Factors Influencing Polyp Detection Rates During Colonoscopies in the Moroccan Population

Aims This study aims to investigate the factors affecting polyp detection rates during colonoscopy in the Moroccan context. By understanding these factors, tailored interventions can be developed to optimize CRC screening efforts and reduce the burden of colorectal cancer in Morocco.

Methods This retrospective study covered a period from September 2022 to January 2024, A total of 220 colonoscopies conducted during the specified period were included in the study. Data were extracted from medical records and colonoscopy reports,Statistical calculations were performed using SPSS software version 26

Results A total of 220 participants were included in this study, of whom 68 (31%) had colorectal polyps, and the remaining 152 (69%) were classified as healthy controls.Significant differences were observed between the groups of participants with and without colorectal polyps. In terms of gender distribution, among the participants without polyps, 110 were men and 42 were women, while among those with polyps, 50 were men and 18 were women (p<0.001). Similarly, the mean age of participants without polyps was 45 years (standard deviation of 4 years), while those with polyps had a mean age of 51 years (standard deviation of 1.6 years)(p<0.001). Smoking was also significantly different between the groups: 31% of participants without polyps were smokers, compared to 20% of participants with polyps (p<0.001). Additionally, alcohol consumption was more frequent among participants without polyps (44%) compared to those with polyps (25%) (p<0.001). However, no significant association was observed concerning hypertension. 6% of patients had a personal medical history of polyps or colorectal cancer. The polyp detection rate in patients with a personal medical history was 32%, compared to 26% in those without similar histories. Statistical analysis revealed a significant correlation between personal medical history and polyp detection rate (p<0.05). There was a statistically significant relationship between the Boston score and the polyp detection rate. The average withdrawal time during colonoscopies was 6 minutes. Analysis revealed that longer withdrawal times were associated with higher polyp detection rates (p<0.05).Polyps were detected in 31% of the colonoscopies. The average size of the detected polyps was 7 mm. The most commonly observed morphology was sessile polyps in the left colon.

Conclusions In conclusion, this study reveals that family and medical history, as well as the quality of bowel preparation, are significant factors influencing polyp detection rates during colonoscopy in Morocco.Prolonged withdrawal times are also associated with higher detection rates. These findings underscore the importance of personalized screening strategies and adequate bowel preparation to improve the effectiveness of colonoscopy in the early detection of colorectal lesions, thereby contributing to the reduction of the colorectal cancer.

 

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Conflicts of interest

Authors do not have any conflict of interest to disclose.

Publication History

Article published online:
27 March 2025