Proposal of a new visual analogue scale to describe the extent of lymphadenectomy in right-sided colectomy for cancer – A prospective observational study

Proposal of a new visual analogue scale to describe the extent of lymphadenectomy in right-sided colectomy for cancer – A prospective observational study | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Proposal of a new visual analogue scale to describe the extent of lymphadenectomy in right-sided colectomy for cancer – A prospective observational study Frank Pfeffer, Petter. Kalgraff, Kristin. B. Lygre, Bjorn S. Nedrebo, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6446786/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 02 Sep, 2025 Read the published version in Techniques in Coloproctology → Version 1 posted 9 You are reading this latest preprint version Abstract Background : Lymphadenectomy in right-sided colon cancer lacks standardized reporting. The aim was to develop a visual analogue scale (VAS) based on mesenteric vessels to describe the extent of lymphadenectomy. Methods : We included patients undergoing surgery for right-sided colon cancer from January 2021 to September 2024. Data were collected via a web-based database. Immediately after surgery, surgeons recorded the VAS score, vascular visualization, and specimen quality. Results : Data from 155 patients were analyzed. Median age was 74 (IQR: 68–80), with 53% female. The median VAS score was 8.2 (IQR: 7.8–8.9). The superior mesenteric vein (SMV) was visualized in 84% of cases, with a median VAS score of 8.4 (IQR: 8.0–9.2) for visualized and 7.0 (IQR: 6.8–7.5) for non-visualized (p < 0.001). The gastrocolic trunk of Henle (GTH) was visualized in 51%, with a median VAS score of 8.7 (IQR: 8.3–9.7) for visualized and 7.9 (IQR: 7.3–8.0) for non-visualized (p < 0.001). Specimen quality was Type 0 (best) in 54% (VAS score 8.6, IQR: 8.2–9.5), Type I in 37% (VAS score 7.9, IQR: 7.3–8.0), and Type II in 6% (VAS score 6.9, IQR: 6.5–7.9; p < 0.001). A positive correlation between VAS score and lymph node count was found (r = 0.43, p < 0.001). Conclusions : The VAS score is a reliable and feasible method to describe lymphadenectomy in right-sided colon cancer. Unlike categorical classifications, the VAS score is based on anatomical landmarks and does not depend on consensus definitions. It reflects the visualization of vascular structures and correlates with specimen quality and lymph node yield. ClinicalTrials.gov Identifier: NCT06329102 (registered on March 24, 2024) Right-sided colon cancer lymphadenectomy visual analogue scale surgical quality assessment mesenteric lymph node dissection specimen evaluation Full Text Additional Declarations No competing interests reported. Supplementary Files RRCintraoperativeformtwosided.pdf Cite Share Download PDF Status: Published Journal Publication published 02 Sep, 2025 Read the published version in Techniques in Coloproctology → Version 1 posted Editorial decision: Revision requested 26 May, 2025 Reviews received at journal 25 May, 2025 Reviewers agreed at journal 09 May, 2025 Reviews received at journal 07 May, 2025 Reviewers agreed at journal 07 May, 2025 Reviewers invited by journal 05 May, 2025 Editor assigned by journal 04 May, 2025 Submission checks completed at journal 15 Apr, 2025 First submitted to journal 14 Apr, 2025 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-6446786","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":453422205,"identity":"0c6bce37-7e0f-4bd0-ad52-619311d164ff","order_by":0,"name":"Frank Pfeffer","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA40lEQVRIie2QPQrCQBBGZxlImlHbXfQQG4QEschhBL2BKIhsEFIFbC3EM1hZRwKp9AaCESG9jWDnBhurjXaC+2CKge8xPwAWyw/iKgCmqwW4LwAmQLJOofSlCOUMdPjwtcJigHqlnZWXFZx4y0F2nW6yTgCNakWD0hwG3hZKLmJE77jLqKeaA+OkkMAXBWRzeV7mItKKTMnnxink3iuFhzm6j2j9kUK+2GpFOuiwSH2mjMVKlpzniELlI+otqGu8RS+2E8lEfyxGdlOzfhi4iVeYlBcyfWuwPl+R1iYsFovlj3kCmXhALlzr9tEAAAAASUVORK5CYII=","orcid":"","institution":"Haukeland University Hospital","correspondingAuthor":true,"prefix":"","firstName":"Frank","middleName":"","lastName":"Pfeffer","suffix":""},{"id":453422206,"identity":"af676d80-db0d-442c-9d2d-ef8e2e2c0f70","order_by":1,"name":"Petter. 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The aim was to develop a visual analogue scale (VAS) based on mesenteric vessels to describe the extent of lymphadenectomy.\u0026nbsp;\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eMethods\u003c/strong\u003e: We included patients undergoing surgery for right-sided colon cancer from January 2021 to September 2024. Data were collected via a web-based database. Immediately after surgery, surgeons recorded the VAS score, vascular visualization, and specimen quality.\u0026nbsp;\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eResults\u003c/strong\u003e: Data from 155 patients were analyzed. Median age was 74 (IQR: 68–80), with 53% female. The median VAS score was 8.2 (IQR: 7.8–8.9). The superior mesenteric vein (SMV) was visualized in 84% of cases, with a median VAS score of 8.4 (IQR: 8.0–9.2) for visualized and 7.0 (IQR: 6.8–7.5) for non-visualized (p \u0026lt; 0.001). The gastrocolic trunk of Henle (GTH) was visualized in 51%, with a median VAS score of 8.7 (IQR: 8.3–9.7) for visualized and 7.9 (IQR: 7.3–8.0) for non-visualized (p \u0026lt; 0.001). Specimen quality was Type 0 (best) in 54% (VAS score 8.6, IQR: 8.2–9.5), Type I in 37% (VAS score 7.9, IQR: 7.3–8.0), and Type II in 6% (VAS score 6.9, IQR: 6.5–7.9; p \u0026lt; 0.001). A positive correlation between VAS score and lymph node count was found (r = 0.43, p \u0026lt; 0.001).\u0026nbsp;\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eConclusions\u003c/strong\u003e: The VAS score is a reliable and feasible method to describe lymphadenectomy in right-sided colon cancer. Unlike categorical classifications, the VAS score is based on anatomical landmarks and does not depend on consensus definitions. 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