{"id":72418,"date":"2019-01-30T14:12:42","date_gmt":"2019-01-30T14:12:42","guid":{"rendered":"http:\/\/humanitasnet-new.local\/malattie\/myelome-multiple\/"},"modified":"2025-01-13T03:12:08","modified_gmt":"2025-01-13T03:12:08","slug":"myelome-multiple","status":"publish","type":"disease","link":"https:\/\/humanitas-net.humweb.webiz.team\/fr\/diseases\/myelome-multiple\/","title":{"rendered":"My\u00e9lome multiple"},"content":{"rendered":"<p>Le my\u00e9lome multiple est un cancer de la moelle osseuse o\u00f9 une quantit\u00e9 anormale de globules blancs, les leucocytes, prolif\u00e8rent de fa\u00e7on incontr\u00f4lable.<\/p>\n<p>Le my\u00e9lome multiple est l&#8217;un des types les plus courants de cancer de la moelle osseuse. Il attaque le plasma des cellules, les globules blancs qui produisent des anticorps dont la fonction est de prot\u00e9ger contre les infections. Les plasmocytes subissent un changement canc\u00e9reux, ils commencent \u00e0 prolif\u00e9rer de fa\u00e7on incontr\u00f4lable et entravent ainsi la production de globules rouges, de leucocytes et de thrombocytes sains. Ces cellules anormales et canc\u00e9reuses du plasma sont appel\u00e9es cellules my\u00e9lomateuses.<\/p>\n<p>Les cellules my\u00e9lomateuses produisent un nombre anormal d&#8217;anticorps et, d&#8217;autre part, la production de globules blancs sains qui nous prot\u00e8gent des infections est r\u00e9duite. Les cellules my\u00e9lomateuses d\u00e9truisent \u00e9galement le tissu osseux, ce qui entra\u00eene des douleurs dans les os, la rupture des os et la lib\u00e9ration de calcium suppl\u00e9mentaire dans la circulation sanguine.<\/p>\n<p>Le petit nombre de globules rouges r\u00e9duit la capacit\u00e9 du sang \u00e0 transporter l&#8217;oxyg\u00e8ne vers les autres organes, tandis qu&#8217;un nombre inf\u00e9rieur de thrombocytes peut entra\u00eener une h\u00e9morragie anormale.<\/p>\n<p>Le my\u00e9lome multiple est plus fr\u00e9quent chez les personnes de plus de 40 ans.<\/p>\n<h2 id=\"\"><\/h2>\n<h2 id=\"symptomes\">Sympt\u00f4mes<\/h2>\n<p>Les sympt\u00f4mes du my\u00e9lome multiple sont les suivants :<\/p>\n<ul>\n<li>\u00c9puisement<\/li>\n<li>P\u00e2leur<\/li>\n<li>Essoufflement<\/li>\n<li>Douleur dans les os, surtout dans le dos, lorsque les cellules my\u00e9lomateuses prolif\u00e8rent et s&#8217;accumulent dans la moelle osseuse et se propagent dans le squelette<\/li>\n<li>Cassure facile des os<\/li>\n<li>Infections r\u00e9currentes<\/li>\n<li>Ecchymoses faciles, m\u00eame sans blessure<\/li>\n<li>Soif, besoin fr\u00e9quent d&#8217;uriner et constipation en raison de l&#8217;augmentation du taux de calcium dans le sang<\/li>\n<\/ul>\n<p>Certains patients peuvent ne ressentir aucun sympt\u00f4me, surtout au stade pr\u00e9coce.<\/p>\n<p>&nbsp;<\/p>\n<h2 id=\"causes\">Causes<\/h2>\n<p>La cause du my\u00e9lome multiple n&#8217;est pas connue. On sait qu&#8217;elle commence avec un plasmocyte anormal dans la moelle osseuse. Une fois qu&#8217;elle commence, les cellules commencent \u00e0 prolif\u00e9rer rapidement et ne meurent pas, c&#8217;est-\u00e0-dire que ces cellules canc\u00e9reuses ne suivent pas le cycle de vie normal d&#8217;une cellule.<\/p>\n<p>&nbsp;<\/p>\n<h2 id=\"facteurs-de-risque\">Facteurs de risque<\/h2>\n<p>Les facteurs de risque du my\u00e9lome multiple connus \u00e0 ce jour sont les suivants :<\/p>\n<ul>\n<li>Age<\/li>\n<li>Ethnicit\u00e9 &#8211; les Noirs la d\u00e9veloppent plus que les Blancs<\/li>\n<li>Gammopathie monoclonale d&#8217;importance ind\u00e9termin\u00e9e &#8211; on a not\u00e9 que 1 % des personnes atteintes de cette affection d\u00e9veloppent un my\u00e9lome multiple.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2 id=\"complications\">Complications<\/h2>\n<p>Les complications du my\u00e9lome multiple peuvent \u00eatre les suivantes :<\/p>\n<ul>\n<li>Os raides qui sont plus faciles \u00e0 briser<\/li>\n<li>Infections r\u00e9currentes<\/li>\n<li>An\u00e9mie<\/li>\n<li>Insuffisance r\u00e9nale, due \u00e0 une augmentation du calcium dans le sang<\/li>\n<\/ul>\n","protected":false},"featured_media":0,"template":"","class_list":["post-72418","disease","type-disease","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>My\u00e9lome multiple - Humanitas.net<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"My\u00e9lome multiple - Humanitas.net\" \/>\n<meta property=\"og:description\" content=\"Le my\u00e9lome multiple est un cancer de la moelle osseuse o\u00f9 une quantit\u00e9 anormale de globules blancs, les leucocytes, prolif\u00e8rent de fa\u00e7on incontr\u00f4lable. 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