{"id":21178,"date":"2026-04-21T07:00:00","date_gmt":"2026-04-21T07:00:00","guid":{"rendered":"https:\/\/endoscopiaterapeutica.net\/pt\/?p=21178"},"modified":"2026-04-20T17:06:25","modified_gmt":"2026-04-20T17:06:25","slug":"resseccao-endoscopica-colorretal-curativa","status":"publish","type":"post","link":"https:\/\/endoscopiaterapeutica.net\/pt\/assuntosgerais\/resseccao-endoscopica-colorretal-curativa\/","title":{"rendered":"Ressequei uma les\u00e3o colorretal&#8230; e agora?"},"content":{"rendered":"\n<p>Ap\u00f3s a ressec\u00e7\u00e3o endosc\u00f3pica de uma les\u00e3o colorretal, vem o momento mais cr\u00edtico da tomada de decis\u00e3o:<\/p>\n\n\n\n<p><strong>Foi curativo\u2026 ou ainda n\u00e3o terminamos o tratamento?<\/strong><\/p>\n\n\n\n<p>Responder essa pergunta depende de v\u00e1rios fatores.<br>E \u00e9 justamente aqui que come\u00e7am as maiores d\u00favidas na pr\u00e1tica cl\u00ednica.<\/p>\n\n\n\n<p>Neste texto, vamos abordar de forma direta e objetiva os principais pontos que voc\u00ea precisa avaliar para definir se a sua ressec\u00e7\u00e3o foi realmente curativa.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-o-que-define-uma-margem-vertical-negativa\"><br><strong>O que define uma margem vertical negativa?<\/strong><\/h2>\n\n\n\n<p>Segundo o guideline de 2022 da ESGE<sup>1<\/sup>:<\/p>\n\n\n\n<p><strong>Idealmente \u2265 1 mm de margem livre.<\/strong><\/p>\n\n\n\n<p>Mas aten\u00e7\u00e3o:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>N\u00e3o existem evid\u00eancias suficientes na literatura para determinar que uma margem com extens\u00e3o &lt; 1mm seja positiva, mas margens inferiores a esse tamanho podem aumentar o risco de recidiva local.<\/li>\n\n\n\n<li>Se a dist\u00e2ncia entre a les\u00e3o e a margem vertical for inferior a 1 mm mas livre de tumor, isso n\u00e3o acarreta em uma mudan\u00e7a de tratamento, sendo recomendado apenas seguimento, que deve ser mais rigoroso<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-resseccao-em-monobloco-com-margens-negativas-r0-e-sinonimo-de-cura\"><br><strong>Ressec\u00e7\u00e3o em monobloco com margens negativas (R0) \u00e9 sin\u00f4nimo de cura?<\/strong><\/h2>\n\n\n\n<p>N\u00c3O necessariamente!<\/p>\n\n\n\n<p>Ter margens livres (R0) \u00e9 essencial, mas est\u00e1 longe de ser suficiente. Outros crit\u00e9rios devem ser avaliados em conjunto. A decis\u00e3o real depende de uma an\u00e1lise histopatol\u00f3gica mais profunda, que vai estimar o risco de met\u00e1stase linfonodal.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-se-nao-basta-ser-r0-o-que-mais-importa\"><br><strong>Se n\u00e3o basta ser R0&#8230; o que mais importa?<\/strong><\/h2>\n\n\n\n<p>Segundo as diretrizes japonesas (JSCCR)<sup>2<\/sup>, a ressec\u00e7\u00e3o s\u00f3 \u00e9 considerada curativa quando TODOS os crit\u00e9rios abaixo est\u00e3o presentes:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Margens livres<\/li>\n\n\n\n<li>Adenocarcinoma bem ou moderadamente diferenciado (tubular ou papil\u00edfero)<\/li>\n\n\n\n<li>Invas\u00e3o submucosa &lt; 1000 \u03bcm (T1a)<\/li>\n\n\n\n<li>Aus\u00eancia de invas\u00e3o linf\u00e1tica ou vascular<\/li>\n\n\n\n<li>Tumor budding baixo (BD1): 0\u20134 buds<\/li>\n<\/ul>\n\n\n\n<p>Se tudo isso estiver presente:<\/p>\n\n\n\n<p><strong>O risco de met\u00e1stase linfonodal \u00e9 muito baixo \u2192 nenhum tratamento adicional \u00e9 necess\u00e1rio<\/strong><\/p>\n\n\n\n<p>J\u00e1 o guideline da ESGE<sup>1<\/sup> prop\u00f5e uma abordagem baseada em estratifica\u00e7\u00e3o de risco:<\/p>\n\n\n\n<p><strong>Muito baixo risco (&lt; 0,5%)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ressec\u00e7\u00e3o en bloc R0<\/li>\n\n\n\n<li>Displasia ou les\u00e3o pT1a (submucosa superficial)<\/li>\n\n\n\n<li>Diferenciada<\/li>\n\n\n\n<li>Sem invas\u00e3o linfovascular<\/li>\n<\/ul>\n\n\n\n<p><strong>Baixo risco (&lt; 2%)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ressec\u00e7\u00e3o en bloc R0<\/li>\n\n\n\n<li>T1b superficial (Sm1)<\/li>\n\n\n\n<li>Diferenciada<\/li>\n\n\n\n<li>Sem invas\u00e3o linfovascular<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-tumor-budding-o-que-e-e-por-que-isso-importa-tanto\"><br><strong><em>Tumor budding<\/em>&#8230; o que \u00e9 e por que isso importa tanto?