{"id":26217,"date":"2024-03-05T15:30:52","date_gmt":"2024-03-05T14:30:52","guid":{"rendered":"https:\/\/www.mylav.net\/?p=26217"},"modified":"2024-09-11T11:44:58","modified_gmt":"2024-09-11T09:44:58","slug":"le-calibre-de-laiguille-influence-t-il-les-resultats-dune-cytologie","status":"publish","type":"post","link":"https:\/\/www.mylav.net\/fr\/cytologie\/le-calibre-de-laiguille-influence-t-il-les-resultats-dune-cytologie\/","title":{"rendered":"Le calibre de l&rsquo;aiguille influence-t-il les r\u00e9sultats d&rsquo;une cytologie?"},"content":{"rendered":"<p>Lorsque nous devons effectuer une cytologie \u00e0 partir d&rsquo;une masse ou d&rsquo;un organe alt\u00e9r\u00e9, l&rsquo;utilisation de la technique d&rsquo;aspiration \u00e0 l&rsquo;aiguille fine (FNA) est sans aucun doute la m\u00e9thode de choix, \u00e9tant donn\u00e9 la simplicit\u00e9 d&rsquo;ex\u00e9cution, la rapidit\u00e9 de r\u00e9ponse, le faible co\u00fbt et les risques r\u00e9duits pour le patient associ\u00e9s \u00e0 la proc\u00e9dure. La question est souvent pos\u00e9e de savoir s&rsquo;il vaut mieux aspirer ou simplement laisser s\u2019\u00e9couler le contenu de l\u2019aiguille. De plus, nous avons l&#8217;embarras du choix en ce qui concerne le calibre de l&rsquo;aiguille \u00e0 utiliser.<\/p>\n<p>En g\u00e9n\u00e9ral, l&rsquo;aspiration permet de pr\u00e9lever plus de mat\u00e9riel, mais donne aussi plus de contamination par le sang. Le fait de laisser s\u2019\u00e9couler le contenu de l\u2019aiguille garantit souvent une bonne cellularit\u00e9, une faible contamination par le sang et une excellente conservation des cellules. Cette technique seule est donc \u00e0 privil\u00e9gier lorsque l&rsquo;on est confront\u00e9 \u00e0 des tissus qui donnent facilement du mat\u00e9riel cellulaire (par exemple, les ganglions lymphatiques, le foie, les n\u00e9oplasmes h\u00e9matopo\u00ef\u00e9tiques et \u00e9pith\u00e9liaux, etc.), tandis que l&rsquo;aspiration est plus adapt\u00e9e aux l\u00e9sions plus compactes. L&rsquo;exp\u00e9rience dans ces cas-l\u00e0 est tr\u00e8s utile! En outre, le fait de r\u00e9p\u00e9ter l&rsquo;\u00e9chantillonnage plusieurs fois avec diff\u00e9rentes m\u00e9thodes, lorsque cela est possible, augmente certainement la probabilit\u00e9 d&rsquo;obtenir des \u00e9chantillons utiles pour le cytologiste.<\/p>\n<p>Mais quelle est la meilleure aiguille \u00e0 utiliser? Existe-t-il un meilleur calibre? Et cela peut-il affecter le diagnostic?<\/p>\n<p>Une \u00e9tude publi\u00e9e r\u00e9cemment dans Veterinary Clinical Pathology (Arai et al, 48: 287-292; 2019), a tent\u00e9 de r\u00e9pondre \u00e0 ces questions, et les r\u00e9sultats \u00e9taient assez pr\u00e9visibles. Les r\u00e9sultats de l&rsquo;\u00e9chantillonnage sur des masses superficielles et profondes \u00e0 l&rsquo;aide d&rsquo;aiguilles 22G et 25G ont \u00e9t\u00e9 compar\u00e9s. Les aiguilles de 22G ont permis d&rsquo;obtenir un composant sanguin plus important. Les \u00e9chantillons pr\u00e9lev\u00e9s \u00e0 l&rsquo;aide d&rsquo;aiguilles plus fines ont entra\u00een\u00e9 des dommages cellulaires plus importants. En g\u00e9n\u00e9ral, il n&rsquo;y avait finalement pas de diff\u00e9rence significative en termes de CELLULARITE et de capacit\u00e9 \u00e0 \u00e9tablir un diagnostic final.<\/p>\n<p>Les \u00e9tudes chez l&rsquo;homme ont abouti \u00e0 des r\u00e9sultats similaires dans l&rsquo;ensemble. L&rsquo;un des principaux avantages de l&rsquo;utilisation d&rsquo;aiguilles tr\u00e8s fines est toutefois la diminution de la douleur ressentie par le patient lors du pr\u00e9l\u00e8vement, ce qui n&rsquo;est pas n\u00e9gligeable en m\u00e9decine humaine.<\/p>\n<p>En substance, si un pr\u00e9l\u00e8vement est effectu\u00e9 correctement, le diam\u00e8tre de l&rsquo;aiguille n&rsquo;a probablement que peu d&rsquo;effet sur la capacit\u00e9 finale \u00e0 \u00e9tablir un diagnostic correct.<\/p>\n<div class=\"riferimenti\">\n<strong>Walter Bertazzolo<\/strong>, EBVS European Specialist in Veterinary Clinical Pathology (Dipl. ECVCP); Directeur Scientifique de MYLAV.\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Lorsque nous devons effectuer une cytologie \u00e0 partir d&rsquo;une masse ou d&rsquo;un organe alt\u00e9r\u00e9, l&rsquo;utilisation [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[1118],"tags":[949],"class_list":["post-26217","post","type-post","status-publish","format-standard","hentry","category-cytologie","tag-cytologie"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Le calibre de l&#039;aiguille influence-t-il les r\u00e9sultats d&#039;une cytologie? - MyLav<\/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:\/\/www.mylav.net\/fr\/cytologie\/le-calibre-de-laiguille-influence-t-il-les-resultats-dune-cytologie\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Le calibre de l&#039;aiguille influence-t-il les r\u00e9sultats d&#039;une cytologie? 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