{"id":31668,"date":"2025-05-28T15:57:59","date_gmt":"2025-05-28T13:57:59","guid":{"rendered":"https:\/\/www.mylav.net\/?p=31668"},"modified":"2026-01-21T10:32:22","modified_gmt":"2026-01-21T09:32:22","slug":"a-la-decouverte-des-alterations-des-hematies-et-de-leur-signification-clinique","status":"publish","type":"post","link":"https:\/\/www.mylav.net\/fr\/hematologie\/a-la-decouverte-des-alterations-des-hematies-et-de-leur-signification-clinique\/","title":{"rendered":"\u00c0 LA D\u00c9COUVERTE DES ALT\u00c9RATIONS DES H\u00c9MATIES ET DE LEUR SIGNIFICATION CLINIQUE"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">L&rsquo;examen du frottis sanguin permet d&rsquo;observer diff\u00e9rentes alt\u00e9rations morphologiques des h\u00e9maties, que ce soit dans le cadre de pathologies plus ou moins significatives, ou en raison d&rsquo;art\u00e9facts techniques.<\/span><\/p>\n<figure id=\"attachment_31669\" aria-describedby=\"caption-attachment-31669\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-31669 size-medium_large\" src=\"https:\/\/www.mylav.net\/wp-content\/uploads\/2025\/05\/01-fra-768x452.jpg\" alt=\"\" width=\"768\" height=\"452\" \/><figcaption id=\"caption-attachment-31669\" class=\"wp-caption-text\">Figure 1. Poikilocytose marqu\u00e9e sur un frottis sanguin (pr\u00e9sence d\u2019h\u00e9maties de formes vari\u00e9es).<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">Examinons en d\u00e9tail les diff\u00e9rentes anomalies observables et leur importance clinique dans un h\u00e9mogramme :<\/span><\/p>\n<p><b>ANISOCYTOSE<\/b><span style=\"font-weight: 400;\"> : pr\u00e9sence d&rsquo;h\u00e9maties de tailles diff\u00e9rentes. Cette anomalie est traduite par une augmentation du RDW en lecture automatis\u00e9e.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Elle est rencontr\u00e9e notamment en cas de :<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">An\u00e9mie r\u00e9g\u00e9n\u00e9rative (h\u00e9molyse ou h\u00e9morragie) : les r\u00e9ticulocytes, plus grands que les h\u00e9maties matures, provoquent une h\u00e9t\u00e9rog\u00e9n\u00e9it\u00e9 de taille.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Dys\u00e9rythropo\u00ef\u00e8se : des anomalies de production m\u00e9dullaire (infection FeLV, maladies immunom\u00e9di\u00e9es, carences) entra\u00eenent des tailles variables.<br \/>\n<\/span><\/li>\n<\/ul>\n<figure id=\"attachment_31676\" aria-describedby=\"caption-attachment-31676\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-31676 size-medium_large\" src=\"https:\/\/www.mylav.net\/wp-content\/uploads\/2025\/05\/02-fra-768x501.jpg\" alt=\"\" width=\"768\" height=\"501\" \/><figcaption id=\"caption-attachment-31676\" class=\"wp-caption-text\">Figure 2. Frottis sanguin, chien. Dys\u00e9rythropo\u00ef\u00e8se : anisocytose marqu\u00e9e.<\/figcaption><\/figure>\n<p><b>POIKILOCYTOSE<\/b><span style=\"font-weight: 400;\"> : pr\u00e9sence d&rsquo;h\u00e9maties de <\/span><span style=\"font-weight: 400;\">formes diverses.<\/span><span style=\"font-weight: 400;\"> D\u00e9tails \u00e0 venir ci-dessous.<\/span><\/p>\n<p><b>POLYCHROMASIE<\/b><span style=\"font-weight: 400;\"> : pr\u00e9sence de <\/span><span style=\"font-weight: 400;\">polychromatophiles<\/span><span style=\"font-weight: 400;\"> (r\u00e9ticulocytes) dans le cadre d&rsquo;une an\u00e9mie r\u00e9g\u00e9n\u00e9rative.<\/span><\/p>\n<p>&nbsp;<\/p>\n<figure id=\"attachment_31683\" aria-describedby=\"caption-attachment-31683\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-31683 size-medium_large\" src=\"https:\/\/www.mylav.net\/wp-content\/uploads\/2025\/05\/03-fra-768x493.jpg\" alt=\"\" width=\"768\" height=\"493\" \/><figcaption id=\"caption-attachment-31683\" class=\"wp-caption-text\">Figure 3. Frottis sanguin, chien. An\u00e9mie h\u00e9molytique m\u00e9diation immune : pr\u00e9sence de polychromatophiles (fl\u00e8ches rouges), indicatifs d\u2019une r\u00e9g\u00e9n\u00e9ration.