Titre : Carence en vitamine B12

Carence en vitamine B12 : Questions médicales fréquentes

Termes MeSH sélectionnés :

Colonic Neoplasms
{ "@context": "https://schema.org", "@graph": [ { "@type": "MedicalWebPage", "name": "Carence en vitamine B12 : Questions médicales les plus fréquentes", "headline": "Carence en vitamine B12 : Comprendre les symptômes, diagnostics et traitements", "description": "Guide complet et accessible sur les Carence en vitamine B12 : explications, diagnostics, traitements et prévention. Information médicale validée destinée aux patients.", "datePublished": "2024-03-25", "dateModified": "2025-03-20", "inLanguage": "fr", "medicalAudience": [ { "@type": "MedicalAudience", "name": "Grand public", "audienceType": "Patient", "healthCondition": { "@type": "MedicalCondition", "name": "Carence en vitamine B12" }, "suggestedMinAge": 18, "suggestedGender": "unisex" }, { "@type": "MedicalAudience", "name": "Médecins", "audienceType": "Physician", "geographicArea": { "@type": "AdministrativeArea", "name": "France" } }, { "@type": "MedicalAudience", "name": "Chercheurs", "audienceType": "Researcher", "geographicArea": { "@type": "AdministrativeArea", "name": "International" } } ], "reviewedBy": { "@type": "Person", "name": "Dr Olivier Menir", "jobTitle": "Expert en Médecine", "description": "Expert en Médecine, Optimisation des Parcours de Soins et Révision Médicale", "url": "/static/pages/docteur-olivier-menir.html", "alumniOf": { "@type": "EducationalOrganization", "name": "Université Paris Descartes" } }, "isPartOf": { "@type": "MedicalWebPage", "name": "Carence en vitamines B", "url": "https://questionsmedicales.fr/mesh/D014804", "about": { "@type": "MedicalCondition", "name": "Carence en vitamines B", "code": { "@type": "MedicalCode", "code": "D014804", "codingSystem": "MeSH" }, "identifier": { "@type": "PropertyValue", "propertyID": "MeSH Tree", "value": "C18.654.521.500.133.699" } } }, "hasPart": [ { "@type": "MedicalWebPage", "name": "Anémie pernicieuse", "alternateName": "Anemia, Pernicious", "url": "https://questionsmedicales.fr/mesh/D000752", "about": { "@type": "MedicalCondition", "name": "Anémie pernicieuse", "code": { "@type": "MedicalCode", "code": "D000752", "codingSystem": "MeSH" }, "identifier": { "@type": "PropertyValue", "propertyID": "MeSH Tree", "value": "C18.654.521.500.133.699.923.280" } } } ], "about": { "@type": "MedicalCondition", "name": "Carence en vitamine B12", "alternateName": "Vitamin B 12 Deficiency", "code": { "@type": "MedicalCode", "code": "D014806", "codingSystem": "MeSH" } }, "author": [ { "@type": "Person", "name": "Dorota Gryko", "url": "https://questionsmedicales.fr/author/Dorota%20Gryko", "affiliation": { "@type": "Organization", "name": "Institute of Organic Chemistry, Polish Academy of Sciences, Warsaw, Poland. dorota.gryko@icho.edu.pl." } }, { "@type": "Person", "name": "Jacob Selhub", "url": "https://questionsmedicales.fr/author/Jacob%20Selhub", "affiliation": { "@type": "Organization", "name": "" } }, { "@type": "Person", "name": "Setareh Shahab-Ferdows", "url": "https://questionsmedicales.fr/author/Setareh%20Shahab-Ferdows", "affiliation": { "@type": "Organization", "name": "Department of Agriculture, Agricultural Research Service, Western Human Nutrition Research Center, Davis, CA, United States." } }, { "@type": "Person", "name": "Daniela Hampel", "url": "https://questionsmedicales.fr/author/Daniela%20Hampel", "affiliation": { "@type": "Organization", "name": "Department of Agriculture, Agricultural Research Service, Western Human Nutrition Research Center, Davis, CA, United States; Department of Nutrition, University of California, Davis, CA, United States." } }, { "@type": "Person", "name": "Lindsay H Allen", "url": "https://questionsmedicales.fr/author/Lindsay%20H%20Allen", "affiliation": { "@type": "Organization", "name": "Department of Agriculture, Agricultural Research Service, Western Human Nutrition Research Center, Davis, CA, United States." } } ], "citation": [ { "@type": "ScholarlyArticle", "name": "Self-expanding metal stents for the treatment of malignant colon obstruction from extra-colonic malignancy versus intra-colonic malignancy: a systematic review and meta-analysis.", "datePublished": "2023-03-22", "url": "https://questionsmedicales.fr/article/36947223", "identifier": { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.1007/s00464-023-09943-6" } }, { "@type": "ScholarlyArticle", "name": "Colon Targeted Eudragit Coated Beads Loaded with Optimized Fluvastatin-Scorpion Venom Conjugate as a Potential Approach for Colon Cancer Therapy: In Vitro Anticancer Activity and In Vivo Colon Imaging.", "datePublished": "2022-08-23", "url": "https://questionsmedicales.fr/article/36007556", "identifier": { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.1016/j.xphs.2022.08.020" } }, { "@type": "ScholarlyArticle", "name": "[What is confirmed in the treatment of colon cancer?]", "datePublished": "2022-11-15", "url": "https://questionsmedicales.fr/article/36380005", "identifier": { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.1007/s00108-022-01419-4" } }, { "@type": "ScholarlyArticle", "name": "Primary colonic melanoma: a rare