{"id":9373,"date":"2026-10-19T12:00:00","date_gmt":"2026-10-19T10:00:00","guid":{"rendered":"https:\/\/gastropedia.pub\/es\/?p=9373"},"modified":"2026-10-13T04:35:26","modified_gmt":"2026-10-13T02:35:26","slug":"amiloidosis-intestinal-un-diagnostico-diferencial-importante-pero-raramente-recordado","status":"publish","type":"post","link":"https:\/\/gastropedia.pub\/es\/gastroenterologia\/amiloidosis-intestinal-un-diagnostico-diferencial-importante-pero-raramente-recordado\/","title":{"rendered":"Amiloidosis Intestinal: un diagn\u00f3stico diferencial importante, pero raramente recordado"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><br>Palabras clave: Amiloidosis intestinal<\/p>\n\n\n\n<h2 id=\"h-por-que-este-tema-es-relevante\" class=\"wp-block-heading\"><br><strong>\u00bfPor qu\u00e9 este tema es relevante?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">La amiloidosis intestinal es una causa infrecuente, pero cl\u00ednicamente relevante, de s\u00edntomas gastrointestinales cr\u00f3nicos, p\u00e9rdida de peso, dismotilidad y sangrado digestivo. Los pacientes frecuentemente simulan condiciones m\u00e1s prevalentes, prolongando el viaje diagn\u00f3stico.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Debe realizarse una investigaci\u00f3n asertiva para descartar otras enfermedades como:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Enfermedad inflamatoria intestinal<\/li>\n\n\n\n<li>S\u00edndrome del intestino irritable<\/li>\n\n\n\n<li>Gastroparesia \/ dismotilidad<\/li>\n\n\n\n<li>Colitis microsc\u00f3picas<\/li>\n<\/ul>\n\n\n\n<h2 id=\"h-el-desafio-central\" class=\"wp-block-heading\"><br><strong>El desaf\u00edo central:<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">El principal desaf\u00edo no es solo conocer la enfermedad, sino sospecharla en el contexto adecuado y realizar investigaci\u00f3n endosc\u00f3pica dirigida.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2192 Los hallazgos endosc\u00f3picos pueden ser m\u00ednimos o ausentes \u2014 la sospecha cl\u00ednica es esencial.<\/p>\n\n\n\n<h2 id=\"h-cuando-sospechar\" class=\"wp-block-heading\"><br><strong>\u00bfCu\u00e1ndo sospechar?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Los s\u00edntomas persistentes, multisist\u00e9micos o desproporcionados a los hallazgos de rutina deben levantar sospecha.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>P\u00e9rdida de peso progresiva, con anorexia, saciedad precoz o diarrea cr\u00f3nica sin etiolog\u00eda definida.<\/li>\n\n\n\n<li>Diarrea refractaria con hipoalbuminemia, edema y deficiencias nutricionales \u2014 perfil de enteropat\u00eda infiltrativa.<\/li>\n\n\n\n<li>Dismotilidad gastrointestinal: gastroparesia, pseudoobstrucci\u00f3n, constipaci\u00f3n refractaria o alternancia del h\u00e1bito intestinal.<\/li>\n\n\n\n<li>Sangrado obscuro: anemia ferrop\u00e9nica, melena recurrente o p\u00e9rdida cr\u00f3nica oculta sin fuente identificada.<\/li>\n\n\n\n<li>Signos sist\u00e9micos: insuficiencia card\u00edaca con fracci\u00f3n de eyecci\u00f3n preservada, proteinuria, neuropat\u00eda perif\u00e9rica o hipotensi\u00f3n postural asociadas a s\u00edntomas digestivos.<\/li>\n<\/ul>\n\n\n\n<h2 id=\"h-fisiopatologia-y-hallazgos-endoscopicos\" class=\"wp-block-heading\"><br><strong>Fisiopatolog\u00eda y hallazgos endosc\u00f3picos<\/strong><\/h2>\n\n\n\n<h3 id=\"h-tres-mecanismos-principales\" class=\"wp-block-heading\"><br><strong>Tres mecanismos principales:<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Infiltraci\u00f3n mucosa: malabsorci\u00f3n, diarrea, enteropat\u00eda perdedora de prote\u00ednas, fragilidad de la mucosa.<\/li>\n\n\n\n<li>Infiltraci\u00f3n neuromuscular: gastroparesia, lentificaci\u00f3n del tr\u00e1nsito, constipaci\u00f3n, pseudoobstrucci\u00f3n.<\/li>\n\n\n\n<li>Deposici\u00f3n vascular: sangrado, isquemia focal, ulceraciones.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"h-hallazgos-endoscopicos-eda\" class=\"wp-block-heading\"><br><strong>Hallazgos endosc\u00f3picos &#8211; EDA:<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Duodeno \u2014 mayor rendimiento diagn\u00f3stico:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Mucosa granular fina \/ placas blanquecinas<\/li>\n\n\n\n<li>Nodularidad, fragilidad, pliegues engrosados<\/li>\n\n\n\n<li>M\u00faltiples protrusiones polipo\u00eddeas<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Est\u00f3mago: eritema difuso, erosiones, nodularidad o mucosa normal.