Introduction: Colonoscopy is the reference standard for colonic evaluation and the prevention of colorectal cancer. Its diagnostic performance and safety depend on adherence to validated quality indicators. Our objective was to assess colonoscopy quality criteria in two reference endoscopy centers in Dakar. Patients and Methods: This was a multicenter, retrospective, descriptive, and analytical study conducted between April 1, 2021, and July 31, 2022. All patients who underwent colonoscopy with an interpretable report were included. We collected sociodemographic data, indications for the examination, colon preparation methods and quality, operator level, examination tolerance, colonoscopy findings, histopathological data on lesions, and the endoscopic treatment performed. Data entry was performed using Excel software, and statistical analysis was conducted using STATA software. Results: All patients underwent a pre-colonoscopy consultation, and 75.9% of indications were deemed appropriate according to the 2012 ASGE criteria. All patients received bowel preparation with polyethylene glycol 4 L in split dosing. Adequate preparation, defined as a Boston score ≥ 6, was achieved in 94.4% of colonoscopies. The overall cecal intubation rate was 86.5% and reached 92.1% after excluding impassable tumoral strictures. The polyp detection rate was 18.3% in the overall population and 24.2% among patients aged 50 years and older. Polypectomy was performed in 44.4% of detected polyps, with a retrieval rate of 95%. Conclusion: Several major indicators of colonoscopy quality met international standards. However, improved documentation of quality indicators, histological data, and examination conditions remains necessary to optimize the overall quality of colonoscopy.
References
[1]
Knudsen, M.D., Wang, K., Wang, L., Polychronidis, G., Berstad, P., Hjartåker, A., et al. (2025) Colorectal Cancer Incidence and Mortality after Negative Colonoscopy Screening Results. JAMAOncology, 11, 46-54. https://doi.org/10.1001/jamaoncol.2024.5227
Kaminski, M., Thomas-Gibson, S., Bugajski, M., Bretthauer, M., Rees, C., Dekker, E., et al. (2017) Performance Measures for Lower Gastrointestinal Endoscopy: A European Society of Gastrointestinal Endoscopy (ESGE) Quality Improvement Initiative. Endoscopy, 49, 378-397. https://doi.org/10.1055/s-0043-103411
[4]
Early, D.S., Ben-Menachem, T., Decker, G.A., Evans, J.A., Fanelli, R.D., Fisher, D.A., et al. (2012) Appropriate Use of GI Endoscopy. GastrointestinalEndoscopy, 75, 1127-1131. https://doi.org/10.1016/j.gie.2012.01.011
[5]
Lapuelle, J., Bernardini, D., Robaszkiewicz, M. and Chaussade, S. (2019) Quality Criteria for Colonoscopy-Recommendations of the CNP-HGE and the SFED. Hépato-Gastro et Oncologie Digestive, 26, 15-28.
[6]
Delsa, H., Sokpon, M., Salihoun, M., Acharki, M., Serraj, I. and Kabbaj, N. (2022) Evaluation of the Quality of Bowel Preparation Using the BBPS: Experience from a Moroccan Department. PAMJ Clinical Medicine, 8, 1-18.
[7]
Assi, C., Lohouès-Kouacou, M.J., Allah-Kouadio, E., Njossu, C.J., Okon, A.J., Doffou, S., et al. (2012) Appropriateness of Colonoscopy in Cocody Teaching Hospital Center in 2010: A Prospective Study Using Criteria Established by the European Panel on the Appropriateness of Gastrointestinal Endoscopy (EPAGE). OpenJournalofGastroenterology, 2, 193-199. https://doi.org/10.4236/ojgas.2012.24039
[8]
Ugiagbe, R., Omuemu, C. and Imarhiagbe, F. (2016) Appropriateness of Indication and Diagnostic Yield of Colonoscopy in a Southern Nigerian Tertiary Hospital. BritishJournalofMedicineandMedicalResearch, 14, 1-8. https://doi.org/10.9734/bjmmr/2016/24675
[9]
Brenu, S.G., Agbedinu, K., Yorke, J., Dally, C.K., Adinku, M.O., Micah, E., et al. (2025) Enhancing Colonoscopy Services in Ghana: A Comprehensive Assessment of Referral Indications and Endoscopic Findings in a Leading Tertiary Care Hospital. JournalofWestAfricanCollegeofSurgeons, 16, 11-17. https://doi.org/10.4103/jwas.jwas_155_24
[10]
Gudissa, F.G., Alemu, B., Gebremedhin, S., Gudina, E.K. and Desalegn, H. (2021) Colonoscopy at a Tertiary Teaching Hospital in Ethiopia: A Five-Year Retrospective Review. PAMJClinicalMedicine, 5, Article 37. https://doi.org/10.11604/pamj-cm.2021.5.37.26398
[11]
Hassan, C., East, J., Radaelli, F., Spada, C., Benamouzig, R., Bisschops, R., et al. (2019) Bowel Preparation for Colonoscopy: European Society of Gastrointestinal Endoscopy (ESGE) Guideline—Update 2019. Endoscopy, 51, 775-794. https://doi.org/10.1055/a-0959-0505
[12]
Enestvedt, B.K., Fennerty, M.B. and Eisen, G.M. (2012) Randomized Clinical Trial: Bowel Preparation for Colonoscopy. A Meta-Analysis. Alimentary Pharmacology & Therapeutics, 35, 744-754.
