Factors Associated with Colorectal Cancer Diagnosis among Patients with Digestive Malignancies at the National Cancer Control Center of Niamey, Niger (2018–2023)
Abstract
Introduction: Colorectal cancer (CRC) is a major public health concern, with a rising incidence in low- and middle-income countries, particularly in sub-Saharan Africa. In Niger, data on factors associated with CRC are limited. This study aimed to identify sociodemographic, socioeconomic, clinical, and behavioral factors associated with the diagnosis of colorectal cancer among patients with digestive cancers.
Methods: This retrospective analytical study was conducted at the National Cancer Control Center (CNLC) of Niamey, including patients with histologically confirmed digestive cancers between January 1, 2018, and December 31, 2023. Associations between CRC diagnosis and independent variables were assessed using bivariate analyses (χ² or Fisher’s exact test), followed by multivariate logistic regression for variables with p < 0.20. Adjusted odds ratios (ORs) with 95 % confidence intervals (CI) were calculated.
Results: Among 424 digestive cancer cases, 231 (54.5 %) were colorectal cancers. After excluding incomplete records, 222 patients were analyzed. The mean age was 48.6 ± 15.4 years, with a male predominance (62.2 %). In multivariate analysis, no income was significantly associated with CRC diagnosis (OR = 4.85; 95 % CI: 1.40–16.00; p = 0.014). A consultation delay of two years or more was also significantly associated with CRC diagnosis (OR = 4.05; 95 % CI: 0.90–18.00; p = 0.034). Behavioral factors (tobacco, alcohol, obesity) and family history were not significantly associated with CRC.
Conclusion: This study highlights that low socioeconomic status and delayed consultation are strongly linked to the hospital diagnosis of colorectal cancer in Niger. Strengthening early detection, community awareness, and financial access to care is essential to improving patient management and prognosis.
Downloads
References
2. American Cancer Society. (2014). Cancer facts and figures. American Cancer Society. https://www.cancer.org/research/cancer-facts-statistics/all-cancer-facts-figures/2025-cancer-facts-figures.html.
3. Bray, F., Ren, J. S., Masuyer, E., & Ferlay, J. (2013). Estimates of global cancer prevalence for 27 sites in the adult population in 2008. International Journal of Cancer, 132(5), 1133–1145. https://doi.org/10.1002/ijc.27711.
4. Sung, H., Ferlay, J., Siegel, R. L., Laversanne, M., Soerjomataram, I., Jemal, A., & Bray, F. (2021). Global cancer statistics 2020: GLOBOCAN estimates of incidence and mortality worldwide for 36 cancers in 185 countries. CA: A Cancer Journal for Clinicians, 71(3), 209–249. https://doi.org/10.3322/caac.21660.
5. InfoCancer – ARCAGY – GINECO. (2024). Les différents types histologiques du cancer du côlon et du rectum. https://www.arcagy.org/infocancer/localisations/appareil-digestif/cancer-colon-et-rectum/formes-de-la-maladie/les-differents-types-histologiques.html/.
6. Niaouro, I., Hassan, N., Djimba, H., Soumaila, A., Dourahmane, A., Balkissa, M., & Alhassane, A. (2021). Colorectal cancers at the National Hospital of Niamey: Epidemiological, diagnostic, therapeutic and prognostic aspects (106 cases) [Doctoral thesis, University of Niamey].
7. Faivre, J., & Bouvier, A.-M. (2003). Frequency and prognosis of digestive cancers. FMC Gastroenterology. https://www.fmcgastro.org/wp-content/uploads/file/pdf/169.pdf.
8. Kassab, A., Landolsi, S., Miled, A., Ben Ahmed, S., & Gharbi, O. (2013). Is there a relationship between dietary habits in Tunisia and colorectal cancer? Immunologie et Biologie Spécialisée, 28(5–6), 327–333. https://doi.org/10.1016/j.immbio.2013.05.003.
9. Ouédraogo, S., Tapsoba, T. W., Bere, B., Ouangre, E., & Zida, M. (2019). Colorectal cancer in young adults in sub-Saharan Africa. Pan African Medical Journal. https://pubmed.ncbi.nlm.nih.gov/31615647/.
10. Kpossou, A. R., Vignon, R. K., Hadjete, J., Sokpon, C. N. M., Gnangnon, F. H. R., Dossou, S., Kouanou, A. A., Gbessi, D. G., & Sehonou, J. (2025). Colorectal cancers in two hospitals in Cotonou: Epidemiological, diagnostic, therapeutic and prognostic aspects. Mali Médical, 40(3), 1–8. https://pmc.ncbi.nlm.nih.gov/articles/PMC12623583/.
11. Bagnaka Eloumou, S. A. F., Bekolo Nga, W. T., Kenfack, G. U., Touko, L., Malongue, A., Tzeuton, C., & Noah, D. (2020). Prognostic factors of colorectal cancer in Cameroon. Health Sciences and Disease. https://www.hsdfmsb.org/index.php/hsd/article/view/1826.
