Is in vivo measurement of size of polyps during colonoscopy accurate?
Is in vivo measurement of size of polyps during colonoscopy accurate?
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DOI：
10.1016/s0016-5107(97)70003-8
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发表时间：
1997-12-01
影响因子：
7.7
通讯作者：
Barde, CJ
中科院分区：
文献类型：
--
作者：
Gopalswamy, N;Shenoy, VN;Barde, CJ
背景：结肠镜检查期间准确测量息肉大小非常重要，因为息肉大小与结肠癌直接相关。结直肠肿瘤的主要研究以不同的方式测量息肉的大小。还有充分的证据表明内窥镜医生经常低估息肉的大小。这项前瞻性研究的目的是确定结肠镜检查期间估计息肉大小的五种方法中哪一种最准确。 方法：通过目视估计、开放活检钳方法、线性探针、切除后立即使用尺子以及福尔马林固定后测量 100 个结肠息肉。切除后立即在体外测量的息肉大小被认为是所有测量结果进行比较的“金标准”。结果：47 个息肉直径小于或等于 5 毫米，33 个息肉直径为 5.01 毫米至 10 毫米，20 个息肉直径超过 10 毫米。对于所有息肉，线性探针与息肉实际大小的平均差异为 3.4%，视觉估计为 6.4%，镊子为 12.3%。结论：线性探针测量的息肉大小与实际息肉大小最一致，其次是视觉估计。开放式活检钳方法的准确性最差。
Background: Accurate measurement of polyp size during colonoscopy is important because of the direct correlation of size with colon cancer. Major studies of colorectal neoplasms have measured polyp size differently. It is also well documented that endoscopists underestimate polyp size frequently. The goal of this prospective study was to determine which one of the five methods of estimating polyp size during colonoscopy is most accurate.Methods: One hundred colon polyps were measured by means of visual estimation, open biopsy forceps methods, linear probe, a ruler immediately after excision, and after fixation in formalin. The size of the polyps measured outside the body immediately after excision was considered the "gold standard" against which all measurements were compared.Results: Forty-seven polyps were 5 mm or less in diameter, 33 polyps were 5.01 mm to 10 mm, and 20 polyps were more than 10 mm in size. For all polyps the mean difference versus the actual size of the polyps was 3.4% for linear probe, 6.4% for visual estimation, and 12.3% for the forceps.Conclusion: Measurement of polyp size by linear probe agreed best with the actual polyp size, followed closely by visual estimation. The open biopsy forceps method was the least accurate.