in Los Angeles County over the last 30 years and especially after 1989, suggesting that the introduction of MRI may have contributed to the increase. Individuals older than age 65 years experienced the greatest increase in incidence over time. Older age, male gender, higher SES, and non-Latino white race increased the risk of GBM. Previously unreported incidence rates for GBM among Latino whites were significantly lower than among non-Latino whites but were intermediate between non-Latino whites and blacks. Copyright 2005 American Cancer Society.
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            Epidemiology of primary brain and central nervous system tumors in Korea.

            Jean C. Lee, Heon Yoo, Seo Lee … (2010)
            The aim of this report is to provide accurate nationwide epidemiologic data on primary central nervous system (CNS) tumors in Korea. Despite its importance, there are no accurate statistics on primary CNS tumors in Korea. We analyzed primary CNS tumors diagnosed in 2005 from the nationwide registry. Data on primary CNS tumors diagnosed in 2005 were collected from the Korean Central Cancer Registry and the Korean Brain Tumor Society. Crude and age-standardized rates were calculated in terms of gender, age, and histological type. Tumors of uncertain histology were investigated individually at the corresponding hospitals and had their diagnoses confirmed. A total of 5,692 patients diagnosed with primary CNS tumors in 2005 were included in this study. CNS tumors occurred in females more often than in males (female to male, 1.43 : 1). The most common tumor was meningioma (31.2%). Glioblastoma accounted for 30.7% of all gliomas, and 19.3% of all malignant primary CNS tumors. In children under 19 years of age, both germ cell tumor and embryonal/primitive/medulloblastoma were the most common tumors. This article is the first nationwide primary CNS tumor epidemiology report in Korea. Data from this study should provide valuable information regarding the understanding of primary CNS tumors epidemiology in Korea.
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              Time trends in brain tumor incidence rates in Denmark, Finland, Norway, and Sweden, 1974-2003.

              Maria Feychting, Isabelle Deltour, Christoffer Johansen … (2009)
              In Denmark, Finland, Norway, and Sweden, the use of mobile phones increased sharply in the mid-1990s; thus, time trends in brain tumor incidence after 1998 may provide information about possible tumor risks associated with mobile phone use. We investigated time trends in the incidence of glioma and meningioma in Denmark, Finland, Norway, and Sweden from 1974 to 2003, using data from national cancer registries. We used joinpoint regression models to analyze the annual incidence rates of glioma and meningioma. During this period, 59,984 men and women aged 20-79 years were diagnosed with brain tumors in a population of 16 million adults. All statistical tests were two-sided. From 1974 to 2003, the incidence rate of glioma increased by 0.5% per year (95% confidence interval [CI] = 0.2% to 0.8%) among men and by 0.2% per year (95% CI = -0.1% to 0.5%) among women and that of meningioma increased by 0.8% per year (95% CI = 0.4% to 1.3%) among men, and after the early 1990s, by 3.8% per year (95% CI = 3.2% to 4.4%) among women. No change in incidence trends were observed from 1998 to 2003, the time when possible associations between mobile phone use and cancer risk would be informative about an induction period of 5-10 years.
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                Author and article information

                Journal
                Journal ID (publisher-id): NED
                Journal ID (nlm-ta): Neuroepidemiology
                Journal ID (doi): 10.1159/issn.0251-5350
                Title: Neuroepidemiology
                Publisher: S. Karger AG
                ISSN (Print): 0251-5350
                ISSN (Electronic): 1423-0208
                Publication date Subscription-year: 2015
                Publication date (Print): October 2015
                Publication date (Electronic): 29 August 2015
                Volume: 45
                Issue: 2
                Pages: 100-108
                Affiliations
                aFaculty of Medicine, University of Jordan, Departments of bNeurosurgery and c Pathology, Jordan University Hospital, dDepartment of Pathology, King Hussein Cancer Center, and eDepartment of Pathology, Royal Medical Service, Amman, Jordan; fFaculty of Dentistry, McGill University, Montreal, Que., Canada
                Author notes
                *Prof. Ahmad F. Tamimi, MD, PhD, Department of Neurosurgery, Jordan University Hospital, Queen Rania Street, Amman 11942 (Jordan), E-Mail aftamimi@hotmail.com
                Author information
                https://orcid.org/0000-0001-6392-150X
                Article
                Publisher ID: 438926 Other ID: Neuroepidemiology 2015;45:100-108
                DOI: 10.1159/000438926
                PubMed ID: 26314301
                SO-VID: a500b033-a5f5-48f8-9678-e86f67025436
                Copyright © © 2015 S. Karger AG, Basel
                License:

                Copyright: All rights reserved. No part of this publication may be translated into other languages, reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, microcopying, or by any information storage and retrieval system, without permission in writing from the publisher. Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in government regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug. Disclaimer: The statements, opinions and data contained in this publication are solely those of the individual authors and contributors and not of the publishers and the editor(s). The appearance of advertisements or/and product references in the publication is not a warranty, endorsement, or approval of the products or services advertised or of their effectiveness, quality or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements.

                History
                Date received : 07 May 2015
                Date accepted : 17 July 2015
                Page count
                Figures: 5, Tables: 4, References: 33, Pages: 9
                Categories
                Subject: Original Paper

                ScienceOpen disciplines: Geriatric medicine,Neurology,Cardiovascular Medicine,Neurosciences,Clinical Psychology & Psychiatry,Public health
                Keywords: Meningioma,Epidemiology,Primary brain tumor,Pituitary adenoma,Glioblastoma,Season,Jordan,Incidence rate,Middle East
                Data availability:
                ScienceOpen disciplines: Geriatric medicine, Neurology, Cardiovascular Medicine, Neurosciences, Clinical Psychology & Psychiatry, Public health
                Keywords: Meningioma, Epidemiology, Primary brain tumor, Pituitary adenoma, Glioblastoma, Season, Jordan, Incidence rate, Middle East

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