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Current Oncology
Volume 26
Issue 4
10.3747/co.26.4625
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Article

Incidence and Mortality Trends and Geographic Patterns of Follicular Lymphoma in Canada

by
M. Le
1,*,
F.M. Ghazawi
2,
A. Alakel
3,
E. Netchiporouk
1,
E. Rahme
4,
A. Zubarev
1,
M. Powell
1,
L. Moreau
1,
O. Roshdy
1,
S.J. Glassman
2,
D. Sasseville
1,*,
G. Popradi
5 and
I.V. Litvinov
1,2,*
1
Division of Dermatology, McGill University, Montreal, QC, Canada
2
Division of Dermatology, University of Ottawa, Ottawa, ON, Canada
3
The Ottawa Hospital Research Institute, Ottawa, ON, Canada
4
Division of Clinical Epidemiology, McGill University, Montreal, QC, Canada
5
Division of Hematology, McGill University, Montreal, QC, Canada
*
Authors to whom correspondence should be addressed.
Curr. Oncol. 2019, 26(4), 473-481; https://doi.org/10.3747/co.26.4625
Submission received: 1 May 2019 / Revised: 3 June 2019 / Accepted: 7 July 2019 / Published: 1 August 2019

Abstract

Background: Follicular lymphoma (FL) is the most common indolent lymphoma and the 2nd most common non-Hodgkin lymphoma, accounting for 10%–20% of all lymphomas in the Western world. Epidemiologic and geographic trends of FL in Canada have not been investigated. Our study’s objective was to analyze incidence and mortality rates and the geographic distribution of FL patients in Canada for 1992–2010. Methods: Demographic and geographic patient data for FL cases were obtained using the Canadian Cancer Registry, the Registre québécois du cancer, and the Canadian Vital Statistics database. Incidence and mortality rates and 95% confidence intervals were calculated per year and per geographic area. Rates were plotted using linear regression models to assess trends over time. Overall data were mapped using Microsoft Excel mapping software (Redmond, WA, U.S.A.) to identify case clusters across Canada. Results: Approximately 22,625 patients were diagnosed with FL during 1992–2010. The age-standardized incidence rate of this malignancy in Canada was 38.3 cases per million individuals per year. Geographic analysis demonstrated that a number of Maritime provinces and Manitoba had the highest incidence rates, and that the provinces of Nova Scotia and Quebec had the highest mortality rates in the nation. Regional data demonstrated clustering of FL within cities or regions with high herbicide use, primary mining, and a strong manufacturing presence. Conclusions: Our study provides a comprehensive overview of the FL burden and its geographic distribution in Canada. Regional clustering of this disease in concentrated industrial zones strongly suggests that multiple environmental factors might play a crucial role in the development of this lymphoma.
Keywords: follicular lymphoma; incidence; mortality; geographic clustering; epidemiology; pollutants; herbicides; mining; clustering follicular lymphoma; incidence; mortality; geographic clustering; epidemiology; pollutants; herbicides; mining; clustering

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MDPI and ACS Style

Le, M.; Ghazawi, F.M.; Alakel, A.; Netchiporouk, E.; Rahme, E.; Zubarev, A.; Powell, M.; Moreau, L.; Roshdy, O.; Glassman, S.J.; et al. Incidence and Mortality Trends and Geographic Patterns of Follicular Lymphoma in Canada. Curr. Oncol. 2019, 26, 473-481. https://doi.org/10.3747/co.26.4625

AMA Style

Le M, Ghazawi FM, Alakel A, Netchiporouk E, Rahme E, Zubarev A, Powell M, Moreau L, Roshdy O, Glassman SJ, et al. Incidence and Mortality Trends and Geographic Patterns of Follicular Lymphoma in Canada. Current Oncology. 2019; 26(4):473-481. https://doi.org/10.3747/co.26.4625

Chicago/Turabian Style

Le, M., F.M. Ghazawi, A. Alakel, E. Netchiporouk, E. Rahme, A. Zubarev, M. Powell, L. Moreau, O. Roshdy, S.J. Glassman, and et al. 2019. "Incidence and Mortality Trends and Geographic Patterns of Follicular Lymphoma in Canada" Current Oncology 26, no. 4: 473-481. https://doi.org/10.3747/co.26.4625

APA Style

Le, M., Ghazawi, F. M., Alakel, A., Netchiporouk, E., Rahme, E., Zubarev, A., Powell, M., Moreau, L., Roshdy, O., Glassman, S. J., Sasseville, D., Popradi, G., & Litvinov, I. V. (2019). Incidence and Mortality Trends and Geographic Patterns of Follicular Lymphoma in Canada. Current Oncology, 26(4), 473-481. https://doi.org/10.3747/co.26.4625

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