Document Type : Original Article(s)

Authors

1 Department of Nursing, College of Medicine and Health Sciences, Afe Babalola University, Ado-Ekiti, Nigeria

2 Department of Community Medicine, College of Medicine and Health Sciences, Afe Babalola University, Ado-Ekiti, Nigeria

3 Department of E.N.T., Federal Teaching Hospital, Ido-Ekiti, Nigeria

Abstract

Background: Breast cancer is a major global health problem in women from both developing and developed countries. As the leading cause of death among women, breast cancer has contributed 19.5% to the mortality rate among women in Nigeria. This study investigated the trend of breast cancer among women who attended Federal Teaching Hospital, Ido-Ekiti, Nigeria.
Methods: This retrospective study examined the trend of breast cancer over a period of eight years and determined the most affected age group. Participants consisted of patients registered in the cancer registry who had histologically confirmed breast cancer. Data of 362 patients were examined between March and April 2016. Data were analyzed and presented using descriptive (frequency, charts, and percentages) and inferential statistics (Fisher’s exact) for hypothesis testing.
Results: Findings of this study revealed that the mean age of the participants was 45.04±16.94 years and all patients involved were females. The age group 20-39 years was most affected by breast cancer with a proportion of 41.7%. This study revealed a relationship between breast cancer classification and age of patients (P=0.011). Almost all (94.3%) cases seen within this time period were malignant.
Conclusion: Healthcare professionals should place more emphasis on prevention of breast cancer across all age groups, especially young adults. These young adults constitute the larger percentage of the adult population. An increase in mortality rate in this age group will reduce the labor force and affect the nation’s economy.

