{"id":22574,"date":"2023-09-27T12:39:07","date_gmt":"2023-09-27T10:39:07","guid":{"rendered":"https:\/\/p698827.webspaceconfig.de\/2023\/09\/27\/pearls-and-pitfalls-of-structured-staging-and-reporting-of-rectal-cancer-on-mri-an-international-multireader-study\/"},"modified":"2026-03-25T16:58:44","modified_gmt":"2026-03-25T15:58:44","slug":"pearls-and-pitfalls-of-structured-staging-and-reporting-of-rectal-cancer-on-mri-an-international-multireader-study","status":"publish","type":"post","link":"https:\/\/www.bauer-diagnostics.com\/hu\/2023\/09\/27\/pearls-and-pitfalls-of-structured-staging-and-reporting-of-rectal-cancer-on-mri-an-international-multireader-study\/","title":{"rendered":"PEARLS AND PITFALLS OF STRUCTURED STAGING AND REPORTING OF RECTAL CANCER ON MRI: AN INTERNATIONAL MULTIREADER STUDY"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"22574\" class=\"elementor elementor-22574 elementor-22530\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-60121b0 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"60121b0\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-e14321e\" data-id=\"e14321e\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-619dd07 elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"619dd07\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-calendar\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">2023.09.27.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-03ef623 elementor-widget elementor-widget-heading\" data-id=\"03ef623\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">PEARLS AND PITFALLS OF STRUCTURED STAGING AND REPORTING OF RECTAL CANCER ON MRI: AN INTERNATIONAL MULTIREADER STUDY<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-98a281b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"98a281b\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-custom\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-686cd08\" data-id=\"686cd08\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b52acfd elementor-widget elementor-widget-image\" data-id=\"b52acfd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"282\" height=\"218\" src=\"https:\/\/www.bauer-diagnostics.com\/wp-content\/uploads\/2025\/10\/Veroeff_08.webp\" class=\"attachment-large size-large wp-image-22571\" alt=\"\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-8018f6e\" data-id=\"8018f6e\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a7c6ca0 elementor-widget elementor-widget-image\" data-id=\"a7c6ca0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"200\" height=\"264\" src=\"https:\/\/www.bauer-diagnostics.com\/wp-content\/uploads\/2023\/09\/Unbenannt-1-292x371-2.webp\" class=\"attachment-large size-large wp-image-22572\" alt=\"\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-23507d5 elementor-widget elementor-widget-text-editor\" data-id=\"23507d5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Dr. Ferdinand Bauer is a member of the rectal MRI study group and co-author<\/strong><\/p>\n<h3 class=\"title\">ABSTRACT<\/h3>\n<div id=\"eng-abstract\" class=\"abstract-content selected\">\n<p><strong class=\"sub-title\">Objectives: <br \/><\/strong>To investigate uniformity and pitfalls in structured radiological staging of rectal cancer.<\/p>\n<p><strong class=\"sub-title\">Method: <br \/><\/strong>Twenty-one radiologists (12 countries) staged 75 rectal cancers on MRI using a structured reporting template. Interobserver agreement (IOA) was calculated as the percentage agreement between readers (categorical variables) and Krippendorff\u2019s \u03b1 (continuous variables). Agreement with an expert consensus served as a surrogate standard of reference to estimate diagnostic accuracy. Polychoric correlation coefficients were used to assess correlations between diagnostic confidence and accuracy (=agreement with expert consensus).