{"id":18302,"date":"2024-01-09T16:27:14","date_gmt":"2024-01-09T16:27:14","guid":{"rendered":"https:\/\/endoscopiaterapeutica.net\/es\/?p=18302"},"modified":"2024-01-15T17:12:58","modified_gmt":"2024-01-15T17:12:58","slug":"lesiones-serradas-colorrectales-dossier-completo","status":"publish","type":"post","link":"https:\/\/endoscopiaterapeutica.net\/es\/temas-generales\/lesiones-serradas-colorrectales-dossier-completo\/","title":{"rendered":"Lesiones Serradas Colorrectales: Dossier Completo!"},"content":{"rendered":"<h2 class=\"wp-block-heading\" id=\"h-1-introducao\"><strong>1. Introducci\u00f3n<\/strong><\/h2>\n<p>El c\u00e1ncer colorrectal (CCR) es un gran problema de salud p\u00fablica, asociado con una alta tasa de morbilidad y mortalidad en Occidente. El CCR representa el punto final de una amplia gama de alteraciones gen\u00e9ticas y epigen\u00e9ticas que ocurren en c\u00e9lulas colorrectales normales.<\/p>\n<p>Se estima que <strong>aproximadamente el 85% de los CCR se desarrollan a partir de p\u00f3lipos colorrectales.<\/strong> Los p\u00f3lipos adenomatosos y las lesiones serradas s\u00e9siles (LSS o SSL en ingl\u00e9s) son los precursores m\u00e1s importantes del CCR. Se estima que los adenomas y LSS est\u00e1n presentes en el 20% al 50% de los individuos mayores de 50 a\u00f1os [1].<\/p>\n<h2 class=\"wp-block-heading\" id=\"h-2-classificacao-da-oms-para-lesoes-serrilhadas-colorretais\"><strong>2. Clasificaci\u00f3n de la OMS para Lesiones Serradas Colorrectales<\/strong><\/h2>\n<p>Hasta 2010, las lesiones serradas colorrectales generalmente se consideraban como lesiones inofensivas y se informaban como p\u00f3lipos hiperpl\u00e1sicos (PH) por pat\u00f3logos y gastroenter\u00f3logos.<\/p>\n<p>Posteriormente, se utiliz\u00f3 una variedad de t\u00e9rminos para describir estas lesiones, contribuyendo a malentendidos sobre la terminolog\u00eda y clasificaci\u00f3n de las lesiones serradas.<\/p>\n<p>En 2010, la Organizaci\u00f3n Mundial de la Salud (OMS) propuso la siguiente clasificaci\u00f3n para lesiones serradas colorrectales (4\u00aa edici\u00f3n = pen\u00faltima versi\u00f3n hasta la publicaci\u00f3n de este art\u00edculo):<\/p>\n<figure class=\"wp-block-table\">\n<div class=\"pcrstb-wrap\"><table>\n<thead>\n<tr>\n<th class=\"has-text-align-left\" data-align=\"left\"><strong>Tipo Histol\u00f3gico<\/strong><\/th>\n<th><strong>Tipo Histol\u00f3gico<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td class=\"has-text-align-left\" data-align=\"left\">P\u00f3lipo Hiperpl\u00e1sico (PH)<\/td>\n<td>\u2022 Tipo Microvesicular<\/td>\n<\/tr>\n<tr>\n<td class=\"has-text-align-left\" data-align=\"left\"><\/td>\n<td>\u2022 Tipo rico en c\u00e9lulas caliciformes<\/td>\n<\/tr>\n<tr>\n<td class=\"has-text-align-left\" data-align=\"left\"><\/td>\n<td>\u2022 Tipo pobre en mucina<\/td>\n<\/tr>\n<tr>\n<td class=\"has-text-align-left\" data-align=\"left\">Adenoma\/P\u00f3lipo Serrilhado S\u00e9ssil (SSA\/P)<\/td>\n<td>\u2022 SSA\/P con displasia<\/td>\n<\/tr>\n<tr>\n<td class=\"has-text-align-left\" data-align=\"left\"><\/td>\n<td>\u2022 SSA\/P sin displasia<\/td>\n<\/tr>\n<tr>\n<td class=\"has-text-align-left\" data-align=\"left\">Adenoma Serrilhado Tradicional (TSA)<\/td>\n<td><\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div><figcaption class=\"wp-element-caption\"><em>Clasificaci\u00f3n de las Lesiones Serradas Colorrectales (OMS 2010 Antigua 4\u00aa Edici\u00f3n)<\/em><\/figcaption><\/figure>\n<p>En 2019 la OMS actualiz\u00f3 la clasificaci\u00f3n Lesiones serradas colorrectales (5\u00aa. Edici\u00f3n) [2]. Esta nueva clasificaci\u00f3n diferencia lesiones serradas en cuatro categor\u00edas:<\/p>\n<figure class=\"wp-block-table\">\n<div class=\"pcrstb-wrap\"><table>\n<thead>\n<tr>\n<th><strong>Tipo Histol\u00f3gico<\/strong><\/th>\n<th><strong>Subtipo Histol\u00f3gico<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>P\u00f3lipo Hiperpl\u00e1sico (PH)<\/td>\n<td>\u2022 Tipo Microvesicular<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>\u2022 Tipo rico en c\u00e9lulas caliciformes<\/td>\n<\/tr>\n<tr>\n<td>Lesi\u00f3n Serrilhada S\u00e9ssil (LSS)<\/td>\n<td>\u2022 LSS<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>\u2022 LSS con displasia (LSSD)<\/td>\n<\/tr>\n<tr>\n<td>Adenoma Serrilhado Tradicional (TSA)<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Adenoma Serrilhado, No Clasificado<\/td>\n<td><\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div><figcaption class=\"wp-element-caption\"><em>Clasificaci\u00f3n de las Lesiones Serradas Colorrectales (OMS 2019 5\u00aa Edici\u00f3n)<\/em><\/figcaption><\/figure>\n<p>El principal cambio en la terminolog\u00eda es la aprobaci\u00f3n del nuevo t\u00e9rmino <strong>\u201clesi\u00f3n serrilhada s\u00e9ssil\u201d (LSS)<\/strong>, que busca adecuar las terminolog\u00edas anteriores confusas \u201cadenoma s\u00e9ssil serrilhado y p\u00f3lipo s\u00e9ssil serrilhado\u201d. De hecho, el t\u00e9rmino \u201cadenoma\u201d incluye el concepto de displasia, que no se observa en un n\u00famero significativo de LSSs. Ahora, cuando el pat\u00f3logo observa un patr\u00f3n displ\u00e1sico en las LSSs, debe utilizar la terminolog\u00eda <strong>\u201cLSS con displasia\u201d<\/strong>. Adem\u00e1s, gran parte de las LSSs no presentan apariencia polipoide, haciendo el t\u00e9rmino \u201cp\u00f3lipo\u201d inadecuado.<\/p>\n<h2 class=\"wp-block-heading\" id=\"h-3-lesoes-serrilhadas-colorretais-caracteristicas-histologicas-e-endoscopicas\"><strong>3. Lesiones Serradas Colorrectales: Caracter\u00edsticas Histol\u00f3gicas y Endosc\u00f3picas<\/strong><\/h2>\n<p>Microsc\u00f3picamente, las lesiones serradas colorrectales se caracterizan por la presencia de pliegues similares a dientes de sierra en las criptas epiteliales [1]. Las diferencias entre los principales subtipos de lesiones serradas est\u00e1n en las caracter\u00edsticas arquitect\u00f3nicas y en la localizaci\u00f3n\/extensi\u00f3n de la zona proliferativa.<\/p>\n<h3 class=\"wp-block-heading\" id=\"h-3-1-polipos-hiperplasicos-ph\"><strong>3.1 \u2013 P\u00f3lipos Hiperpl\u00e1sicos (PH)<\/strong><\/h3>\n<ul>\n<li>Los PH son las lesiones serradas m\u00e1s comunes, representando alrededor del 75% de todos los p\u00f3lipos serrados.<\/li>\n<li>La prevalencia estimada en pacientes sometidos a colonoscopias de cribado es del 20\u201330%.<\/li>\n<li>En los PH, las criptas son rectas y alargadas, con una arquitectura serrilhada confinada a los dos tercios superiores de las criptas y las c\u00e9lulas muestran m\u00ednima atipia citol\u00f3gica.