[13]
Dramane, S., Al Vera, V.D.M., Ouattara, A. and Lah Bi, R. (2022) Quality Criteria for Colonoscopy in a Digestive Endoscopy Unit in Abidjan. Journal of Clinical Gastroenterology and Hepatology, 6, 4-8.
[14]
Spada, C., Koulaouzidis, A., Hassan, C., Amaro, P., Agrawal, A., Brink, L., et al. (2021) Colonoscopy Quality across Europe: A Report of the European Colonoscopy Quality Investigation (ECQI) Group. EndoscopyInternationalOpen, 9, E1456-E1462. https://doi.org/10.1055/a-1486-6729
[15]
Bernardini, D., Bulois, P., Barthet, M., Chaussade, S., Gronier, O., Lecomte, T., et al. (2017) “Une semaine de coloscopie en France”: Résultats 2017 de l’enquête annuelle de la Société française d’endoscopie digestive. Acta Endoscopica, 47, 242-251. https://doi.org/10.1007/s10190-017-0613-2
[16]
Assi, C., Koné, S., Ouattara, A., Soro, D., Allah-Kouadio, E. and Lohouès-Kouacou, M.J.A. (2017) La coloscopie totale en 2015 dans un hôpital universitaire à Abidjan: Conditions de réalisation et résultats. Journal Africain d’Hépato-Gastroentérologie, 11, 64-67. https://doi.org/10.1007/s12157-017-0702-4
[17]
Akere, A. and Akande, K. (2017) Cecal Intubation Rate during Colonoscopy at a Tertiary Hospital in South-West Nigeria: How Frequent and What Affects Completion Rate? NigerianJournalofClinicalPractice, 20, 303-306. https://doi.org/10.4103/1119-3077.187334
[18]
Onyekwere, C.A., Odiagah, J.N., Ogunleye, O.O., Chibututu, C. and Lesi, O.A. (2013) Colonoscopy Practice in Lagos, Nigeria: A Report of an Audit. DiagnosticandTherapeuticEndoscopy, 2013, Article ID: 798651. https://doi.org/10.1155/2013/798651
[19]
Ray-Offor, E., Ijah, R.F.O.A. and Egboh, S.C. (2022) Colonoscopy Practice and Polyp Detection in Nigeria: A Systematic Review. NigerianJournalofGastroenterologyandHepatology, 14, 11-23. https://doi.org/10.4103/njgh.njgh_8_22
[20]
Teshome, H., Redae, B. and Teklesilassie, H. (2020) Experience of Colonoscopy at a Tertiary Hospital, Addis Ababa, Ethiopia. Ethiopian Medical Journal, 58, 49-55.
[21]
Fall, M.P., Basséne, M.L., Diallo, S., Gueye, M.N., Cissé, C.A.B., Diop, M.M., et al. (2023) Indications and Results of Lower Gastrointestinal Endoscopy in a Regional Hospital Center in Senegal. OpenJournalofGastroenterology, 13, 43-48. https://doi.org/10.4236/ojgas.2023.131005
[22]
Kaltenbach, T., Anderson, J.C., Burke, C.A., Dominitz, J.A., Gupta, S., Lieberman, D., et al. (2020) Endoscopic Removal of Colorectal Lesions—Recommendations by the US Multi-Society Task Force on Colorectal Cancer. Gastroenterology, 158, 1095-1129. https://doi.org/10.1053/j.gastro.2019.12.018
[23]
Kruger, J., Katsidzira, L., Setshedi, M. and Thomson, S.R. (2020) Prevalence and Characteristics of Incidental Colorectal Polyps in Patients Undergoing Colonoscopy at a South African Tertiary Institution. SouthAfricanMedicalJournal, 110, 1191-1194. https://doi.org/10.7196/samj.2020.v110i12.14582
[24]
Ray-Offor, E. and Abdulkareem, F.B. (2019) Screening Colonoscopy in Port Harcourt, Nigeria. GastroenterologyInsights, 10, Article 7987. https://doi.org/10.4081/gi.2019.7987
