Zhu Zhenxiang1, Cheng Tonghua1, Liu Shusong1, Shen Ruixue1, Su Lei1, Zhu Yunchao2
1Department of Gastroenterology, West Anhui Health Vocational College, Liuan 237005, China; 2Department of Pathology, West Anhui Health Vocational College, Liuan 237005, China
Abstract:Objective To investigate the risk factors of colorectal adenomatous polyps.Methods A retrospective case-control study was performed on 780 patients with colorectal polyps who underwent colonoscopic resection from January 2018 to December 2019 at the Department of Gastroenterology of the Affiliated Hospital of West Anhui Health Vocational College. The patients comprised 492 males (63.1%) and 288 females (36.9%) aged 9-93 (56.86±12.65) years old. According to the pathological diagnosis of polyps, the patients were divided into adenomatous polyps group (n=540) and non-adenomatous polyps group (n=240). First, the clinical and endoscopic characteristics(age, sex, abdominal clinical manifestations, number, size and location of colorectal polyps, pedicle and lobulation of polyps and intraepithelial neoplasia)of the two groups were compared. Then, the indicators with statistical differences were included in multivariate logistic regression analysis.Results The average age, incidence of hematochezia, and incidence of stomachache of patients with adenomatous polyps were higher than those of patients with non-adenomatous polyps (all P values<0.05). In addition, patients with adenomatous polyps had polyp diameter ≥1 cm, ≥3 polyps, obvious polyp pedicle, lobulation and canceration, and significantly higher change rates to low- and high-level intraepithelial neoplasia than patients with non-adenomatous polyps (all P values<0.05). Logistic regression analysis showed that age ≥70 years old (odds ratio [OR]=1.772, 95% confidence interval(CI) 1.133-2.770, P<0.05), hematochezia (OR=1.290, 95% CI 1.015-1.637, P<0.05), stomachache (OR=1.732, 95% CI 1.207-2.483, P<0.05), ≥3 polyps (OR=0.390, 95% CI 0.202-0.753, P<0.05), polyp diameter ≥ 1 cm (OR=0.604, 95% CI 0.383-0.952, P<0.05), obvious polyp pedicle (OR=2.779, 95% CI 1.511-5.112, P<0.05), and the incidence of canceration and low- and high-level intraepithelial neoplasia were risk factors of colorectal polyps (OR=0.599, 95% CI 0.373-0.960, P<0.05).Conclusions Adenomatous polyps are prone to develop into intraepithelial neoplasia and cancer. Patients with old age (age ≥ 70 years old), hematochezia, stomachache, ≥3 polyps, polyp diameter ≥ l cm, and obvious polyp pedicle can easily develop colorectal adenoma.
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