<\/figcaption><\/figure>\n<p><b>HYPOCHROMASIE<\/b><span style=\"font-weight: 400;\"> : p\u00e2leur centrale accentu\u00e9e des h\u00e9maties leur donnant un aspect \u00ab plus p\u00e2le \u00bb, due \u00e0 une teneur r\u00e9duite en h\u00e9moglobine. Ces h\u00e9maties sont appel\u00e9s <\/span><b>leptocytes<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Correspond \u00e0 une diminution de <\/span><b>TCMH<\/b><span style=\"font-weight: 400;\"> et <\/span><b>CCMH<\/b><span style=\"font-weight: 400;\">. Observ\u00e9 notamment en cas de :<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">An\u00e9mie r\u00e9g\u00e9n\u00e9rative (h\u00e9molyse vs h\u00e9morragie) : la pr\u00e9sence de r\u00e9ticulocytes, plus p\u00e2les (avec une teneur en h\u00e9moglobine plus faible) que les h\u00e9maties matures, entra\u00eene cette modification.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">An\u00e9mie par carence en fer (par exemple en cas de pertes sanguines chroniques externes), g\u00e9n\u00e9ralement associ\u00e9e \u00e0 une po\u00efkilocytose marqu\u00e9e.<\/span><\/li>\n<\/ul>\n<figure id=\"attachment_31690\" aria-describedby=\"caption-attachment-31690\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-31690 size-medium_large\" src=\"https:\/\/www.mylav.net\/wp-content\/uploads\/2025\/05\/04-fra-768x434.jpg\" alt=\"\" width=\"768\" height=\"434\" \/><figcaption id=\"caption-attachment-31690\" class=\"wp-caption-text\">Figure 4. Frottis sanguin, chien. An\u00e9mie par carence en fer (infestation massive par ascarides) : hypochromasie et poikilocytose marqu\u00e9e.<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">Les h\u00e9maties peuvent \u00e9galement pr\u00e9senter <\/span><b>diff\u00e9rentes dispositions<\/b><span style=\"font-weight: 400;\"> sur la lame, \u00e0 savoir :<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>AGGLUTINATION<\/b><span style=\"font-weight: 400;\"> : les h\u00e9maties se \u00ab regroupent \u00bb entre eux par des liaisons anticorps, typiquement observ\u00e9es lors d\u2019une an\u00e9mie h\u00e9molytique \u00e0 m\u00e9diation immune, et plus rarement comme r\u00e9action in vitro au contact de l\u2019EDTA (quelques cas rares rapport\u00e9s chez le chat \u2013 Schaefer DMW et al., 2019).<\/span><\/li>\n<\/ul>\n<p><b>ROULEAUX<\/b><span style=\"font-weight: 400;\"> : disposition des h\u00e9maties en \u00ab pile de pi\u00e8ces \u00bb, g\u00e9n\u00e9ralement observ\u00e9e en cas d\u2019hyperprotid\u00e9mie\/hyperglobulin\u00e9mie ou d\u2019augmentation des prot\u00e9ines de phase aigu\u00eb lors de processus inflammatoires.<\/span><\/p>\n<figure id=\"attachment_31697\" aria-describedby=\"caption-attachment-31697\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-31697 size-medium_large\" src=\"https:\/\/www.mylav.net\/wp-content\/uploads\/2025\/05\/05-fra-768x269.jpg\" alt=\"\" width=\"768\" height=\"269\" \/><figcaption id=\"caption-attachment-31697\" class=\"wp-caption-text\">Figure 5. Photo de gauche : Frottis sanguin, chien. An\u00e9mie h\u00e9molytique \u00e0 m\u00e9diation immune : pr\u00e9sence d\u2019agglutination. Photo de droite : Frottis sanguin, chat. Hyperprotid\u00e9mie : pr\u00e9sence de rouleaux.<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">Les alt\u00e9rations morphologiques de la lign\u00e9e \u00e9rythro\u00efde peuvent \u00eatre caus\u00e9es par diff\u00e9rents m\u00e9canismes pathologiques tels que des processus immunom\u00e9di\u00e9s, des traumatismes m\u00e9caniques entra\u00eenant une fragmentation, des troubles du m\u00e9tabolisme lipidique, des carences nutritionnelles, un stress oxydatif, etc.