{"id":1821,"date":"2025-11-13T14:45:56","date_gmt":"2025-11-13T11:45:56","guid":{"rendered":"https:\/\/wiki.voka.io\/glossary\/tissu-lymphoide\/"},"modified":"2025-11-13T14:45:48","modified_gmt":"2025-11-13T11:45:48","slug":"tissu-lymphoide","status":"publish","type":"glossary_item","link":"https:\/\/wiki.voka.io\/fr\/glossaire\/tissu-lymphoide\/","title":{"rendered":"Tissu lympho\u00efde"},"content":{"rendered":"\n<p>Le tissu lympho\u00efde est un type de tissu conjonctif qui contient un grand nombre de lymphocytes et d&rsquo;autres cellules immunitaires. Il constitue la base structurelle et fonctionnelle des organes du syst\u00e8me immunitaire.<\/p>\n\n<p>La fonction principale de ce tissu consiste \u00e0 reconna\u00eetre et \u00e0 d\u00e9truire les agents \u00e9trangers (bact\u00e9ries, virus, cellules anormales) et \u00e0 cr\u00e9er une m\u00e9moire immunologique. Il est strat\u00e9giquement r\u00e9parti dans l&rsquo;ensemble du corps, surtout dans les zones susceptibles d&rsquo;\u00eatre envahies par des agents pathog\u00e8nes.<\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-&#x43A;&#x43B;&#x430;&#x441;&#x441;&#x438;&#x444;&#x438;&#x43A;&#x430;&#x446;&#x438;&#x44F;-&#x438;-&#x444;&#x443;&#x43D;&#x43A;&#x446;&#x438;&#x438;\"><strong>Classification et fonctions<\/strong><\/h2>\n\n<p>Tous les organes lympho\u00efdes sont divis\u00e9s en deux groupes\u00a0:<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Organes centraux (primaires).<\/strong> Lieux o\u00f9 les lymphocytes se forment et \u00ab\u00a0s&rsquo;entra\u00eenent\u00a0\u00bb. Il s&rsquo;agit de la moelle osseuse rouge et du thymus.<\/li>\n\n\n\n<li><strong>Organes p\u00e9riph\u00e9riques (secondaires).<\/strong> Lieux o\u00f9 les lymphocytes matures rencontrent les antig\u00e8nes et d\u00e9clenchent une r\u00e9ponse immunitaire. Il s&rsquo;agit des n\u0153uds lymphatiques, de la rate, des tonsilles et du tissu lympho\u00efde des muqueuses (MALT).<\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\" id=\"h-&#x43A;&#x43B;&#x438;&#x43D;&#x438;&#x447;&#x435;&#x441;&#x43A;&#x43E;&#x435;-&#x437;&#x43D;&#x430;&#x447;&#x435;&#x43D;&#x438;&#x435;\"><strong>Importance clinique<\/strong><\/h2>\n\n<p>L&rsquo;\u00e9tat du tissu lympho\u00efde refl\u00e8te directement l&rsquo;activit\u00e9 du syst\u00e8me immunitaire. Sa croissance r\u00e9active (hyperplasie), par exemple l&rsquo;augmentation des n\u0153uds lymphatiques, est un signe typique d&rsquo;un processus infectieux ou inflammatoire.<\/p>\n\n<p>Les tumeurs malignes provenant du tissu lympho\u00efde sont appel\u00e9es lymphomes. Leur diagnostic et leur classification reposent sur l&rsquo;examen histologique d&rsquo;une biopsie d&rsquo;un organe lympho\u00efde.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le tissu lympho\u00efde est un type de tissu conjonctif qui contient un grand nombre de lymphocytes et d&rsquo;autres cellules immunitaires. Il constitue la base structurelle et fonctionnelle des organes du syst\u00e8me immunitaire.<\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-1821","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 v26.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Tissu lympho\u00efde : d\u00e9finition m\u00e9dicale et description | Voka Wiki<\/title>\n<meta name=\"description\" content=\"Le tissu lympho\u00efde est un type de tissu conjonctif qui contient un grand nombre de lymphocytes et d&#039;autres cellules immunitaires. 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