<\/p>\n<p><strong class=\"sub-title\">Results: <br \/><\/strong>Uniformity to diagnose high-risk (\u2265cT3 ab) versus low-risk (\u2264cT3 cd) cT-stage, cN0 versus cN+, lateral nodes and tumour deposits, MRF and sphincter involvement, and solid versus mucinous tumours was high with IOA &gt; 80% in the majority of cases (and &gt;80% agreement with expert consensus). Results for assessing extramural vascular invasion, cT-stage (cT1-2\/cT3\/cT4a\/cT4b), cN-stage (cN0\/N1\/N2), relation to the peritoneal reflection, extent of sphincter involvement (internal\/intersphincteric\/external) and morphology (solid\/annular\/semi-annular) were considerably poorer. IOA was high (\u03b1 = 0.72\u20130.84) for tumour height\/length and extramural invasion depth, but low for tumour-MRF distance and number of (suspicious) nodes (\u03b1 = 0.05\u20130.55). There was a significant positive correlation between diagnostic confidence and accuracy (=agreement with expert consensus) (p &lt; 0.001-p = 0.003).<\/p>\n<p><strong class=\"sub-title\">Conclusions:<br \/><\/strong>\u2013 Several staging items lacked sufficient<br \/>reproducibility.<br \/>\u2013 Results for cT- and N-staging g improved when using a dichotomized stratification.<br \/>\u2013 Considering the significant correlation between diagnostic confidence and accuracy, a confidence level may be incorporated into structured reporting for specific items with low reproducibility.<\/p>\n<p><strong class=\"sub-title\">Advances in knowledge: <br \/><\/strong>Although structured reporting aims to achieve uniformity in reporting, several items lack sufficient reproducibility and might benefit from dichotomized assessment and incorporating confidence levels.<\/p>\n<\/div>\n<p>This medical abstract is published in the following media:<\/p>\n<h2>Published as:<\/h2>\n<p>el Khababi N, Beets-Tan RG.H, Curvo-Semedo L, Tissier R, Nederend J, Lahaye MJ, et al. Pearls and pitfalls of structured staging and reporting of rectal cancer on MRI: an international multireader study. Br J Radiol (2023) 10.1259\/bjr.20230091.<\/p>\n<p><strong>\u00a9 2023 The Authors. Published by the British Institute of Radiology under the terms of the Creative Commons <\/strong><\/p>\n<p><strong>Attribution-NonCommercial<\/strong><\/p>\n<p>The full-length publication in English can be found at the following link:<\/p>\n<p><a href=\"https:\/\/www.birpublications.org\/doi\/10.1259\/bjr.20230091\" target=\"_blank\" rel=\"noopener\"><strong>To the publication<\/strong><\/a><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-0f01159\" data-id=\"0f01159\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f4acb81 elementor-widget elementor-widget-heading\" data-id=\"f4acb81\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Kiadv\u00e1nyok<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Dr. Ferdinand Bauer is a member of the rectal MRI study group and co-author ABSTRACT Objectives: To investigate uniformity and pitfalls in structured radiological staging of rectal cancer. Method: Twenty-one radiologists (12 countries) staged 75 rectal cancers on MRI using a structured reporting template. Interobserver agreement (IOA) was calculated as the percentage agreement between readers [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":22573,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[350],"tags":[],"class_list":["post-22574","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kiadvanyok"],"_links":{"self":[{"href":"https:\/\/www.bauer-diagnostics.com\/hu\/wp-json\/wp\/v2\/posts\/22574","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bauer-diagnostics.com\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bauer-diagnostics.com\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bauer-diagnostics.com\/hu\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bauer-diagnostics.com\/hu\/wp-json\/wp\/v2\/comments?post=22574"}],"version-history":[{"count":5,"href":"https:\/\/www.bauer-diagnostics.com\/hu\/wp-json\/wp\/v2\/posts\/22574\/revisions"}],"predecessor-version":[{"id":26928,"href":"https:\/\/www.bauer-diagnostics.com\/hu\/wp-json\/wp\/v2\/posts\/22574\/revisions\/26928"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bauer-diagnostics.com\/hu\/wp-json\/wp\/v2\/media\/22573"}],"wp:attachment":[{"href":"https:\/\/www.bauer-diagnostics.com\/hu\/wp-json\/wp\/v2\/media?parent=22574"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bauer-diagnostics.com\/hu\/wp-json\/wp\/v2\/categories?post=22574"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bauer-diagnostics.com\/hu\/wp-json\/wp\/v2\/tags?post=22574"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}