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ci-dessous, nous d\u00e9taillons les <\/span><b>principales alt\u00e9rations des h\u00e9maties<\/b><span style=\"font-weight: 400;\"> susceptibles de nous aider \u00e0 identifier un \u00e9tat pathologique.<\/span><\/p>\n<p><b>ACANTHOCYTES<\/b><\/p>\n<p><span style=\"font-weight: 400;\">H\u00e9maties pr\u00e9sentant des protrusions irr\u00e9guli\u00e8res et \u00e9mouss\u00e9es, observ\u00e9s dans diverses conditions pathologiques (Warry E et al., 2013), et fr\u00e9quemment associ\u00e9s \u00e0 d\u2019autres alt\u00e9rations.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">En r\u00e9sum\u00e9, ils peuvent \u00eatre mis en \u00e9vidence dans les situations suivantes :<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Alt\u00e9ration du rapport cholest\u00e9rol\/phospholipides de la membrane \u00e9rythrocytaire (exc\u00e8s de cholest\u00e9rol). On peut les observer en cas de maladies h\u00e9patiques s\u00e9v\u00e8res et de troubles m\u00e9taboliques entra\u00eenant une hypercholest\u00e9rol\u00e9mie et une diminution du cholest\u00e9rol HDL (ex. syndrome n\u00e9phrotique, hypothyro\u00efdie).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Fragmentation due \u00e0 un traumatisme m\u00e9canique, comme lors de n\u00e9oplasies (ex. h\u00e9mangiosarcome), de coagulation intravasculaire diss\u00e9min\u00e9e (CIVD), de glom\u00e9rulon\u00e9phrite, ou encore en cas de fragilit\u00e9 accrue des h\u00e9maties (ex. an\u00e9mie ferriprive). Des schistocytes et k\u00e9ratocytes peuvent \u00eatre observ\u00e9s simultan\u00e9ment (voir plus loin).<\/span><\/li>\n<\/ul>\n<figure id=\"attachment_31704\" aria-describedby=\"caption-attachment-31704\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-31704 size-medium_large\" src=\"https:\/\/www.mylav.net\/wp-content\/uploads\/2025\/05\/06-fra-768x536.png\" alt=\"\" width=\"768\" height=\"536\" \/><figcaption id=\"caption-attachment-31704\" class=\"wp-caption-text\">Figure 6. Frottis sanguin, chien. H\u00e9mangiosarcome spl\u00e9nique : acanthocytes (fl\u00e8ches rouges)<\/figcaption><\/figure>\n<p><b>SPH\u00c9ROCYTES<\/b><\/p>\n<p><span style=\"font-weight: 400;\">H\u00e9maties de forme sph\u00e9rique, de petite taille, d\u00e9pourvus de p\u00e2leur centrale. Ils sont facilement identifiables chez le chien, alors que chez le chat leur reconnaissance est plus difficile, car les h\u00e9maties f\u00e9lines sont physiologiquement d\u00e9pourvues de p\u00e2leur centrale et pr\u00e9sentent naturellement un aspect \u00ab compact \u00bb.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">La pr\u00e9sence de <\/span><b>nombreux<\/b><span style=\"font-weight: 400;\"> sph\u00e9rocytes sur un frottis sanguin est fortement \u00e9vocatrice d\u2019une <\/span><b>an\u00e9mie<\/b> <b>h\u00e9molytique \u00e0 m\u00e9diation immune<\/b><span style=\"font-weight: 400;\">. Lorsqu\u2019ils sont pr\u00e9sents en plus faible nombre, il convient \u00e9galement de consid\u00e9rer d&rsquo;autres \u00e9tats h\u00e9molytiques, tels que la fragmentation des h\u00e9maties ou les microangiopathies, observ\u00e9es par exemple lors de torsion spl\u00e9nique (Beeston D et al., 2024), d\u2019hypophosphat\u00e9mie ou d\u2019intoxications par morsure de serpent ou piq\u00fbres d\u2019insectes (Nair R et al., 2019).