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Es\u00f3fago: lesiones subepiteliales y dismotilidad secundaria.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2192 Las biopsias son obligatorias incluso con mucosa endosc\u00f3picamente normal.<\/p>\n\n\n\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-large\"><a href=\"https:\/\/gastropedia.pub\/es\/?attachment_id=9384\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"817\" data-id=\"9384\" src=\"https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-1-Enteroscopia-de-paciente-com-amiloidose-jejuno-1024x817.jpg?v=1783130529\" alt=\"\" class=\"wp-image-9384\" srcset=\"https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-1-Enteroscopia-de-paciente-com-amiloidose-jejuno-1024x817.jpg?v=1783130529 1024w, https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-1-Enteroscopia-de-paciente-com-amiloidose-jejuno-300x239.jpg?v=1783130529 300w, https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-1-Enteroscopia-de-paciente-com-amiloidose-jejuno-768x613.jpg?v=1783130529 768w, https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-1-Enteroscopia-de-paciente-com-amiloidose-jejuno-585x467.jpg?v=1783130529 585w, https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-1-Enteroscopia-de-paciente-com-amiloidose-jejuno.jpg?v=1783130529 1053w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">Figura 1. Enteroscopia de paciente con amiloidosis \u2013 yeyuno<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/gastropedia.pub\/es\/?attachment_id=9383\"><img decoding=\"async\" width=\"1024\" height=\"889\" data-id=\"9383\" src=\"https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-2-Enteroscopia-de-paciente-com-amiloidose-segunda-porcao-duodenal-1024x889.jpg?v=1783130525\" alt=\"\" class=\"wp-image-9383\" srcset=\"https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-2-Enteroscopia-de-paciente-com-amiloidose-segunda-porcao-duodenal-1024x889.jpg?v=1783130525 1024w, https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-2-Enteroscopia-de-paciente-com-amiloidose-segunda-porcao-duodenal-300x260.jpg?v=1783130525 300w, https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-2-Enteroscopia-de-paciente-com-amiloidose-segunda-porcao-duodenal-768x666.jpg?v=1783130525 768w, https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-2-Enteroscopia-de-paciente-com-amiloidose-segunda-porcao-duodenal-1170x1015.jpg?v=1783130525 1170w, https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-2-Enteroscopia-de-paciente-com-amiloidose-segunda-porcao-duodenal-585x508.jpg?v=1783130525 585w, https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-2-Enteroscopia-de-paciente-com-amiloidose-segunda-porcao-duodenal.jpg?v=1783130525 1179w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">Figura 2. Enteroscopia de paciente con amiloidosis \u2013 segunda porci\u00f3n duodenal<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/gastropedia.pub\/es\/?attachment_id=9382\"><img decoding=\"async\" width=\"1024\" height=\"883\" data-id=\"9382\" src=\"https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-3-Enteroscopia-de-paciente-com-amiloidose-Ileo-1024x883.jpg?v=1783130520\" alt=\"\" class=\"wp-image-9382\" srcset=\"https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-3-Enteroscopia-de-paciente-com-amiloidose-Ileo-1024x883.jpg?v=1783130520 1024w, https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-3-Enteroscopia-de-paciente-com-amiloidose-Ileo-300x259.jpg?v=1783130520 300w, https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-3-Enteroscopia-de-paciente-com-amiloidose-Ileo-768x662.jpg?v=1783130520 768w, https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-3-Enteroscopia-de-paciente-com-amiloidose-Ileo-1170x1009.jpg?v=1783130520 1170w, https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-3-Enteroscopia-de-paciente-com-amiloidose-Ileo-585x505.jpg?v=1783130520 585w, https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-3-Enteroscopia-de-paciente-com-amiloidose-Ileo.jpg?v=1783130520 1179w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">Figura 