{"id":9547,"date":"2025-02-13T20:48:04","date_gmt":"2025-02-13T23:48:04","guid":{"rendered":"https:\/\/gastropedia.pub\/pt\/?p=9547"},"modified":"2025-02-04T14:41:57","modified_gmt":"2025-02-04T17:41:57","slug":"laparoscopia-diagnostica-e-pet-ct-para-o-estadiamento-do-cancer-gastrico","status":"publish","type":"post","link":"https:\/\/gastropedia.pub\/pt\/gastroenterologia\/laparoscopia-diagnostica-e-pet-ct-para-o-estadiamento-do-cancer-gastrico\/","title":{"rendered":"Laparoscopia diagn\u00f3stica e PET-CT para o estadiamento do C\u00e2ncer G\u00e1strico"},"content":{"rendered":"<div class=\"pdfprnt-buttons pdfprnt-buttons-post pdfprnt-top-right\"><a href=\"https:\/\/gastropedia.pub\/pt\/wp-json\/wp\/v2\/posts\/9547?print=pdf\" class=\"pdfprnt-button pdfprnt-button-pdf\" target=\"_blank\" ><img decoding=\"async\" src=\"https:\/\/gastropedia.pub\/pt\/wp-content\/plugins\/pdf-print\/images\/pdf.png\" alt=\"image_pdf\" title=\"Ver PDF\" \/><\/a><a href=\"https:\/\/gastropedia.pub\/pt\/wp-json\/wp\/v2\/posts\/9547?print=print\" class=\"pdfprnt-button pdfprnt-button-print\" target=\"_blank\" ><img decoding=\"async\" src=\"https:\/\/gastropedia.pub\/pt\/wp-content\/plugins\/pdf-print\/images\/print.png\" alt=\"image_print\" title=\"Conte\u00fado de impress\u00e3o\" \/><\/a><\/div>\n<p>O adequado estadiamento de um tumor \u00e9 fundamental para defini\u00e7\u00e3o da conduta terap\u00eautica e proje\u00e7\u00e3o do progn\u00f3stico do paciente. Com rela\u00e7\u00e3o ao c\u00e2ncer g\u00e1strico (CG), a endoscopia com bi\u00f3psia \u00e9 o principal exame para o diagn\u00f3stico e a tomografia computadorizada (TC) de t\u00f3rax, abdome e pelve o principal exame para o estadiamento. Um bom exame de tomografia com utiliza\u00e7\u00e3o de contraste IV para fases arterial e portal com adequada distens\u00e3o da c\u00e2mara g\u00e1strica ap\u00f3s ingest\u00e3o de \u00e1gua VO tem uma boa acur\u00e1cia para o estadiamento da les\u00e3o prim\u00e1ria, linfonodos e les\u00f5es a dist\u00e2ncia.<\/p>\n\n\n\n<p>Entretanto, o estadiamento do perit\u00f4nio sempre foi o \u201cCalcanhar de Aquiles\u201d da tomografia. O CG tem a peculiaridade de frequentemente evoluir com implantes peritoneais que dificilmente s\u00e3o visualizados na TC.<\/p>\n\n\n\n<p>Nesse contexto, a Laparoscopia diagn\u00f3stica passou a ser empregado com complementa\u00e7\u00e3o diagn\u00f3stica para os tumores g\u00e1stricos avan\u00e7ados principalmente quando acometem a serosa. <strong>A Literatura sugere que a taxa de identifica\u00e7\u00e3o de carcinomatose peritoneal oculta com a laparoscopia pode chegar a 20%<\/strong>. Esse valor \u00e9 bem vari\u00e1vel entre os estudos pelo fato de alguns centros realizarem a Laparoscopia de maneira seletiva e outros centros em todos os pacientes com CG. Em recente revis\u00e3o dos dados do HC-FMUSP, Sakamoto et al. (2022) verificaram que houve at\u00e9 30% de mudan\u00e7a de conduta com emprego da Laparoscopia seletiva (figura 1).<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/gastropedia.pub\/pt\/?attachment_id=9548\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"795\" src=\"https:\/\/gastropedia.pub\/pt\/wp-content\/uploads\/2025\/01\/FIGURA-1-1024x795.png\" alt=\"\" class=\"wp-image-9548\" srcset=\"https:\/\/gastropedia.pub\/pt\/wp-content\/uploads\/2025\/01\/FIGURA-1-1024x795.png 1024w, https:\/\/gastropedia.pub\/pt\/wp-content\/uploads\/2025\/01\/FIGURA-1-300x233.png 300w, https:\/\/gastropedia.pub\/pt\/wp-content\/uploads\/2025\/01\/FIGURA-1-768x596.png 768w, https:\/\/gastropedia.pub\/pt\/wp-content\/uploads\/2025\/01\/FIGURA-1-1170x908.png 1170w, https:\/\/gastropedia.pub\/pt\/wp-content\/uploads\/2025\/01\/FIGURA-1-585x454.png 585w, https:\/\/gastropedia.pub\/pt\/wp-content\/uploads\/2025\/01\/FIGURA-1.png 