12. Country Economy. (2023). Niger – Population pyramid. https://fr.countryeconomy.com/demographie/structure-population/niger.
13. Irabor, D. O. (2017). Emergence of colorectal cancers in West Africa: Accepting the inevitable. Nigerian Medical Journal, 58(3), 87–91. https://pmc.ncbi.nlm.nih.gov/articles/PMC6009139/.
14. Odo, B. A., Kouassi, K. K. Y., Issiaka, H., Nzamba, B. P. L., Toure, Y. L., Souge, O. P. M., & Toure, M. (2024). Colorectal carcinoma in Côte d’Ivoire: Comparative study according to age. Médecine d’Afrique Noire. https://www.santetropicale.com/sites_pays/resume_oa.asp?id_article=3719&revue=man&rep=rci.
15. Imad, F. E., Drissi, H., Radallah, D., Tawfiq, N., Benider, A., Bendahhou, K., et al. (2016). Nutritional risk factors for colorectal cancer in Morocco: A case–control study. Revue d’Épidémiologie et de Santé Publique, 64, S150. https://panafrican-med-journal.com/content/article/35/59/full/.
16. Benbekhti Abdrebbi, S. (2022). Five-year survival of colorectal cancers in Tlemcen Wilaya. https://ajhs.atrss.dz/ressources/fichiers_produits/fichier_produit_96.pdf.
17. Dembele, B. T., Traore, D., Saye, J., & Bengaly, B. (2024). Colorectal cancers: Clinical and therapeutic aspects in Mali. https://www.bibliosante.ml/bitstream/handle/123456789/13725/Memoire%20D.E.S.Dr%20Youssouf%20DEMBELE.pdf?sequence=1&isAllowed=y.
18. Alatise, O. I., Fischer, S. E., Ayandipo, O. A., Omisore, A. G., Olatoke, S. A., & Kingham, T. P. (2018). Health-seeking behavior and barriers to care among patients with rectal bleeding in Nigeria. Journal of Global Oncology. https://pubmed.ncbi.nlm.nih.gov/29244996/.
19. Doubeni, C. A., Laiyemo, A. O., Major, J. M., Schootman, M., Lian, M., Park, Y., & Sinha, R. (2012). Socioeconomic status and risk of colorectal cancer. Cancer Epidemiology, Biomarkers & Prevention, 21(10), 1722–1730. https://pubmed.ncbi.nlm.nih.gov/22898918/.
20. Leng, J., Ntekim, A. I., Ibrahee, A., Anakwenze, C. P., Golden, D. W., & Olopade, O. I. (2020). Infrastructure challenges leading to delays in curative radiotherapy in Nigeria. Journal of Global Oncology. https://ascopubs.org/doi/full/10.1200/JGO.19.00286.
21. Acray-Zengbé, P., Akani, B. C., Coulibaly, J., Memel Esme, M., Dagnan N’Cho, S., & Die-Kakou, H. (2018). Financial accessibility of anticancer treatments in Abidjan. Médecine et Santé Tropic ales. https://www.em-consulte.com/article/1212618/accessibilite-financiere-aux-traitements-anticance.
22. Fayehun, O., Apenteng, P., Umar, U. A., Adebayo, K. O., Owoaje, E., Sartori, J., & Richard, R. (2025). Cancer diagnosis delays in southern and northern Nigeria: Duration and causes. BMC Health Services Research. https://bmchealthservres.biomedcentral.com/articles/10.1186/s12913-025-12707-8.
23. Tazinkeng, N. N., Pearlstein, E. F., Manda-Mapalo, M., Adekunle, A. D., Monteiro, J. F. G., Sawyer, K., & Asombang, A. W. (2024). Incidence and risk factors of colorectal cancer in Africa. Cancers. https://pmc.ncbi.nlm.nih.gov/articles/PMC11382465/.
24. Moghaddam, A. A., Woodward, M., & Huxley, R. (2007). Obesity and risk of colorectal cancer: A meta-analysis. Obesity Reviews, 8(1), 41–49. https://pubmed.ncbi.nlm.nih.gov/18086756/.
25. Ungvari, Z., Fekete, M., Varga, P., Lehoczki, A., Fekete, J. T., Ungvari, A., & Győrffy, B. (2024). Obesity and colorectal cancer: A meta-analysis of 66 studies. Cancers. https://pubmed.ncbi.nlm.nih.gov/39379738/.
26. Negrichi, S., & Taleb, S. (2021). Hereditary, environmental, and dietary risk factors for colorectal cancer: a case-control study in eastern Algeria. In Public Health perspectives on cancer in Africa. Springer. https://pubmed.ncbi.nlm.nih.gov/32767215/.
Copyright (c) 2026 Fatima Mohamed, Damien Georgia Barikissou, Alkassoum Ibrahim Salifou, Amadou Soumaila, Badirou Aguemon

This work is licensed under a Creative Commons Attribution 4.0 International License.