<\/span><\/p>\n<figure id=\"attachment_31711\" aria-describedby=\"caption-attachment-31711\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-31711 size-medium_large\" src=\"https:\/\/www.mylav.net\/wp-content\/uploads\/2025\/05\/07-fra-768x474.jpg\" alt=\"\" width=\"768\" height=\"474\" \/><figcaption id=\"caption-attachment-31711\" class=\"wp-caption-text\">Figure 7. Frottis sanguin, chien. An\u00e9mie h\u00e9molytique \u00e0 m\u00e9diation immune : pr\u00e9sence de nombreux sph\u00e9rocytes (fl\u00e8ches rouges), ainsi que d\u2019anisocytose et de polychromasie.<\/figcaption><\/figure>\n<p><b>\u00c9CCENTROCYTES<\/b><\/p>\n<p><span style=\"font-weight: 400;\">H\u00e9maties pr\u00e9sentant une concentration de l\u2019h\u00e9moglobine d\u2019un seul c\u00f4t\u00e9 de la cellule, entra\u00eenant un effondrement de la membrane sur le c\u00f4t\u00e9 oppos\u00e9. Cette alt\u00e9ration est souvent associ\u00e9e \u00e0 la pr\u00e9sence de <\/span><b>corps de Heinz<\/b><span style=\"font-weight: 400;\">, formations arrondies visibles \u00e0 la surface des h\u00e9maties (ou libres en p\u00e9riph\u00e9rie), correspondant \u00e0 de l\u2019h\u00e9moglobine oxyd\u00e9e.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Cette anomalie est indicative d\u2019un stress oxydatif, pouvant survenir \u00e0 la suite d\u2019une exposition \u00e0 des substances oxydantes (ex. ail, oignon, zinc, parac\u00e9tamol, propofol), dans le cadre de maladies m\u00e9taboliques ou hormonales (hyperthyro\u00efdie, acidoc\u00e9tose diab\u00e9tique) ou encore de processus n\u00e9oplasiques (lymphome).<\/span><\/p>\n<figure id=\"attachment_31718\" aria-describedby=\"caption-attachment-31718\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-31718 size-medium_large\" src=\"https:\/\/www.mylav.net\/wp-content\/uploads\/2025\/05\/08-fra-768x311.jpg\" alt=\"\" width=\"768\" height=\"311\" \/><figcaption id=\"caption-attachment-31718\" class=\"wp-caption-text\">Figure 8. Frottis sanguins, chien. An\u00e9mie h\u00e9molytique oxydative : corps de Heinz (fl\u00e8ches rouges) et eccentrocytes (fl\u00e8ches vertes).<\/figcaption><\/figure>\n<p><b>GHOST CELLS<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Il s\u2019agit des \u00ab fant\u00f4mes \u00bb des h\u00e9maties, r\u00e9sultant d\u2019un processus d\u2019h\u00e9molyse intravasculaire. Ces cellules ne sont plus constitu\u00e9es que de leur membrane, ayant perdu leur contenu normal en h\u00e9moglobine. Elles apparaissent donc vides et incolores au microscope.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">La lyse des h\u00e9maties peut \u00eatre li\u00e9e \u00e0 diverses conditions, telles que des processus immunom\u00e9di\u00e9s, un stress oxydatif, une hypophosphat\u00e9mie, des intoxications, etc.<\/span><\/p>\n<figure id=\"attachment_31725\" aria-describedby=\"caption-attachment-31725\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-31725 size-medium_large\" src=\"https:\/\/www.mylav.net\/wp-content\/uploads\/2025\/05\/09-fra-768x570.jpg\" alt=\"\" width=\"768\" height=\"570\" \/><figcaption id=\"caption-attachment-31725\" class=\"wp-caption-text\">Figure 9. Frottis sanguin, chat. An\u00e9mie h\u00e9molytique immunom\u00e9di\u00e9e : ghost cells (fl\u00e8ches rouges).<\/figcaption><\/figure>\n<p><b>SCHISTOCYTES<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Fragments d\u2019h\u00e9maties de taille et de forme irr\u00e9guli\u00e8res, r\u00e9sultant d\u2019une fragmentation dans la circulation sanguine, typique d\u2019un dommage m\u00e9canique. Ils sont observ\u00e9s lors d\u2019an\u00e9mie microangiopathique (ex. vascularites, endocardites, h\u00e9mangiosarcome, coagulation intravasculaire diss\u00e9min\u00e9e, etc.) ou en cas de fragilit\u00e9 \u00e9rythrocytaire accrue (ex. an\u00e9mie ferriprive).