<\/li>\n<li>En la parte basal de la cripta, la arquitectura es regular y no serrilhada, y las c\u00e9lulas no presentan signos de atipia.<\/li>\n<li>Los PH se encuentran com\u00fanmente en el colon izquierdo, principalmente en el colon rectosigmoide, y normalmente tienen menos de 5 mm.<\/li>\n<li>En la endoscop\u00eda con luz blanca, aparecen como lesiones elevadas o s\u00e9siles, a veces cubiertas con mucosa normal.<\/li>\n<li>En la cromoendoscopia, se observan patr\u00f3n de criptas tipo II del tipo estrellado en la superficie de la lesi\u00f3n.<\/li>\n<\/ul>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><a href=\"https:\/\/endoscopiaterapeutica.com.br\/wp-content\/uploads\/2023\/12\/fig-3-polipo-hiperplasico_-cripta-tipo-II.jpg\" data-rel=\"penci-gallery-image-content\"  data-rel=\"penci-gallery-image-content\" ><img fetchpriority=\"high\" decoding=\"async\" width=\"640\" height=\"274\" src=\"https:\/\/endoscopiaterapeutica.com.br\/wp-content\/uploads\/2023\/12\/fig-3-polipo-hiperplasico_-cripta-tipo-II.jpg?v=1703704860\" alt=\"\" class=\"wp-image-18226\" style=\"width:428px;height:auto\" srcset=\"https:\/\/endoscopiaterapeutica.com.br\/wp-content\/uploads\/2023\/12\/fig-3-polipo-hiperplasico_-cripta-tipo-II.jpg?v=1703704860 640w, https:\/\/endoscopiaterapeutica.com.br\/wp-content\/uploads\/2023\/12\/fig-3-polipo-hiperplasico_-cripta-tipo-II-300x128.jpg?v=1703704860 300w, https:\/\/endoscopiaterapeutica.com.br\/wp-content\/uploads\/2023\/12\/fig-3-polipo-hiperplasico_-cripta-tipo-II-585x250.jpg?v=1703704860 585w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/a><figcaption class=\"wp-element-caption\">P\u00f3lipos s\u00e9siles hiperpl\u00e1sicos. En la magnificaci\u00f3n de imagen con filtro de luz se observa patr\u00f3n de criptas estrellado (tipo II)<\/figcaption><\/figure>\n<\/div>\n<p class=\"has-text-align-center\"><strong>Dos variantes de P\u00f3lipos Hiperpl\u00e1sicos:<\/strong><\/p>\n<ul>\n<li><strong>p\u00f3lipos hiperpl\u00e1sicos de tipo microvesicular:<\/strong>\n<ul>\n<li>caracterizados por la presencia de peque\u00f1as gotas de moco en las c\u00e9lulas<\/li>\n<li>se consideran precursores de LSS.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><a href=\"https:\/\/endoscopiaterapeutica.com.br\/wp-content\/uploads\/2023\/12\/fig-1-PHMV.jpeg\" data-rel=\"penci-gallery-image-content\"  data-rel=\"penci-gallery-image-content\" ><img decoding=\"async\" width=\"720\" height=\"540\" src=\"https:\/\/endoscopiaterapeutica.com.br\/wp-content\/uploads\/2023\/12\/fig-1-PHMV.jpeg?v=1703704298\" alt=\"\" class=\"wp-image-18224\" style=\"width:427px;height:auto\" srcset=\"https:\/\/endoscopiaterapeutica.com.br\/wp-content\/uploads\/2023\/12\/fig-1-PHMV.jpeg?v=1703704298 720w, https:\/\/endoscopiaterapeutica.com.br\/wp-content\/uploads\/2023\/12\/fig-1-PHMV-300x225.jpeg?v=1703704298 300w, https:\/\/endoscopiaterapeutica.com.br\/wp-content\/uploads\/2023\/12\/fig-1-PHMV-585x439.jpeg?v=1703704298 585w\" sizes=\"(max-width: 720px) 100vw, 720px\" \/><\/a><figcaption class=\"wp-element-caption\"> P\u00f3lipo hiperpl\u00e1sico microvesicular: serrilhado presente en las porciones superficiales de las criptas, que est\u00e1n recubiertas por c\u00e9lulas con citoplasma exhibiendo vacuolas apicales. No hay atipias.