{"id":783,"date":"2018-08-20T14:47:00","date_gmt":"2018-08-20T12:47:00","guid":{"rendered":"https:\/\/histologie.univ-nantes.fr\/?p=783"},"modified":"2023-11-28T10:56:47","modified_gmt":"2023-11-28T09:56:47","slug":"les-dispositifs-lymphoides-mixtes","status":"publish","type":"post","link":"https:\/\/histologie.univ-nantes.fr\/?p=783","title":{"rendered":"Les dispositifs lympho\u00efdes mixtes"},"content":{"rendered":"<h2><span style=\"color: #800080;\"><b>L&#8217;appendice\u00a0<\/b><\/span><span style=\"color: #800080;\"><span style=\"caret-color: #800080;\">il\u00e9on-caecal<\/span><\/span><\/h2>\n<h2><b><span style=\"color: #cc3300;\">Coupe transversale d&#8217;appendice humain<\/span><\/b><b><span style=\"color: #cc3300;\">, color\u00e9e par la m\u00e9thode de Van Gieson avec passage au vert lumi\u00e8re<\/span><\/b><\/h2>\n<p>L&#8217;appendice est transform\u00e9 en organe lympho\u00efde, mais les quatre tuniques du tube digestif sont d\u00e9crites.<\/p>\n<div class=\"su-row\"><div class=\"su-column su-column-size-1-2\"><div class=\"su-column-inner su-u-clearfix su-u-trim\">\n<p><a href=\"https:\/\/histologie.univ-nantes.fr\/wp-content\/uploads\/2018\/08\/LYM-ileo-01.jpg\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-725\" src=\"https:\/\/histologie.univ-nantes.fr\/wp-content\/uploads\/2018\/08\/LYM-ileo-01.jpg\" alt=\"\" width=\"735\" height=\"750\" srcset=\"https:\/\/histologie.univ-nantes.fr\/wp-content\/uploads\/2018\/08\/LYM-ileo-01.jpg 735w, https:\/\/histologie.univ-nantes.fr\/wp-content\/uploads\/2018\/08\/LYM-ileo-01-294x300.jpg 294w\" sizes=\"(max-width: 735px) 100vw, 735px\" \/><\/a><\/p>\n<\/div><\/div>\n<div class=\"su-column su-column-size-1-2\"><div class=\"su-column-inner su-u-clearfix su-u-trim\">\n<p><strong>Rep\u00e9rer au faible grossissement\u00a0<\/strong>(Objectif X4 et X10) de dedans en dehors, les quatre tuniques.<\/p>\n<ul>\n<li><u>La muqueuse<\/u>\u00a0avec\u00a0:<\/li>\n<\/ul>\n<p style=\"padding-left: 30px;\">. des glandes de Lieberk\u00fchn droites plus rares et plus courtes que dans le gros intestin,<\/p>\n<p style=\"padding-left: 30px;\">. une couche lympho\u00efde form\u00e9e de gros follicules clos \u00e0 centre germinatif clair, r\u00e9unis souvent les uns aux autres pour former une sorte de plaque de Peyer annulaire.<\/p>\n<p><em><u>N.B<\/u><\/em><em>. : Les follicules effondrent la muscularis mucos\u00e6 qui ne persiste que par place. Ils envahissent la sous muqueuse.<\/em><\/p>\n<ul>\n<li><u>L<\/u><u>a sous-muqueuse<\/u>\u00a0de structure classique mais tr\u00e8s infiltr\u00e9e de lymphocyte<\/li>\n<li><u>L<\/u><u>a musculeuse<\/u>\u00a0mince.<\/li>\n<li><u>La s\u00e9reuse<\/u>\u00a0\u00e9paisse, bien vascularis\u00e9e.<\/li>\n<\/ul>\n<\/div><\/div><\/div>\n<div class=\"su-row\"><div class=\"su-column su-column-size-1-2\"><div class=\"su-column-inner su-u-clearfix su-u-trim\">\n<p><a href=\"https:\/\/histologie.univ-nantes.fr\/wp-content\/uploads\/2018\/08\/LYM-ileo-02.jpg\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-726\" src=\"https:\/\/histologie.univ-nantes.fr\/wp-content\/uploads\/2018\/08\/LYM-ileo-02.jpg\" alt=\"\" width=\"809\" height=\"750\" srcset=\"https:\/\/histologie.univ-nantes.fr\/wp-content\/uploads\/2018\/08\/LYM-ileo-02.jpg 809w, https:\/\/histologie.univ-nantes.fr\/wp-content\/uploads\/2018\/08\/LYM-ileo-02-300x278.jpg 300w, https:\/\/histologie.univ-nantes.fr\/wp-content\/uploads\/2018\/08\/LYM-ileo-02-768x712.jpg 768w\" sizes=\"(max-width: 809px) 100vw, 809px\" \/><\/a><\/p>\n<\/div><\/div>\n<div class=\"su-column su-column-size-1-2\"><div class=\"su-column-inner su-u-clearfix su-u-trim\">\n<p><strong>Observer au fort grossissement\u00a0<\/strong>(Objectif X40)\u00a0<strong><u>la muqueuse avec\u00a0<\/u><\/strong>:<\/p>\n<ul>\n<li><u>Un \u00e9pith\u00e9lium simple<\/u>\u00a0avec des ent\u00e9rocytes \u00e0 plateau stri\u00e9 et des cellules caliciformes color\u00e9es en vert. L\u2019infiltrat lympho\u00efde intra-\u00e9pith\u00e9lial est assez important.