<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ils sont fr\u00e9quemment associ\u00e9s \u00e0 d\u2019autres alt\u00e9rations d\u00e9crites pr\u00e9c\u00e9demment, telles que les acanthocytes, sph\u00e9rocytes et k\u00e9ratocytes.<\/span><\/p>\n<figure id=\"attachment_31732\" aria-describedby=\"caption-attachment-31732\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-31732 size-medium_large\" src=\"https:\/\/www.mylav.net\/wp-content\/uploads\/2025\/05\/10-fra-768x491.jpg\" alt=\"\" width=\"768\" height=\"491\" \/><figcaption id=\"caption-attachment-31732\" class=\"wp-caption-text\">Figure 10. Frottis sanguin, chien. An\u00e9mie h\u00e9molytique par fragmentation li\u00e9e \u00e0 une endocardite : pr\u00e9sence de po\u00efkilocytose avec quelques schistocytes (fl\u00e8ches rouges).<\/figcaption><\/figure>\n<p><b>K\u00c9RATOCYTES<\/b><\/p>\n<p><span style=\"font-weight: 400;\">H\u00e9maties pr\u00e9sentant une petite v\u00e9sicule polaire qui, en se rompant, donne naissance \u00e0 deux protrusions r\u00e9guli\u00e8res situ\u00e9es du m\u00eame c\u00f4t\u00e9 de la cellule.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">S\u2019ils sont pr\u00e9sents en faible nombre, notamment chez le chat, ils ne sont g\u00e9n\u00e9ralement pas consid\u00e9r\u00e9s comme cliniquement significatifs. En revanche, leur pr\u00e9sence en quantit\u00e9 notable, associ\u00e9e \u00e0 d\u2019autres alt\u00e9rations morphologiques, peut \u00eatre indicative des situations suivantes :<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Fragmentation li\u00e9e \u00e0 un dommage m\u00e9canique ou \u00e0 une fragilit\u00e9 des h\u00e9maties accrue (souvent en association avec des schistocytes et des acanthocytes)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Stress oxydatif (en association avec des eccentrocytes et des corps de Heinz)<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">H\u00e9patopathies, en particulier chez le chat, notamment en cas de lipidose h\u00e9patique. Dans cette affection, on peut \u00e9galement observer des <\/span><b>elliptocytes<\/b><span style=\"font-weight: 400;\">, h\u00e9maties allong\u00e9s en forme de cigare, \u00e9galement signal\u00e9s en cas de my\u00e9lofibrose.<\/span><\/p>\n<figure id=\"attachment_31739\" aria-describedby=\"caption-attachment-31739\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-31739 size-medium_large\" src=\"https:\/\/www.mylav.net\/wp-content\/uploads\/2025\/05\/12-fra-768x477.jpg\" alt=\"\" width=\"768\" height=\"477\" \/><figcaption id=\"caption-attachment-31739\" class=\"wp-caption-text\">Figure 11. Frottis sanguin, chat. Lipidose h\u00e9patique : po\u00efkilocytose avec k\u00e9ratocytes (fl\u00e8ches rouges).<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<figure id=\"attachment_31746\" aria-describedby=\"caption-attachment-31746\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-31746 size-medium_large\" src=\"https:\/\/www.mylav.net\/wp-content\/uploads\/2025\/05\/13-fra-768x469.jpg\" alt=\"\" width=\"768\" height=\"469\" \/><figcaption id=\"caption-attachment-31746\" class=\"wp-caption-text\">Figure 12. Frottis sanguin, chat. My\u00e9lofibrose : pr\u00e9sence de po\u00efkilocytose, incluant des elliptocytes (fl\u00e8ches rouges).