{"id":7471,"date":"2026-07-23T14:03:08","date_gmt":"2026-07-23T11:03:08","guid":{"rendered":"https:\/\/wiki.voka.io\/glossary\/linfadenopatia\/"},"modified":"2026-07-23T14:03:06","modified_gmt":"2026-07-23T11:03:06","slug":"linfadenopatia","status":"publish","type":"glossary_item","link":"https:\/\/wiki.voka.io\/pt\/glossario\/linfadenopatia\/","title":{"rendered":"Linfadenopatia"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Linfadenopatia (do latim <em>lympha<\/em> \u2014 umidade, do grego <em>aden<\/em> \u2014 gl\u00e2ndula e <em>pathos<\/em> \u2014 doen\u00e7a) \u00e9 um estado patol\u00f3gico caracterizado pelo aumento do tamanho de um ou mais linfonodos.<\/p>\n\n<p class=\"wp-block-paragraph\">\u00c9 um dos s\u00edndromes cl\u00ednicos mais frequentes em doen\u00e7as infecciosas.<\/p>\n\n<h2 id=\"h-&#x44D;&#x442;&#x438;&#x43E;&#x43B;&#x43E;&#x433;&#x438;&#x44F;-&#x438;-&#x43F;&#x430;&#x442;&#x43E;&#x444;&#x438;&#x437;&#x438;&#x43E;&#x43B;&#x43E;&#x433;&#x438;&#x44F;\" class=\"wp-block-heading\">Etiologia e fisiopatologia<\/h2>\n\n<p class=\"wp-block-paragraph\">Os linfonodos s\u00e3o \u00f3rg\u00e3os perif\u00e9ricos do sistema imunol\u00f3gico, atuando como filtros biol\u00f3gicos. Eles removem diferentes c\u00e9lulas patol\u00f3gicas da linfa com part\u00edculas estranhas. Normalmente, os linfonodos est\u00e3o preenchidos com linf\u00f3citos T e B &#8220;dormindo&#8221;.<\/p>\n\n<p class=\"wp-block-paragraph\">Quando um v\u00edrus ou bact\u00e9ria entra no tecido, eles s\u00e3o interceptados por macr\u00f3fagos vigilantes e o fluido tecidual com ant\u00edgenos estranhos flui pelos vasos linf\u00e1ticos para o linfonodo mais pr\u00f3ximo. L\u00e1, os ant\u00edgenos s\u00e3o apresentados aos linf\u00f3citos.<\/p>\n\n<p class=\"wp-block-paragraph\">Inicia-se um processo de expans\u00e3o clonal intensa: as c\u00e9lulas imunol\u00f3gicas come\u00e7am a se dividir rapidamente e incessantemente para criar um ex\u00e9rcito para combater o pat\u00f3geno. O linfonodo aumenta de tamanho devido \u00e0 entrada ativa de sangue e ao edema inflamat\u00f3rio local.<\/p>\n\n<p class=\"wp-block-paragraph\">Linfadenite \u00e9 linfadenopatia acompanhada por sinais de inflama\u00e7\u00e3o (por exemplo, vermelhid\u00e3o da pele (eritema), dor no linfonodo).<\/p>\n\n<h2 id=\"h-&#x43A;&#x43B;&#x438;&#x43D;&#x438;&#x447;&#x435;&#x441;&#x43A;&#x43E;&#x435;-&#x437;&#x43D;&#x430;&#x447;&#x435;&#x43D;&#x438;&#x435;\" class=\"wp-block-heading\">Import\u00e2ncia cl\u00ednica<\/h2>\n\n<p class=\"wp-block-paragraph\">A linfadenopatia \u00e9 classificada em local (regional) e generalizada:<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>local (regional)<\/strong> \u2014 o aumento regional dos linfonodos indica a presen\u00e7a de uma infec\u00e7\u00e3o local (por exemplo, os linfonodos submandibulares s\u00e3o um sinal cl\u00e1ssico de faringite estreptoc\u00f3cica ou infec\u00e7\u00e3o viral da orofaringe);<\/li>\n\n\n\n<li><strong>generalizada<\/strong> \u2014 linfonodos est\u00e3o aumentados em duas ou mais zonas independentes do corpo (no pesco\u00e7o, axilas, virilha), indicando uma infec\u00e7\u00e3o sist\u00eamica.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">A linfadenopatia generalizada \u00e9 um sintoma patognom\u00f4nico (espec\u00edfico) de doen\u00e7as como infec\u00e7\u00e3o por HIV, infec\u00e7\u00e3o por citomegalov\u00edrus e infec\u00e7\u00e3o pelo v\u00edrus Epstein-Barr (mononucleose infecciosa).<\/p>\n\n<p class=\"wp-block-paragraph\">Na aus\u00eancia de sinais claros de infec\u00e7\u00e3o, a linfadenopatia persistente, indolor e firme requer uma bi\u00f3psia para excluir doen\u00e7as onco-hematol\u00f3gicas (linfomas).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Linfadenopatia (do latim <em>lympha<\/em> \u2014 umidade, do grego <em>aden<\/em> \u2014 gl\u00e2ndula e <em>pathos<\/em> \u2014 doen\u00e7a) \u00e9 um estado patol\u00f3gico caracterizado pelo aumento do tamanho de um ou mais linfonodos.<\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-7471","glossary_item","type-glossary_item","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.0 (Yoast SEO v27.8) - 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