<\/figcaption><\/figure>\n<\/div>\n<ul>\n<li><strong>p\u00f3lipos hiperpl\u00e1sicos ricos en c\u00e9lulas caliciformes<\/strong>:<\/li>\n<\/ul>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><a href=\"https:\/\/endoscopiaterapeutica.com.br\/wp-content\/uploads\/2023\/12\/fig-2-PHC2.jpeg\" data-rel=\"penci-gallery-image-content\"  data-rel=\"penci-gallery-image-content\" ><img decoding=\"async\" width=\"720\" height=\"540\" src=\"https:\/\/endoscopiaterapeutica.com.br\/wp-content\/uploads\/2023\/12\/fig-2-PHC2.jpeg?v=1703704623\" alt=\"\" class=\"wp-image-18225\" style=\"width:426px;height:auto\" srcset=\"https:\/\/endoscopiaterapeutica.com.br\/wp-content\/uploads\/2023\/12\/fig-2-PHC2.jpeg?v=1703704623 720w, https:\/\/endoscopiaterapeutica.com.br\/wp-content\/uploads\/2023\/12\/fig-2-PHC2-300x225.jpeg?v=1703704623 300w, https:\/\/endoscopiaterapeutica.com.br\/wp-content\/uploads\/2023\/12\/fig-2-PHC2-585x439.jpeg?v=1703704623 585w\" sizes=\"(max-width: 720px) 100vw, 720px\" \/><\/a><figcaption class=\"wp-element-caption\">P\u00f3lipo hiperpl\u00e1sico rico en c\u00e9lulas caliciformes. Observe las criptas ensanchadas y tortuosas, con c\u00e9lulas caliciformes sin atipias.<\/figcaption><\/figure>\n<\/div>\n<h3 class=\"wp-block-heading\" id=\"h-3-2-lesoes-sesseis-serrilhadas-lss\"><strong>3.2 \u2013 Lesiones S\u00e9siles Serradas (LSS)<\/strong><\/h3>\n<ul>\n<li>LSS son el segundo tipo m\u00e1s com\u00fan de lesi\u00f3n serrada y se consideran lesiones precursoras de CRC. (<a href=\"https:\/\/endoscopiaterapeutica.com.br\/assuntosgerais\/lesoes-sesseis-serrilhadas\/\">M\u00e1s detalles etiopatog\u00e9nicos<\/a>)<\/li>\n<li>La prevalencia de LSS en la poblaci\u00f3n general es del 5\u201310%.<\/li>\n<li>Generalmente, LSS son mayores que PH, con un di\u00e1metro promedio entre 5-7 mm, y su forma es plana o s\u00e9sil.<\/li>\n<li>A diferencia de los PH, LSS son m\u00e1s frecuentes en el colon derecho.<\/li>\n<li>La caracter\u00edstica histol\u00f3gica que distingue LSS de PH es la presencia de criptas serradas distorsionadas.<\/li>\n<li>Para el diagn\u00f3stico histol\u00f3gico de LSS, la cripta debe mostrar al menos una de las siguientes caracter\u00edsticas:\n<ol>\n<li>Crecimiento horizontal a lo largo de la <em>capa muscular de la mucosa<\/em>.<\/li>\n<li>Dilataci\u00f3n de la base de la cripta.<\/li>\n<li>Serrilhado extendi\u00e9ndose hasta la base de la cripta.<\/li>\n<li>Proliferaci\u00f3n asim\u00e9trica.<\/li>\n<\/ol>\n<\/li>\n<li>Caracter\u00edsticas endosc\u00f3picas:\n<ul>\n<li>presencia de una capa de moco<\/li>\n<li>Coloraci\u00f3n p\u00e1lida\/blanquecina.<\/li>\n<li>Patr\u00f3n de criptas tipo II-O (abiertas) en la cromoscopia con magnificaci\u00f3n.