\n<ul>\n<li><u>Des glandes de Lieberk\u00fchn<\/u>\u00a0courtes avec des ent\u00e9rocytes et des cellules caliciformes color\u00e9es par le vert lumi\u00e8re.<\/li>\n<\/ul>\n<\/li>\n<li>Un chorion tr\u00e8s infiltr\u00e9 de lymphocy.<\/li>\n<li><u>Une couche lympho\u00efde\u00a0<\/u>comprenant de gros follicules clos \u00e0 centre germinatif clair.<\/li>\n<\/ul>\n<\/div><\/div><\/div>\n<hr \/>\n<h2><b><span style=\"color: #cc3300;\">Coupe d&#8217;appendice il\u00e9o-caecal de lapin<\/span><\/b><b><span style=\"color: #cc3300;\">, color\u00e9e par la m\u00e9thode de Van Gieson<\/span><\/b><\/h2>\n<h4><a href=\"https:\/\/histologie.univ-nantes.fr\/?p=1944\" target=\"_blank\" rel=\"noopener\"><i><img decoding=\"async\" loading=\"lazy\" class=\"alignnone wp-image-2023\" src=\"https:\/\/histologie.univ-nantes.fr\/wp-content\/uploads\/2023\/11\/microscope-silhouette-clipart-e1701160211973-232x300.jpg\" alt=\"\" width=\"33\" height=\"43\" srcset=\"https:\/\/histologie.univ-nantes.fr\/wp-content\/uploads\/2023\/11\/microscope-silhouette-clipart-e1701160211973-232x300.jpg 232w, https:\/\/histologie.univ-nantes.fr\/wp-content\/uploads\/2023\/11\/microscope-silhouette-clipart-e1701160211973-116x150.jpg 116w, https:\/\/histologie.univ-nantes.fr\/wp-content\/uploads\/2023\/11\/microscope-silhouette-clipart-e1701160211973.jpg 288w\" sizes=\"(max-width: 33px) 100vw, 33px\" \/> &gt;&gt;&gt;&gt;&gt; Lame virtuelle d&#8217;appendice il\u00e9o-caecal<\/i><\/a><\/h4>\n<p>L&#8217;appendice il\u00e9o-caecal de lapin permet de visualiser les th\u00e8ques intra-\u00e9pith\u00e9liales et de comprendre le r\u00f4le des follicules lympho\u00efdes dans le tube digestif.<\/p>\n<div class=\"su-row\"><div class=\"su-column su-column-size-1-2\"><div class=\"su-column-inner su-u-clearfix su-u-trim\">\n<p><a href=\"https:\/\/histologie.univ-nantes.fr\/wp-content\/uploads\/2018\/08\/LYM-ileo-03.jpg\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-727\" src=\"https:\/\/histologie.univ-nantes.fr\/wp-content\/uploads\/2018\/08\/LYM-ileo-03.jpg\" alt=\"\" width=\"1000\" height=\"723\" srcset=\"https:\/\/histologie.univ-nantes.fr\/wp-content\/uploads\/2018\/08\/LYM-ileo-03.jpg 1000w, https:\/\/histologie.univ-nantes.fr\/wp-content\/uploads\/2018\/08\/LYM-ileo-03-300x217.jpg 300w, https:\/\/histologie.univ-nantes.fr\/wp-content\/uploads\/2018\/08\/LYM-ileo-03-768x555.jpg 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/a><\/p>\n<\/div><\/div>\n<div class=\"su-column su-column-size-1-2\"><div class=\"su-column-inner su-u-clearfix su-u-trim\">\n<p><strong>Remarquer au faible grossissement\u00a0<\/strong>(Objectif X2,5) que\u00a0:<\/p>\n<ul>\n<li>les follicules clos bombent dans la lumi\u00e8re et soul\u00e8vent l&#8217;\u00e9pith\u00e9lium superficiel.<\/li>\n<\/ul>\n<\/div><\/div><\/div>\n<p><strong>Remarquer au moyen grossissement\u00a0<\/strong>(ObjectifX10) qu\u2019entre les follicules, l&#8217;\u00e9pith\u00e9lium d\u00e9limite un repli en forme de champignon plus ou moins triangulaire pouvant s&#8217;anastomoser avec un repli voisin.