1181w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\"><br><strong>Figura 1<\/strong><br>\u2013 Avalia\u00e7\u00e3o da mudan\u00e7a de conduta terap\u00eautica com o emprego da laparoscopia diagn\u00f3stica em casos selecionados no HC-FMUSP (Sakamoto et. al.,2022). TC= tomografia computadorizada; LD= laparoscopia diagn\u00f3stica<\/figcaption><\/figure>\n\n\n\n<p><br>Achado importante do estudo foi a identifica\u00e7\u00e3o dos fatores de risco que foram associados com a identifica\u00e7\u00e3o de carcinomatose oculta:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Les\u00e3o circunferencial<\/li>\n\n\n\n<li>Les\u00e3o com aspecto macrosc\u00f3pico de<em> Linitis plastica<\/em><\/li>\n\n\n\n<li>Presen\u00e7a de ascite na TC<\/li>\n\n\n\n<li>Presen\u00e7a de n\u00f3dulos peritoniais da TC<\/li>\n\n\n\n<li>Tipo histol\u00f3gico difuso<\/li>\n<\/ol>\n\n\n\n<p><br>Al\u00e9m da Laparoscopia diagn\u00f3stica, outro exame que recentemente passou a ser utilizado para o estadiamento do CG \u00e9 o<br><strong>PET-CT<\/strong> com glicose marcada. O racional desse exame \u00e9 que os tumores apresentam maior metabolismo que o tecido normal e por isso captariam a glicose marcada \u201cacendendo\u201d durante a realiza\u00e7\u00e3o do PET. Infelizmente esse racioc\u00ednio funcionou bem para alguns tipos de tumores, mas apresentou resultados limitados para o CG. <strong>Tumores com c\u00e9lulas pouco coesas em anel de sinete demonstraram baixa capta\u00e7\u00e3o da glicose marcada em estudos pr\u00e9vios<\/strong>.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/gastropedia.pub\/pt\/?attachment_id=9570\"><img decoding=\"async\" width=\"226\" height=\"352\" src=\"https:\/\/gastropedia.pub\/pt\/wp-content\/uploads\/2025\/02\/PET-CT.jpg\" alt=\"\" class=\"wp-image-9570\" srcset=\"https:\/\/gastropedia.pub\/pt\/wp-content\/uploads\/2025\/02\/PET-CT.jpg?v=1738689762 226w, https:\/\/gastropedia.pub\/pt\/wp-content\/uploads\/2025\/02\/PET-CT-193x300.jpg?v=1738689762 193w\" sizes=\"(max-width: 226px) 100vw, 226px\" \/><\/a><\/figure>\n<\/div>\n\n\n<p>Esse breve hist\u00f3rico, introduz o artigo escolhido para apresenta\u00e7\u00e3o nesse post realizado por Gertsen et al (2021) intitulado<br><em>\u201c<\/em><sup><em>18<\/em><\/sup><em>F-Fluodeoxyglucose-Positron Emission Tomography\/Computed Tomography and Laparoscopy for Staging of Locally Advanced Gastric Cancer\u201d<\/em>. Esse estudo multic\u00eantrico Holand\u00eas incluiu 394 pacientes para avaliar a frequ\u00eancia de mudan\u00e7a do tratamento com baseado na adi\u00e7\u00e3o do PET-CT e Laparoscopia no estadiamento.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A inten\u00e7\u00e3o do tratamento mudou de curativa para paliativa em 65 pacientes (16%) com base nos achados adicionais do PET\/CT e Laparoscopia.<\/li>\n\n\n\n<li>O PET-CT detectou met\u00e1stases distantes em 12 pacientes (3%) e a Laparoscopia detectou doen\u00e7a peritoneal ou localmente n\u00e3o ressec\u00e1vel em 73 pacientes (19%), com uma sobreposi\u00e7\u00e3o de ambos os exames alterados em 7 pacientes (2%).<\/li>\n\n\n\n<li>Outros achados foram encontrados no PET-CT em 83 de 382 pacientes (22%), o que levou a exames adicionais em 65 pacientes (16%).<\/li>\n\n\n\n<li>Como conclus\u00e3o, os autores sugerem como sendo v\u00e1lido a inclus\u00e3o da Laparoscopia diagn\u00f3stica no estadiamento de tumores g\u00e1stricos avan\u00e7ados, mas n\u00e3o o PET-CT.<\/li>\n<\/ul>\n\n\n\n<p><br>Entretanto, na pr\u00e1tica observa-se um emprego cada vez mais frequente do PET-CT em rela\u00e7\u00e3o a Laparoscopia. A principal justificativa \u00e9 a facilidade para realiza\u00e7\u00e3o do PET-CT em rela\u00e7\u00e3o a Laparoscopia que por ser um procedimento cir\u00fargico com necessidade de anestesia geral muitas vezes demora para ser agendado. De fato, no estudo, a realiza\u00e7\u00e3o da Laparoscopia atrasou em m\u00e9dia 18 dias a defini\u00e7\u00e3o da conduta.