Usefulness of a Colonoscopy Cap with an External Grid for the Measurement of Small-Sized Colorectal Polyps: A Prospective Randomized Trial
Accurate measurement of polyp size during colonoscopy is crucial. The usefulness of cap-assisted colonoscopy and external grid application on monitor (gCAP) was evaluated for polyp size measurement in this 3-year, single-center, single-blind, randomized trial. Using the endoscopic forceps width as r...
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| Format: | Article |
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MDPI AG
2021-05-01
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| Series: | Journal of Clinical Medicine |
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| Online Access: | https://www.mdpi.com/2077-0383/10/11/2365 |
| _version_ | 1797532338048991232 |
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| author | Seul-Ki Han Hyunil Kim Jin-woo Kim Hyun-Soo Kim Su-Young Kim Hong-Jun Park |
| author_facet | Seul-Ki Han Hyunil Kim Jin-woo Kim Hyun-Soo Kim Su-Young Kim Hong-Jun Park |
| author_sort | Seul-Ki Han |
| collection | DOAJ |
| description | Accurate measurement of polyp size during colonoscopy is crucial. The usefulness of cap-assisted colonoscopy and external grid application on monitor (gCAP) was evaluated for polyp size measurement in this 3-year, single-center, single-blind, randomized trial. Using the endoscopic forceps width as reference, the discrepancy percent (DP), error rate (ER), and measurement time were compared between gCAP and visual estimation (VE) after randomization. ER was calculated within a 20% and 33% limit. From the 111 patients, 280 polyps were measured. The mean polyp sizes were 4.0 ± 1.7 mm and 4.2 ± 1.8 mm with gCAP and VE, respectively (<i>p</i> = 0.368). Compared with that by the forceps method, DP was significantly lower in the gCAP group than in the VE group. Moreover, ER was significantly lower in the gCAP group within its preset limit. The measurement time was 4 s longer in the gCAP group than in the VE group (8.2 ± 4.8 s vs. 4.2 ± 1.5 s; <i>p</i> < 0.001). However, the forceps method lasted 28 s longer than the others. On subgroup analysis by size, gCAP was more accurate for polyp size ≥ 5 mm. The gCAP method was more accurate for polyp size measurement than VE, especially for polyps ≥ 5 mm, and was more convenient than the forceps method. |
| first_indexed | 2024-03-10T10:58:44Z |
| format | Article |
| id | doaj.art-9b381560165d408e95f05aeedea2b73f |
| institution | Directory Open Access Journal |
| issn | 2077-0383 |
| language | English |
| last_indexed | 2024-03-10T10:58:44Z |
| publishDate | 2021-05-01 |
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| series | Journal of Clinical Medicine |
| spelling | doaj.art-9b381560165d408e95f05aeedea2b73f2023-11-21T21:43:16ZengMDPI AGJournal of Clinical Medicine2077-03832021-05-011011236510.3390/jcm10112365Usefulness of a Colonoscopy Cap with an External Grid for the Measurement of Small-Sized Colorectal Polyps: A Prospective Randomized TrialSeul-Ki Han0Hyunil Kim1Jin-woo Kim2Hyun-Soo Kim3Su-Young Kim4Hong-Jun Park5Department of Internal Medicine, Wonju College of Medicine, Yonsei University, Wonju 24626, KoreaDepartment of Internal Medicine, Wonju College of Medicine, Yonsei University, Wonju 24626, KoreaDepartment of Internal Medicine, Wonju College of Medicine, Yonsei University, Wonju 24626, KoreaDepartment of Internal Medicine, Wonju College of Medicine, Yonsei University, Wonju 24626, KoreaDepartment of Internal Medicine, Wonju College of Medicine, Yonsei University, Wonju 24626, KoreaDepartment of Internal Medicine, Wonju College of Medicine, Yonsei University, Wonju 24626, KoreaAccurate measurement of polyp size during colonoscopy is crucial. The usefulness of cap-assisted colonoscopy and external grid application on monitor (gCAP) was evaluated for polyp size measurement in this 3-year, single-center, single-blind, randomized trial. Using the endoscopic forceps width as reference, the discrepancy percent (DP), error rate (ER), and measurement time were compared between gCAP and visual estimation (VE) after randomization. ER was calculated within a 20% and 33% limit. From the 111 patients, 280 polyps were measured. The mean polyp sizes were 4.0 ± 1.7 mm and 4.2 ± 1.8 mm with gCAP and VE, respectively (<i>p</i> = 0.368). Compared with that by the forceps method, DP was significantly lower in the gCAP group than in the VE group. Moreover, ER was significantly lower in the gCAP group within its preset limit. The measurement time was 4 s longer in the gCAP group than in the VE group (8.2 ± 4.8 s vs. 4.2 ± 1.5 s; <i>p</i> < 0.001). However, the forceps method lasted 28 s longer than the others. On subgroup analysis by size, gCAP was more accurate for polyp size ≥ 5 mm. The gCAP method was more accurate for polyp size measurement than VE, especially for polyps ≥ 5 mm, and was more convenient than the forceps method.https://www.mdpi.com/2077-0383/10/11/2365colonic polypresectioncolorectal cancer |
| spellingShingle | Seul-Ki Han Hyunil Kim Jin-woo Kim Hyun-Soo Kim Su-Young Kim Hong-Jun Park Usefulness of a Colonoscopy Cap with an External Grid for the Measurement of Small-Sized Colorectal Polyps: A Prospective Randomized Trial Journal of Clinical Medicine colonic polyp resection colorectal cancer |
| title | Usefulness of a Colonoscopy Cap with an External Grid for the Measurement of Small-Sized Colorectal Polyps: A Prospective Randomized Trial |
| title_full | Usefulness of a Colonoscopy Cap with an External Grid for the Measurement of Small-Sized Colorectal Polyps: A Prospective Randomized Trial |
| title_fullStr | Usefulness of a Colonoscopy Cap with an External Grid for the Measurement of Small-Sized Colorectal Polyps: A Prospective Randomized Trial |
| title_full_unstemmed | Usefulness of a Colonoscopy Cap with an External Grid for the Measurement of Small-Sized Colorectal Polyps: A Prospective Randomized Trial |
| title_short | Usefulness of a Colonoscopy Cap with an External Grid for the Measurement of Small-Sized Colorectal Polyps: A Prospective Randomized Trial |
| title_sort | usefulness of a colonoscopy cap with an external grid for the measurement of small sized colorectal polyps a prospective randomized trial |
| topic | colonic polyp resection colorectal cancer |
| url | https://www.mdpi.com/2077-0383/10/11/2365 |
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