<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">Il existe d&rsquo;autres alt\u00e9rations des h\u00e9maties, certes moins importantes ou significatives que celles pr\u00e9c\u00e9demment d\u00e9crites. Certaines peuvent \u00eatre li\u00e9es \u00e0 des \u00e9tats pathologiques, mais elles sont plus fr\u00e9quemment associ\u00e9es \u00e0 des <\/span><b>artefacts<\/b><span style=\"font-weight: 400;\"> caus\u00e9s par :<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">un <\/span><b>s\u00e9chage lent<\/b><span style=\"font-weight: 400;\"> du frottis,<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">un <\/span><b>retard dans la pr\u00e9paration<\/b><span style=\"font-weight: 400;\"> de la lame,<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">ou un <\/span><b>exc\u00e8s d\u2019EDTA<\/b><span style=\"font-weight: 400;\"> par rapport \u00e0 la quantit\u00e9 de sang pr\u00e9lev\u00e9e dans le tube.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Parmi les alt\u00e9rations les plus couramment observ\u00e9es dans ce contexte, on retrouve les <\/span><b>\u00e9chinocytes<\/b><span style=\"font-weight: 400;\">, <\/span><b>codocytes<\/b><span style=\"font-weight: 400;\"> et <\/span><b>stomatocytes<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<figure id=\"attachment_31753\" aria-describedby=\"caption-attachment-31753\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-31753 size-medium_large\" src=\"https:\/\/www.mylav.net\/wp-content\/uploads\/2025\/05\/14-fra-768x206.jpg\" alt=\"\" width=\"768\" height=\"206\" \/><figcaption id=\"caption-attachment-31753\" class=\"wp-caption-text\">Figure 13. De gauche \u00e0 droite : \u00e9chinocytes, stomatocytes et codocytes.<\/figcaption><\/figure>\n<p><b>R\u00e9f\u00e9rences bibliographiques :<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Beeston D et al., JAVMA, 2024<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Nair R et al., Vet Clin Pathol, 2019<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Schaefer DMW et al., Vet Clin Pathol, 2009<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Stockham SL, Scott MA. Fundamentals of Veterinary Clinical Pathology, 2024<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Warry E et al., Vet Clin Pathol, 2013<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">https:\/\/eclinpath.com\/hematology\/morphologic-features\/red-blood-cells\/poikilocytosis\/<\/span><\/li>\n<\/ul>\n<p><b>Dr Giulia Mangiagalli<\/b><span style=\"font-weight: 400;\">, DMV, Dipl. ECVCP \u2013 Sp\u00e9cialiste europ\u00e9enne en pathologie clinique v\u00e9t\u00e9rinaire, MYLAV<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><b>Dr Walter Bertazzolo<\/b><span style=\"font-weight: 400;\">, DMV, Dipl. ECVCP \u2013 Sp\u00e9cialiste europ\u00e9en en pathologie clinique v\u00e9t\u00e9rinaire, Directeur scientifique de MYLAV<\/span><\/p>\n<p>Picture:\u00a0<a href=\"https:\/\/fr.freepik.com\/\" target=\"_blank\" rel=\"noopener\" data-saferedirecturl=\"https:\/\/www.google.com\/url?q=https:\/\/fr.freepik.com\/&amp;source=gmail&amp;ust=1748508614514000&amp;usg=AOvVaw3qn1R_CXQ4GG9N35pxZ9sD\">https:\/\/fr.freepik.<wbr \/>com\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>L&rsquo;examen du frottis sanguin permet d&rsquo;observer diff\u00e9rentes alt\u00e9rations morphologiques des h\u00e9maties, que ce soit dans [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":31760,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[1120],"tags":[],"class_list":["post-31668","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hematologie"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u00c0 LA D\u00c9COUVERTE DES ALT\u00c9RATIONS DES H\u00c9MATIES ET DE LEUR SIGNIFICATION CLINIQUE - MyLav<\/title>\n<meta name=\"description\" content=\"L&#039;examen du frottis sanguin permet d&#039;observer diff\u00e9rentes alt\u00e9rations morphologiques des h\u00e9maties, que ce soit dans le cadre de pathologies plus ou moins significatives, ou en raison d&#039;art\u00e9facts techniques.\" \/>\n<meta name=\"robots\" content=\"index, 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