<\/strong><\/h2>\n\n\n\n<p>O tumor budding corresponde a c\u00e9lulas tumorais isoladas ou pequenos agrupamentos (at\u00e9 4 c\u00e9lulas) localizados na frente invasiva do tumor<sup>4<\/sup>.<\/p>\n\n\n\n<p>Em outras palavras: <strong>\u00e9 um marcador de agressividade tumoral.<\/strong><\/p>\n\n\n\n<p>E \u00e9 exatamente por isso que ele importa tanto: <strong>identifica tumores biologicamente mais agressivos, mesmo quando outros crit\u00e9rios parecem favor\u00e1veis.<\/strong><\/p>\n\n\n\n<p>Na pr\u00e1tica:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>BD1 \u2192 baixo risco<\/li>\n\n\n\n<li>BD2\/BD3 \u2192 maior risco de met\u00e1stase \u2192 considerar tratamento adicional<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-a-profundidade-de-invasao-submucosa-ainda-e-um-criterio-isolado-absoluto\"><br><strong>A profundidade de invas\u00e3o submucosa ainda \u00e9 um crit\u00e9rio isolado absoluto?<\/strong><\/h2>\n\n\n\n<p>Cada vez menos.<\/p>\n\n\n\n<p>Evid\u00eancias recentes mostram que:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A invas\u00e3o \u2265 1000 \u03bcm isoladamente pode superestimar o risco<\/li>\n\n\n\n<li>Quando isolada, o risco de met\u00e1stase linfonodal \u00e9 baixo<\/li>\n\n\n\n<li>N\u00e3o se mant\u00e9m como fator independente em an\u00e1lises ajustadas<\/li>\n<\/ul>\n\n\n\n<p>Uma meta-an\u00e1lise publicada por&nbsp;Zwager e colaboradores<sup>3<\/sup>, que incluiu&nbsp;67 estudos com mais de 21 mil pacientes, mostrou que:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A taxa global de met\u00e1stase linfonodal em c\u00e2ncer colorretal T1 foi&nbsp;<strong>11,2%<\/strong>.<\/li>\n\n\n\n<li>Embora a invas\u00e3o submucosa profunda esteja associada a maior risco em an\u00e1lise univariada,&nbsp;<strong>n\u00e3o se mostrou um fator independente significativo quando ajustada para outros fatores histol\u00f3gicos<\/strong>.<\/li>\n\n\n\n<li>Quando presente&nbsp;<strong>como \u00fanico fator de risco<\/strong>, a taxa absoluta de met\u00e1stase linfonodal foi de aproximadamente&nbsp;<strong>2,6%<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p>Ou seja:<\/p>\n\n\n\n<p><strong>N\u00e3o devemos tomar decis\u00f5es baseadas em um \u00fanico crit\u00e9rio.<\/strong><\/p>\n\n\n\n<p>Essa abordagem mais individualizada tem ganhado espa\u00e7o no manejo contempor\u00e2neo do c\u00e2ncer colorretal precoce.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-mas-e-entao-quando-devo-indicar-tratamento-adicional-apos-resseccao-endoscopica\"><br><strong>Mas e ent\u00e3o&#8230; quando devo indicar tratamento adicional ap\u00f3s ressec\u00e7\u00e3o endosc\u00f3pica?<\/strong><\/h2>\n\n\n\n<p>Quando o risco de met\u00e1stase linfonodal deixa de ser desprez\u00edvel.<\/p>\n\n\n\n<p>Os principais sinais de alerta s\u00e3o:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Margem vertical positiva<\/li>\n\n\n\n<li>Invas\u00e3o submucosa \u2265 1000 \u03bcm (T1b)<\/li>\n\n\n\n<li>Invas\u00e3o linf\u00e1tica ou vascular<\/li>\n\n\n\n<li>Histologia desfavor\u00e1vel:\n<ul class=\"wp-block-list\">\n<li>Pouco diferenciado<\/li>\n\n\n\n<li>Mucinoso<\/li>\n\n\n\n<li>C\u00e9lulas em anel de sinete<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Tumor budding alto (BD2 ou BD3)<\/li>\n<\/ul>\n\n\n\n<p>A presen\u00e7a de qualquer um desses fatores aumenta a probabilidade de dissemina\u00e7\u00e3o linfonodal e, portanto, pode justificar tratamento cir\u00fargico adicional.<\/p>\n\n\n\n<p>No entanto, a decis\u00e3o final n\u00e3o deve ser baseada apenas na histologia. As diretrizes ressaltam que&nbsp;fatores do paciente tamb\u00e9m devem ser considerados, como idade, comorbidades, condi\u00e7\u00e3o funcional e impacto potencial da cirurgia na qualidade de vida.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-mensagem-final\"><br><strong>Mensagem final<\/strong><\/h2>\n\n\n\n<p>A defini\u00e7\u00e3o de ressec\u00e7\u00e3o endosc\u00f3pica curativa no c\u00e2ncer colorretal precoce deve ser baseada em uma avalia\u00e7\u00e3o integrada dos fatores histopatol\u00f3gicos de risco para met\u00e1stase linfonodal e fatores relacionados ao paciente.