1.             WHO. Global cancer rates could increase by 50% to 15 million by 2020 [Internet]. [cited 2016 May 13] Available from: http://www.who.int/mediacentre/news/releases/2003/pr27/en/
2.             Ferlay J, Soerjomataram I, Dikshit R, Eser S, Mathers C, Rebelo M, et al . Cancer incidence and mortality worldwide: sources, methods and major patterns in GLOBOCAN 2012. Int J Cancer. 2015;136(5):E359-86.
3.             Jedy-Agba E, Curado MP, Ogunbiyi O, Oga E, Fabowale T, Igbinoba F, et al. Cancer incidence in Nigeria: a report from population-based cancer registries. Cancer Epidemiol. 2012;36(5):e271-8.
4.             Mukherjee, M. Development and characterization of mouse models of human breast cancer. [Doctoral Dissertation]. The University of North Carolina at Chapel Hill; 2008. Available from: Carolina Digital Repository, Malini Mukherjee - Thesis 7-18-2008.
5.             Ferlay, J; Bray, F; Parkin, DM; Pisani, P. GLOBOCAN 2000: Cancer Incidence and Mortality Worldwide (IARC Cancer Bases No. 5). Lyon:  IARC Press; 2001.
6.             Bray F, McCarron P, Parkin DM. The changing global patterns of female breast cancer incidence and mortality. Breast Cancer Res. 2004;6(6):229-39.
7.             Chintamani. The paradigm shifts in the management of breast cancer-have we finally arrived? Indian J Surg. 2013;75(6):419-23.
8.             Smeltzer, SC; Bare, BG; Hinkle, JL. Brunner & Suddarth’s textbook of medical-surgical nursing. Philadelphia: Lippincott Williams &Wilkins; 2010.
9.             Komen SG. Breast cancer statistic [Internet]. Available from: https://ww5.komen.org/BreastCancer/Statistics.html  (Accessed date: May13, 2016).
10.         Vanguard News. One in every 25 Nigerian women dies of cancer – Expert [Internet]. 2013 [cited 2016 April 22]. Available from: www.vanguardngr.com/2013/11/one-every-25-nigerian-women-dies-cancer-expert/
11.         Shulman LN, Willett W, Sievers A, Knaul FM. Breast cancer in developing countries: opportunities for improved survival. J Oncol. 2010;2010:595167.
12.         National Cancer Registry. Breast cancer incidence, mortality, treatment and survival in Ireland: 1994‐2009. Cork: National Cancer Registry; 2012, p. 5.
13.         Singapore Cancer Registry. Interim Annual Report Trends in Cancer Incidence in Singapore 2010-2014. Singapore: Singapore National Registry of Disease Office (NRDO); 2015, p. 56.
14.         Cancer Registry of Norway. Cancer in Norway 2012 - Cancer incidence, mortality, survival and prevalence in Norway. Oslo: Cancer Registry of Norway; 2014.
15.         Pukkala E, Weiderpass E. Time trends in socio-economic differences in incidence rates of cancers of the breast and female genital organs (Finland, 1971-1995). Int J Cancer. 1999;81(1):56-61.
16.         Morris, CR; Epstein, J; Nasserem K; Hofer, BM; Rico, J; Bates, JH, et al. Trends in Cancer Incidence, Mortality, Risk Factors, and Health Behaviours in California. Sacramento: California Department of Public Health, Cancer Surveillance Section; 2010, p.17.
17.         Goodman MT, Cologne JB, Moriwaki H, Vaeth M, Mabuchi K. Risk factors for primary breast cancer in Japan: 8-year follow-up of atomic bomb survivors. Prev Med. 1997;26(1):144-53.
18.         Sanderson M, Williams MA, Daling JR, Holt VL, Malone KE, Self SG, et al. Maternal factors and breast cancer risk among young women. Paediatr Perinat Epidemiol. 1998;12(4):397-407.
19.         Kelsey JL, Gammon MD, John EM. Reproductive factors and breast cancer. Epidemiol Rev. 1993;15(1):36-47.
20.         Renehan AG, Tyson M, Egger M, Heller RF, Zwahlen M. Body-mass index and incidence of cancer: a systematic review and meta-analysis of prospective observational studies. Lancet. 2008;371(9612):569-78.
21.         Collaborative Group on Hormonal Factors in Breast Cancer. Breast cancer and hormone replacement therapy: collaborative reanalysis of data from 51 epidemiological studies of 52,705 women with breast cancer and 108,411 women without breast cancer. Collaborative Group on Hormonal Factors in Breast Cancer. Lancet. 1997;350(9084):1047-59, Erratum in: Lancet. 1997, 350:1484.
22.         Moradi T, Adami HO, Ekbom A, Wedrén S, Terry P, Floderus B, et al. Physical activity and risk for breast cancer a prospective cohort study among Swedish twins. Int J Cancer. 2002;100(1):76-81.
23.         Moradi T, Nyrén O, Zack M, Magnusson C, Persson I, Adami HO. Breast cancer risk and lifetime leisure-time and occupational physical activity (Sweden). Cancer Causes Control. 2000;11(6):523-31.
24.         Ferlay J, Shin HR, Bray F, Forman D, Mathers CD, Parkin D. GLOBOCAN 2008, Cancer Incidence and Mortality Worldwide: IARC Cancer Base No.10 [Internet]. Lyon, France: International Agency for Research on Cancer. 2010; Accessed from: http://globocan.iarc.fr (Accessed date: Apr 25, 2016).
[25].         Gaudette LA, Silberberger C, Altmayer CA, Gao RN. Trends in breast cancer incidence and mortality.  [Article in English, French] Health Rep. 1996;8(2):29-37(Eng); 31-40(Fre).
[26].         Saika K, Sobue T. Epidemiology of breast cancer in Japan and the US. JMAJ. 2009; 52(1): 39-44.
27.         Hirko KA, Soliman AS, Hablas A, Seifeldin IA, Ramadan M, Banerjee M, et al. Trends in Breast Cancer Incidence Rates by Age and Stage at Diagnosis in Gharbiah, Egypt, over 10 Years (1999-2008). J Cancer Epidemiol. 2013;2013:916394.
28.         WHO. World Health Statistics 2009 [Internet]. [cited 2016 April 22] Available from: http://www.who.int/entity/whosis/whostat/EN_WHS09_Full.pdf?ua=1
29.         Beiki O, Hall P, Ekbom A, Moradi T. Breast cancer incidence and case fatality among 4.7 million women in relation to social and ethnic background: a population-based cohort study. Breast Cancer Res. 2012;14(1):R5.
30.         American Cancer Society. Global Cancer Facts & Figures. Atlanta: American Cancer Society; 2011.p.1-52.