Journal ArticleDOI
Neoplasms of the central nervous system in Norway
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The Norwegian Cancer Registry includes reports on 8,933 cases of primary central nervous system neoplasms diagnosed in the period 1955-1984 as discussed by the authors, and the main source of error was misinterpretation of data by cancer registry staff (67 out of 109 cases).Abstract:
The Norwegian Cancer registry includes reports on 8,933 cases of primary central nervous system neoplasms diagnosed in the period 1955-1984. Before submitting this data set to epidemiological analysis, errors were searched out and subsequently corrected, and a quality control was performed. First, seven categories of neoplasm records likely to be faulty were defined. In this way 109 cases (1.2% of the total) were identified for extensive study. Minor or major errors were found and corrected in 86 cases. The main source of error was misinterpretation of data by cancer registry staff (67 out of 109 cases). The second approach was to evaluate the quality of the corrected data set by a random draw of 300 cases. Errors concerning total incidence rates and rates for main groups of gliomas, meningiomas and neurilemmomas represented 0.3% of the total, and altogether 9.3% of errors of varying severity were revealed. The series is discussed with regard to prerequisites for serving as reliable data on CNS neoplasm epidemiology. The results indicate that the data from the Norwegian Cancer Registry is sufficiently valid for a thorough study of CNS neoplasms.read more
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Journal ArticleDOI
Data quality at the Cancer Registry of Norway: An overview of comparability, completeness, validity and timeliness
Inger Kristin Larsen,Milada Cvancarova Småstuen,Tom Børge Johannesen,Frøydis Langmark,Donald Maxwell Parkin,Freddie Bray,Bjørn Møller +6 more
TL;DR: The routines in place at the CRN yields comparable data that can be considered reasonably accurate, close-to-complete and timely, thereby justifying the policy of the reporting of annual incidence one year after the year of diagnosis.
Journal ArticleDOI
Epidemiology and etiology of intracranial meningiomas: A review
Melissa L. Bondy,B. L. Ligon +1 more
TL;DR: The most promising studies are those of cytogenetics, and future elucidation of factors associated with the loss of one copy of chromosome 22, another phenomenon that has been identified in meningiomas, may lead to screening tests and gene therapy.
Journal ArticleDOI
Epidemiology of intracranial meningioma
TL;DR: Ionizing radiation and head trauma have emerged as the most promising etiologic risk factors for meningioma and the role of dental radiographs has been suggested in some studies but not supported in others.
Journal ArticleDOI
Role of medical history in brain tumour development. Results from the international adult brain tumour study.
Brigitte Schlehofer,Maria Blettner,Susan Preston-Martin,Dorothea Niehoff,Jürgen Wahrendorf,Annie Arslan,Anders Ahlbom,Won Choi,Graham G. Giles,Geoffrey R. Howe,Julian Little,François Menegoz,Philip Ryan +12 more
TL;DR: The decreased risks for glioma in subjects reporting a history of allergic conditions or infectious diseases may indicate an influence of immunological factors on the development ofglioma.
Journal ArticleDOI
The trends in incidence of primary brain tumors in the population of rochester, minnesota
Kurupath Radhakrishnan,Bahram Mokri,Joseph E. Parisi,W. Michael O'Fallon,Jayasimha Sunku,Leonard T. Kurland +5 more
TL;DR: The data indicate that the reported increase in the incidence of primary brain tumors is an artifact of improvement in diagnostic technology and practice.
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Cancer Incidence in Five Continents
Freddie Bray,J. Ferlay,Mathieu Laversanne,David H. Brewster,C. Gombe Mbalawa,B. Kohler,Marion Piñeros,Eva Steliarova-Foucher,Rajaraman Swaminathan,Sebastien Antoni,Isabelle Soerjomataram,David Forman +11 more
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Journal ArticleDOI
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Journal ArticleDOI
Increased expression of the epidermal growth factor receptor gene in malignant gliomas is invariably associated with gene amplification.
Albert J. Wong,Sandra H. Bigner,Darell D. Bigner,Kenneth W. Kinzler,Stanley R. Hamilton,Bert Vogelstein +5 more
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Journal ArticleDOI
Increased 2-hydroxylation of estradiol as a possible mechanism for the anti-estrogenic effect of cigarette smoking.
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