3. Enteroscopia de paciente con amiloidosis \u2013 \u00edleon<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/gastropedia.pub\/es\/?attachment_id=9381\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"860\" data-id=\"9381\" src=\"https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-4-Enteroscopia-de-paciente-com-amiloidose-Jejuno-1024x860.jpg?v=1783130516\" alt=\"\" class=\"wp-image-9381\" srcset=\"https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-4-Enteroscopia-de-paciente-com-amiloidose-Jejuno-1024x860.jpg?v=1783130516 1024w, https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-4-Enteroscopia-de-paciente-com-amiloidose-Jejuno-300x252.jpg?v=1783130516 300w, https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-4-Enteroscopia-de-paciente-com-amiloidose-Jejuno-768x645.jpg?v=1783130516 768w, https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-4-Enteroscopia-de-paciente-com-amiloidose-Jejuno-1170x982.jpg?v=1783130516 1170w, https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-4-Enteroscopia-de-paciente-com-amiloidose-Jejuno-585x491.jpg?v=1783130516 585w, https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-4-Enteroscopia-de-paciente-com-amiloidose-Jejuno.jpg?v=1783130516 1179w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">Figura 4. Enteroscopia de paciente con amiloidosis \u2013 yeyuno<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/gastropedia.pub\/es\/?attachment_id=9380\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"870\" data-id=\"9380\" src=\"https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-5-Enteroscopia-de-paciente-com-amiloidose-Jejuno-1024x870.jpg?v=1783130512\" alt=\"\" class=\"wp-image-9380\" srcset=\"https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-5-Enteroscopia-de-paciente-com-amiloidose-Jejuno-1024x870.jpg?v=1783130512 1024w, https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-5-Enteroscopia-de-paciente-com-amiloidose-Jejuno-300x255.jpg?v=1783130512 300w, https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-5-Enteroscopia-de-paciente-com-amiloidose-Jejuno-768x653.jpg?v=1783130512 768w, https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-5-Enteroscopia-de-paciente-com-amiloidose-Jejuno-1170x994.jpg?v=1783130512 1170w, https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-5-Enteroscopia-de-paciente-com-amiloidose-Jejuno-585x497.jpg?v=1783130512 585w, https:\/\/gastropedia.pub\/es\/wp-content\/uploads\/2026\/07\/Figura-5-Enteroscopia-de-paciente-com-amiloidose-Jejuno.jpg?v=1783130512 1179w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">Figura 5. Enteroscopia de paciente con amiloidosis \u2013 yeyuno<\/figcaption><\/figure>\n<\/figure>\n\n\n\n<h2 id=\"h-estrategia-endoscopica-y-biopsia\" class=\"wp-block-heading\"><br><strong>Estrategia endosc\u00f3pica y biopsia<\/strong><\/h2>\n\n\n\n<h3 id=\"h-complementacion-diagnostica\" class=\"wp-block-heading\"><br><strong>Complementaci\u00f3n diagn\u00f3stica:<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Colonoscopia: mucosa fr\u00e1gil, edema, erosiones o examen normal. Las biopsias aleatorias de colon y recto pueden ser diagn\u00f3sticas incluso sin alteraciones macrosc\u00f3picas.<\/li>\n\n\n\n<li>C\u00e1psula endosc\u00f3pica: indicada en anemia obscura y diarrea sin diagn\u00f3stico. Identifica edema de vellosidades, erosiones e irregularidades mucosas en el intestino delgado.<\/li>\n\n\n\n<li>Enteroscopia: permite biopsias profundas del intestino delgado y hemostasia en casos seleccionados despu\u00e9s de hallazgos en la c\u00e1psula.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"h-estrategia-de-biopsia\" class=\"wp-block-heading\"><br><strong>Estrategia de biopsia<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">D\u00f3nde biopsiar:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Duodeno \u2014 prioridad, alto rendimiento<\/li>\n\n\n\n<li>Est\u00f3mago \u2014 fragmentos m\u00faltiples<\/li>\n\n\n\n<li>Colon y recto \u2014 casos seleccionados<\/li>\n\n\n\n<li>\u00c1reas alteradas + biopsias aleatorias<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Qu\u00e9 informar al pat\u00f3logo:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sospecha cl\u00ednica de amiloidosis<\/li>\n\n\n\n<li>Contexto cl\u00ednico: p\u00e9rdida de peso, diarrea, dismotilidad<\/li>\n\n\n\n<li>Solicitar expl\u00edcitamente Tinci\u00f3n de Rojo Congo<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u2192 El error m\u00e1s com\u00fan es no recopilar material suficiente o no solicitar las tinciones espec\u00edficas.