<\/p>\n\n\n\n<p>Margens negativas e profundidade de invas\u00e3o submucosa, embora fundamentais, n\u00e3o devem ser interpretadas isoladamente.<\/p>\n\n\n\n<p>A estratifica\u00e7\u00e3o adequada do risco requer a an\u00e1lise conjunta de m\u00faltiplos par\u00e2metros, incluindo:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>grau de diferencia\u00e7\u00e3o tumoral<\/li>\n\n\n\n<li>presen\u00e7a de invas\u00e3o linfovascular<\/li>\n\n\n\n<li>tumor budding<\/li>\n\n\n\n<li>padr\u00e3o de ressec\u00e7\u00e3o (en bloc vs piecemeal)<\/li>\n<\/ul>\n\n\n\n<p>Essa abordagem multidimensional permite uma estimativa mais precisa do risco oncol\u00f3gico e orienta de forma mais segura a decis\u00e3o entre seguimento endosc\u00f3pico e tratamento cir\u00fargico adicional.<\/p>\n\n\n\n<p>Portanto, a conduta deve ser individualizada, considerando n\u00e3o apenas os achados histol\u00f3gicos, mas tamb\u00e9m as caracter\u00edsticas cl\u00ednicas do paciente e o impacto potencial das diferentes estrat\u00e9gias terap\u00eauticas.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-referencias\"><strong>Refer\u00eancias<\/strong><\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Endoscopic submucosal dissection for superficial gastrointestinal lesions: European Society of Gastrointestinal Endoscopy (ESGE) Guideline \u2013 Update 2022. Endoscopy, 2022. Pimentel-Nunes Pedro et al.<\/li>\n\n\n\n<li>Japanese Society for Cancer of the Colon and Rectum (JSCCR) guidelines 2024 for the treatment of colorectal cancer.<\/li>\n\n\n\n<li>Deep Submucosal Invasion Is Not an Independent Risk Factor for Lymph Node Metastasis in T1 Colorectal Cancer: A Meta-Analysis. Gastroenterology, 2022. Liselotte W Zwager et al.<\/li>\n\n\n\n<li><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/32601463\" target=\"_blank\" rel=\"noreferrer noopener\">Tumour Budding and Its Clinical Implications in Gastrointestinal Cancers.<\/a> British Journal of Cancer. 2020.&nbsp;Zlobec I, Berger MD, Lugli A.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-como-citar-este-artigo\"><strong>Como citar este artigo<\/strong><\/h2>\n\n\n\n<p class=\"has-very-light-gray-to-cyan-bluish-gray-gradient-background has-background\">Nobre R, Chinem ESS. Ressequei uma les\u00e3o colorretal&#8230; e agora? Endoscopia Terapeutica 2026 Vol I. Dispon\u00edvel em: <a href=\"https:\/\/endoscopiaterapeutica.net\/pt\/?p=21178\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/endoscopiaterapeutica.net\/pt\/assuntosgerais\/ressequei-uma-lesao-colorretal-e-agora\/<\/a><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>Quer aprofundar a discuss\u00e3o sobre ressec\u00e7\u00e3o endosc\u00f3pica colorretal? <a href=\"https:\/\/endoscopiaterapeutica.net\/pt\/assuntosgerais\/resseccoes-de-colon-com-invasao-acima-de-1000-micras-sm1-acometimento-linfovascular-pouco-diferenciadas-e-budding-de-alto-risco-tem-sempre-indicacao-cirurgica\/\" type=\"link\" id=\"https:\/\/endoscopiaterapeutica.net\/pt\/assuntosgerais\/resseccoes-de-colon-com-invasao-acima-de-1000-micras-sm1-acometimento-linfovascular-pouco-diferenciadas-e-budding-de-alto-risco-tem-sempre-indicacao-cirurgica\/\">Acesse<\/a>!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ap\u00f3s a ressec\u00e7\u00e3o endosc\u00f3pica de uma les\u00e3o colorretal, vem o momento mais cr\u00edtico da&hellip;<\/p>\n","protected":false},"author":3872,"featured_media":21182,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[151],"tags":[365,342,325,835],"ano":[847],"tipo":[156],"volume":[263],"class_list":["post-21178","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-assuntosgerais","tag-cancer-colorretal","tag-colonoscopia","tag-esd","tag-resseccao-completa","ano-847","tipo-colonoscopia","volume-volume-i"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.2 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Ressec\u00e7\u00e3o endosc\u00f3pica colorretal curativa: Crit\u00e9rios e Conduta<\/title>\n<meta name=\"description\" content=\"Saiba como definir se uma ressec\u00e7\u00e3o endosc\u00f3pica colorretal curativa foi alcan\u00e7ada. 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