Department of Gastroenterology, Cleveland Clinic Florida, Weston, FL 33331, United States.
World J Gastroenterol. 2011 Sep 21;17(35):4001-6. doi: 10.3748/wjg.v17.i35.4001.
To investigate the rates of polyp detection in a mixed risk population using standard definition (SDC) vs high definition colonoscopes (HDC).
This was a retrospective cohort comparative study of 3 colonoscopists who each consecutively performed 150 SDC (307, 200 pixel) and 150 HDC (792, 576 pixels) in a community teaching hospital.
A total of 900 colonoscopies were evaluated (mean age 56, 46.8% men), 450 with each resolution. Polyps of any type were detected in 46.0% of patients using SDC and 43.3% with HDC (P = 0.42). There was no significant difference between the overall number of polyps, HDC (397) and SDC (410), detected among all patients examined, (P = 0.73). One or more adenomatous polyps were detected in 24.2% of patients with HDC and 24.9% of patients with SDC colonoscopy (P = 0.82). There was no significant difference between HDC (M = 0.41) and SDC (M = 0.42) regarding adenomatous polyp (P = 0.88) or advanced adenoma (P = 0.56) detection rate among all patients examined.
HDC did not improve yield of adenomatous polyp, advanced adenoma or overall polyp detection in a population of individuals with mixed risk for colorectal cancer.
使用标准定义（SDC）和高清结肠镜（HDC）检测混合风险人群中息肉的检出率。
这是一项回顾性队列比较研究，共有 3 名结肠镜检查医生分别连续对社区教学医院中的 150 例 SDC（307，200 像素）和 150 例 HDC（792，576 像素）进行了评估。
共评估了 900 例结肠镜检查（平均年龄 56 岁，46.8%为男性），每种分辨率各 450 例。使用 SDC 检测到 46.0%的患者存在任何类型的息肉，而使用 HDC 检测到 43.3%的患者存在息肉（P=0.42）。所有接受检查的患者中，HDC（397 个）和 SDC（410 个）检测到的总息肉数量没有显著差异（P=0.73）。HDC 组（24.2%）和 SDC 组（24.9%）的患者均有 1 个或更多腺瘤性息肉，两组间无显著差异（P=0.82）。所有接受检查的患者中，HDC（M=0.41）和 SDC（M=0.42）的腺瘤性息肉（P=0.88）或高级腺瘤（P=0.56）检出率无显著差异。
在结直肠癌混合风险人群中，HDC 并未提高腺瘤性息肉、高级腺瘤或总体息肉的检出率。