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><a href=\"https:\/\/endoscopiaterapeutica.com.br\/wp-content\/uploads\/2023\/12\/fig-4-LSS-1.jpeg\" data-rel=\"penci-gallery-image-content\"  data-rel=\"penci-gallery-image-content\" ><img loading=\"lazy\" decoding=\"async\" width=\"720\" height=\"540\" src=\"https:\/\/endoscopiaterapeutica.com.br\/wp-content\/uploads\/2023\/12\/fig-4-LSS-1.jpeg?v=1703705376\" alt=\"\" class=\"wp-image-18228\" style=\"width:455px;height:auto\" srcset=\"https:\/\/endoscopiaterapeutica.com.br\/wp-content\/uploads\/2023\/12\/fig-4-LSS-1.jpeg?v=1703705376 720w, https:\/\/endoscopiaterapeutica.com.br\/wp-content\/uploads\/2023\/12\/fig-4-LSS-1-300x225.jpeg?v=1703705376 300w, https:\/\/endoscopiaterapeutica.com.br\/wp-content\/uploads\/2023\/12\/fig-4-LSS-1-585x439.jpeg?v=1703705376 585w\" sizes=\"(max-width: 720px) 100vw, 720px\" \/><\/a><figcaption class=\"wp-element-caption\">Lesi\u00f3n serrilhada s\u00e9ssil. Bases de las criptas con crecimiento horizontal a lo largo de la capa muscular de la mucosa.<\/figcaption><\/figure>\n<\/div>\n<h3 class=\"wp-block-heading\" id=\"h-3-3-lesoes-sesseis-serrilhadas-com-displasia-lss-d\"><strong>3.3 \u2013 Lesiones S\u00e9siles Serradas con Displasia (LSS-D)<\/strong><\/h3>\n<ul>\n<li>De acuerdo con su potencial carcinog\u00e9nico conocido, LSS pueden originar focos displ\u00e1sicos.<\/li>\n<li>Esta entidad histol\u00f3gica, llamada LSSD, representa un subgrupo de los LSS.<\/li>\n<li>Se estima que alrededor del 4\u20138% de los LSS contienen displasia.<\/li>\n<li>Al menos tres tipos morfol\u00f3gicos diferentes de displasia han sido descritos en LSSD:\n<ul>\n<li>Displasia intestinal (similar a adenoma): rara.<\/li>\n<li>Displasia serrilhada: m\u00e1s com\u00fan.<\/li>\n<li>Displasia de m\u00ednima divergencia: pocos cambios en comparaci\u00f3n con LSS y p\u00e9rdida caracter\u00edstica de MLH1.<\/li>\n<\/ul>\n<\/li>\n<li>Endosc\u00f3picamente, estas lesiones generalmente presentan n\u00f3dulos en la superficie.<\/li>\n<li>Signos como morfolog\u00eda (sub)pediculada, elevaci\u00f3n doble, depresi\u00f3n central y tonalidad rojiza son signos sospechosos de displasia. [3]<\/li>\n<li>En la cromoendoscopia con magnificaci\u00f3n, exhiben un patr\u00f3n de pit adenomatoso (Kudo tipo III, IV). [4]<\/li>\n<\/ul>\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-full is-style-default\"><a href=\"https:\/\/endoscopiaterapeutica.com.br\/wp-content\/uploads\/2023\/12\/fig-6-LSSD1.jpeg\" data-rel=\"penci-gallery-image-content\"  data-rel=\"penci-gallery-image-content\" ><img decoding=\"async\" width=\"\n<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1. Introducci\u00f3n El c\u00e1ncer colorrectal (CCR) es un gran problema de salud p\u00fablica, asociado&hellip;<\/p>\n","protected":false},"author":712,"featured_media":18301,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[151],"tags":[],"ano":[741],"tipo":[156],"volume":[263],"class_list":["post-18302","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-temas-generales","ano-741","tipo-colonoscopia","volume-volumen-i"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.2 (Yoast SEO v27.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Lesiones Serradas Colorrectales: Dossier Completo! &#8226; Endoscopia Terapeutica<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/endoscopiaterapeutica.net\/es\/temas-generales\/lesiones-serradas-colorrectales-dossier-completo\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Lesiones Serradas Colorrectales: Dossier Completo!\" \/>\n<meta property=\"og:description\" content=\"1. 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