<\/p>\n\n\n\n<h2 id=\"h-mensajes-clave\" class=\"wp-block-heading\"><br><strong>Mensajes clave:<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Mucosa casi normal no excluye amiloidosis. Las biopsias son obligatorias incluso sin alteraciones endosc\u00f3picas evidentes.<\/li>\n\n\n\n<li>Diarrea + p\u00e9rdida de peso + endoscopia poco exuberante = biopsiar. Esta tr\u00edada justifica la recopilaci\u00f3n dirigida con solicitud de Rojo Congo al pat\u00f3logo.<\/li>\n\n\n\n<li>El duodeno es el sitio de biopsia prioritario. Mayor rendimiento diagn\u00f3stico, incluso en alteraciones m\u00ednimas como granularidad fina.<\/li>\n\n\n\n<li>El sangrado obscuro puede tener origen en el intestino delgado infiltrado. La c\u00e1psula endosc\u00f3pica y la enteroscopia ampl\u00edan el alcance diagn\u00f3stico en estos casos.<\/li>\n\n\n\n<li>Es la endoscopia digestiva la que abre la puerta para el diagn\u00f3stico definitivo y para el manejo multidisciplinario m\u00e1s asertivo. La sospecha cl\u00ednica es esencial.<\/li>\n<\/ul>\n\n\n\n<h2 id=\"h-referencias\" class=\"wp-block-heading\"><br><strong>Referencias<\/strong><\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/18076735\" target=\"_blank\" rel=\"noreferrer noopener\">Gastrointestinal Manifestations of Amyloidosis.<\/a> The American Journal of Gastroenterology. 2008. Ebert EC, Nagar M.<\/li>\n\n\n\n<li><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/27362550\" target=\"_blank\" rel=\"noreferrer noopener\">Amyloidosis of the Gastrointestinal Tract and the Liver: Clinical Context, Diagnosis and Management.<\/a> European Journal of Gastroenterology &amp; Hepatology. 2016. Syed U, Ching Companioni RA, Alkhawam H, Walfish A<\/li>\n\n\n\n<li><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/35077702\" target=\"_blank\" rel=\"noreferrer noopener\">Evaluation and Management Strategies for GI Involvement With Amyloidosis.<\/a> The American Journal of Medicine. 2022. Fritz CDL, Blaney E.<\/li>\n<\/ol>\n\n\n\n<h2 id=\"h-como-citar-este-articulo\" class=\"wp-block-heading\"><strong>Como citar este articulo<\/strong><\/h2>\n\n\n\n<p class=\"has-very-light-gray-to-cyan-bluish-gray-gradient-background has-background wp-block-paragraph\">Bayma LR, Gamarra ACQ. Amiloidosis Intestinal: un diagn\u00f3stico diferencial importante, pero raramente recordado. Gastropedia 2026, Vol II. Disponible en:<a href=\"https:\/\/gastropedia.pub\/es\/?p=9373\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/gastropedia.pub\/es\/gastroenterologia\/amiloidosis-intestinal-un-diagnostico-diferencial-importante-pero-raramente-recordado\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Palabras clave: Amiloidosis intestinal \u00bfPor qu\u00e9 este tema es relevante? La amiloidosis intestinal es una causa infrecuente, pero cl\u00ednicamente relevante, de s\u00edntomas gastrointestinales cr\u00f3nicos, p\u00e9rdida de peso, dismotilidad y sangrado&hellip;<\/p>\n","protected":false},"author":5740,"featured_media":9384,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[18,22],"tags":[],"ano":[408],"tipo":[121],"volumen":[44],"class_list":["post-9373","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gastroenterologia","category-intestino","ano-408","tipo-temas-generales","volumen-volume-ii"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.2 (Yoast SEO v28.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Amiloidosis Intestinal: un diagn\u00f3stico diferencial importante, pero raramente recordado - Gastropedia<\/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:\/\/gastropedia.pub\/es\/gastroenterologia\/amiloidosis-intestinal-un-diagnostico-diferencial-importante-pero-raramente-recordado\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Amiloidosis Intestinal: un diagn\u00f3stico diferencial importante, pero raramente recordado\" \/>\n<meta property=\"og:description\" content=\"Palabras clave: Amiloidosis intestinal \u00bfPor qu\u00e9 este tema es relevante? 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