<\/p>\n\n\n\n<p>Por outro lado, a realiza\u00e7\u00e3o do PET-CT de maneira indiscriminada tamb\u00e9m pode atrasar de maneira semelhante o tratamento visto que os pacientes que tiveram achados adicionais no PET-CT tiveram um atraso de 17 dias para in\u00edcio do tratamento pois tiveram que realizar outros exames diagn\u00f3sticos. Dessa forma indica\u00e7\u00e3o individualizada para realiza\u00e7\u00e3o do PET-CT e Laparoscopia persistem sendo a melhor op\u00e7\u00e3o na conduta dos casos de CG.<\/p>\n\n\n\n<p>Como perspectiva futura para melhor acur\u00e1cia dos exames de medicina nuclear surge o PET-FAPI que que \u00e9 baseado no direcionamento molecular prote\u00edna de ativa\u00e7\u00e3o de fibroblastos (FAP) que \u00e9 conhecido por ser altamente expresso na principal popula\u00e7\u00e3o de c\u00e9lulas no estroma tumoral, denominada fibroblastos associados ao c\u00e2ncer principalmente no contexto de tumores com c\u00e9lulas em anel de sinete.<\/p>\n\n\n\n<div style=\"position:relative;padding-top:66.66666666666666%;\"><iframe id=\"panda-04572b0f-7b25-49e2-bb47-4693eb2541dd\" src=\"https:\/\/player-vz-a75e9d45-986.tv.pandavideo.com.br\/embed\/?v=04572b0f-7b25-49e2-bb47-4693eb2541dd\" style=\"border:none;position:absolute;top:0;left:0;\" allow=\"accelerometer;gyroscope;autoplay;encrypted-media;picture-in-picture\" allowfullscreen=true width=\"100%\" height=\"100%\" fetchpriority=\"high\"><\/iframe><\/div>\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>TOOL FOR OPTIMAL GASTRIC CANCER MANAGEMENT. Arq Bras Cir Dig. 2023 Jan 9;35:e1700. doi: 10.1590\/0102-672020220002e1700. PMID: 36629683; PMCID: PMC9830676.<\/li>\n\n\n\n<li>Gertsen EC, Brenkman HJF, van Hillegersberg R, et al.PLASTIC Study Group. 18F-Fludeoxyglucose-Positron Emission Tomography\/Computed Tomography and Laparoscopy for Staging of Locally Advanced Gastric Cancer: A Multicenter Prospective Dutch Cohort Study (PLASTIC). JAMA Surg. 2021 Dec 1;156(12):e215340. doi: 10.1001\/jamasurg.2021.5340. Epub 2021 Dec 8. PMID: 34705049; PMCID: PMC8552113.<\/li>\n\n\n\n<li>Mori Y, Dendl K, Cardinale J, Kratochwil C, Giesel FL, Haberkorn U. FAPI PET: Fibroblast Activation Protein Inhibitor Use in Oncologic and Nononcologic Disease. Radiology. 2023 Feb;306(2):e220749. doi: 10.1148\/radiol.220749. Epub 2023 Jan 3. PMID: 36594838.<\/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\">Ramos MFKP, Laparoscopia diagn\u00f3stica e PET-CT para o estadiamento do C\u00e2ncer G\u00e1strico Gastropedia 2025 Vol 1. Dispon\u00edvel em:<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>O adequado estadiamento de um tumor \u00e9 fundamental para defini\u00e7\u00e3o da conduta terap\u00eautica e proje\u00e7\u00e3o do progn\u00f3stico do paciente. Com rela\u00e7\u00e3o ao c\u00e2ncer g\u00e1strico (CG), a endoscopia com bi\u00f3psia \u00e9&hellip;<\/p>\n","protected":false},"author":5595,"featured_media":9572,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[20,18],"tags":[414,415,416],"ano":[413],"tipo":[121],"volume":[57],"class_list":["post-9547","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-estomago","category-gastroenterologia","tag-cancer-gastrico-2","tag-estadiamento","tag-pet-ct","ano-413","tipo-assuntos-gerais","volume-volume-i"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.2 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Laparoscopia diagn\u00f3stica e PET-CT para o estadiamento do C\u00e2ncer G\u00e1strico - Gastropedia<\/title>\n<meta name=\"description\" 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