<\/p>\n<p><strong>Remarquer au fort grossissement\u00a0<\/strong>(Objectif X40) que<\/p>\n<div class=\"h5p-iframe-wrapper\"><iframe id=\"h5p-iframe-16\" class=\"h5p-iframe\" data-content-id=\"16\" style=\"height:1px\" src=\"about:blank\" frameBorder=\"0\" scrolling=\"no\" title=\"Lymphoides Dispositifs P36\"><\/iframe><\/div>\n<ul>\n<li>l&#8217;\u00e9pith\u00e9lium tapissant le versant des follicules clos pr\u00e9sente\u00a0:\n<ul>\n<li>des zones infiltr\u00e9es de lymphocytes.<\/li>\n<li>des th\u00e8ques intra\u00e9pith\u00e9liales (cellules M) renfermant :<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p style=\"padding-left: 60px;\">. des lymphocytes dont seul, le noyau est visible. Celui-ci est arrondi, sombre, de taille variable, mais plus petit que celui des ent\u00e9rocytes.<\/p>\n<p style=\"padding-left: 60px;\">. des macrophages dont le noyau est gros et clair.<\/p>\n<ul>\n<li>l&#8217;\u00e9pith\u00e9lium des replis triangulaires est constitu\u00e9 de cellules caliciformes et d&#8217;ent\u00e9rocytes. Il est fortement infiltr\u00e9 de lymphocytes.<\/li>\n<li>l&#8217;int\u00e9rieur des replis est occup\u00e9 par des glandes de Lieberk\u00fchn comprenant presque exclusivement des ent\u00e9rocytes, du tissu conjonctif et des vaisseaux.<\/li>\n<\/ul>\n<a href=\"https:\/\/histologie.univ-nantes.fr\/category\/les-tissus-et-organes-lymphoides\/\" class=\"su-button su-button-style-default\" style=\"color:#FFFFFF;background-color:#9a0620;border-color:#7c051a;border-radius:5px;-moz-border-radius:5px;-webkit-border-radius:5px\" target=\"_self\"><span style=\"color:#FFFFFF;padding:0px 16px;font-size:13px;line-height:26px;border-color:#b95163;border-radius:5px;-moz-border-radius:5px;-webkit-border-radius:5px;text-shadow:none;-moz-text-shadow:none;-webkit-text-shadow:none\"> &lt;&lt; LES TISSUS ET ORGANES LYMPHOIDES<\/span><\/a>\n","protected":false},"excerpt":{"rendered":"<p>L&#8217;appendice\u00a0il\u00e9on-caecal<br \/>\nCoupe transversale d&#8217;appendice humain, color\u00e9e par la m\u00e9thode de Van-Gieson avec passage au vert lumi\u00e8re<br \/>\nCoupe d&#8217;appendice il\u00e9o-caecal de lapin, color\u00e9e par la m\u00e9thode de Van-Gieson&hellip; <a class=\"kt-excerpt-readmore more-link\" href=\"https:\/\/histologie.univ-nantes.fr\/?p=783\">Lire la suite&#8230;<\/a><\/p>\n","protected":false},"author":2,"featured_media":727,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"image","meta":[],"categories":[45],"tags":[],"_links":{"self":[{"href":"https:\/\/histologie.univ-nantes.fr\/index.php?rest_route=\/wp\/v2\/posts\/783"}],"collection":[{"href":"https:\/\/histologie.univ-nantes.fr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/histologie.univ-nantes.fr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/histologie.univ-nantes.fr\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/histologie.univ-nantes.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=783"}],"version-history":[{"count":16,"href":"https:\/\/histologie.univ-nantes.fr\/index.php?rest_route=\/wp\/v2\/posts\/783\/revisions"}],"predecessor-version":[{"id":2054,"href":"https:\/\/histologie.univ-nantes.fr\/index.php?rest_route=\/wp\/v2\/posts\/783\/revisions\/2054"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/histologie.univ-nantes.fr\/index.php?rest_route=\/wp\/v2\/media\/727"}],"wp:attachment":[{"href":"https:\/\/histologie.univ-nantes.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=783"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/histologie.univ-nantes.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=783"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/histologie.univ-nantes.fr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=783"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}