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| Morphological Differences of Colorectal Polyps Under NBI Endoscopy and Their Diagnostic Value in Polyp Characterization |
| CAI Ping, SONG Zhi, YANG Qian, et al |
| The First Hospital of Qiqihar, Heilongjiang Qiqihar 161000, China |
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Abstract Objective: To investigate the morphological differences of colorectal polyps under Narrow Band Imaging (NBI) endoscopy and evaluate their diagnostic value in distinguishing the nature of polyps. Methods: A total of 126 patients (768 polyps) diagnosed with colorectal polyp-like lesions during colonoscopy from February 2021 to February 2023 at the First Hospital of Qiqihar were included. The size, morphology, and surface mucosa of polyps were analyzed. Polyps were classified into non-neoplastic polyps and adenomas based on pathological results. The diagnostic value of the NICE classification in determining polyp nature was calculated, and ROC curves were plotted. Results: The proportion of polyps with a diameter ≥1.0 cm in high-grade epithelial dysplasia adenomas was significantly higher than in tubular adenomas, inflammatory polyps, and hyperplastic polyps (P<0.003). The proportion of polyps with a diameter ≥1.0 cm in tubular-villous adenomas was significantly higher than in inflammatory polyps and hyperplastic polyps (P<0.003). The proportion of polyps with a diameter ≥1.0 cm in tubular-villous adenomas was significantly higher than in inflammatory polyps (P<0.003). The Yamada classification of high-grade epithelial dysplasia adenomas differed significantly from that of villous adenomas and hyperplastic polyps (P<0.003). The proportion of lobulated polyps in villous adenomas was significantly higher than in tubular adenomas, high-grade epithelial dysplasia adenomas, inflammatory polyps, tubular-villous adenomas, and hyperplastic polyps (P<0.003). The percentage of polyps with smooth mucosal surfaces in tubular adenomas, inflammatory polyps, tubular-villous adenomas, and hyperplastic polyps was significantly higher than in villous adenomas and high-grade epithelial dysplasia adenomas (P<0.003). The sensitivity, specificity, missed diagnosis rate, and misdiagnosis rate of NICE classification in determining the nature of colorectal polyps were 88.62%, 90.94%, 11.38%, and 9.06%, respectively. Conclusion: Under NBI, there are significant differences in the morphological characteristics, size and surface mucosal characteristics of colorectal polyps in different pathological types, and NBI examination has a high clinical application value in the differential diagnosis of colorectal polyps.
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2024, Vol. 30 