entity.", "datePublished": "2022-08-10", "url": "https://questionsmedicales.fr/article/35948931", "identifier": { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.1186/s12957-022-02721-z" } }, { "@type": "ScholarlyArticle", "name": "[Surgery of the colon cancer - Expected standards].", "datePublished": "2023-05-02", "url": "https://questionsmedicales.fr/article/37130024", "identifier": { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.1556/1046.2023.10012" } } ], "breadcrumb": { "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "questionsmedicales.fr", "item": "https://questionsmedicales.fr" }, { "@type": "ListItem", "position": 2, "name": "Maladies métaboliques et nutritionnelles", "item": "https://questionsmedicales.fr/mesh/D009750" }, { "@type": "ListItem", "position": 3, "name": "Troubles nutritionnels", "item": "https://questionsmedicales.fr/mesh/D009748" }, { "@type": "ListItem", "position": 4, "name": "Malnutrition", "item": "https://questionsmedicales.fr/mesh/D044342" }, { "@type": "ListItem", "position": 5, "name": "Maladies de carence", "item": "https://questionsmedicales.fr/mesh/D003677" }, { "@type": "ListItem", "position": 6, "name": "Avitaminoses", "item": "https://questionsmedicales.fr/mesh/D001361" }, { "@type": "ListItem", "position": 7, "name": "Carence en vitamines B", "item": "https://questionsmedicales.fr/mesh/D014804" }, { "@type": "ListItem", "position": 8, "name": "Carence en vitamine B12", "item": "https://questionsmedicales.fr/mesh/D014806" } ] } }, { "@type": "MedicalWebPage", "name": "Article complet : Carence en vitamine B12 - Questions et réponses", "headline": "Questions et réponses médicales fréquentes sur Carence en vitamine B12", "description": "Une compilation de questions et réponses structurées, validées par des experts médicaux.", "datePublished": "2025-05-16", "inLanguage": "fr", "hasPart": [ { "@type": "MedicalWebPage", "name": "Diagnostic", "headline": "Diagnostic sur Carence en vitamine B12", "description": "Comment diagnostiquer une carence en vitamine B12 ?\nQuels tests sont utilisés pour confirmer la carence ?\nQuels signes cliniques indiquent une carence ?\nLa carence en B12 peut-elle être asymptomatique ?\nQuel rôle joue l'historique médical dans le diagnostic ?", "url": "https://questionsmedicales.fr/mesh/D014806?mesh_terms=Colonic+Neoplasms&page=2#section-diagnostic" }, { "@type": "MedicalWebPage", "name": "Symptômes", "headline": "Symptômes sur Carence en vitamine B12", "description": "Quels sont les symptômes courants de la carence en B12 ?\nLa carence en B12 peut-elle causer des problèmes neurologiques ?\nComment la carence affecte-t-elle la peau ?\nY a-t-il des symptômes digestifs associés ?\nLes symptômes varient-ils selon l'âge ?", "url": "https://questionsmedicales.fr/mesh/D014806?mesh_terms=Colonic+Neoplasms&page=2#section-symptômes" }, { "@type": "MedicalWebPage", "name": "Prévention", "headline": "Prévention sur Carence en vitamine B12", "description": "Comment prévenir la carence en vitamine B12 ?\nLes personnes âgées doivent-elles prendre des suppléments ?\nLes végétaliens peuvent-ils éviter la carence ?\nLes tests réguliers sont-ils recommandés ?\nLes maladies digestives augmentent-elles le risque ?", "url": "https://questionsmedicales.fr/mesh/D014806?mesh_terms=Colonic+Neoplasms&page=2#section-prévention" }, { "@type": "MedicalWebPage", "name": "Traitements", "headline": "Traitements sur Carence en vitamine B12", "description": "Comment traiter une carence en vitamine B12 ?\nQuelle est la durée du traitement ?\nLes aliments peuvent-ils aider à corriger la carence ?\nLes personnes végétariennes sont-elles à risque ?\nLes traitements sont-ils différents pour les enfants ?", "url": "https://questionsmedicales.fr/mesh/D014806?mesh_terms=Colonic+Neoplasms&page=2#section-traitements" }, { "@type": "MedicalWebPage", "name": "Complications", "headline": "Complications sur Carence en vitamine B12", "description": "Quelles complications peuvent survenir ?\nLa carence peut-elle entraîner des problèmes cognitifs ?\nY a-t-il un risque accru de maladies cardiovasculaires ?\nLes complications sont-elles réversibles ?\nLa carence en B12 peut-elle affecter la grossesse ?", "url": "https://questionsmedicales.fr/mesh/D014806?mesh_terms=Colonic+Neoplasms&page=2#section-complications" }, { "@type": "MedicalWebPage", "name": "Facteurs de risque", "headline": "Facteurs de risque sur Carence en vitamine B12", "description": "Qui est le plus à risque de carence en B12 ?\nLes maladies auto-immunes augmentent-elles le risque ?\nLes médicaments peuvent-ils influencer le risque ?\nLes troubles digestifs sont-ils un facteur de risque ?\nLes antécédents familiaux jouent-ils un rôle ?", "url": "https://questionsmedicales.fr/mesh/D014806?mesh_terms=Colonic+Neoplasms&page=2#section-facteurs de risque" } ] }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Comment diagnostiquer une carence en vitamine B12 ?", "position": 1, "acceptedAnswer": { "@type": "Answer", "text": "Un diagnostic se fait par des analyses sanguines mesurant les niveaux de vitamine B12." } }, { "@type": "Question", "name": "Quels tests sont utilisés pour confirmer la carence ?", "position": 2, "acceptedAnswer": { "@type": "Answer", "text": "Les tests incluent la mesure de la vitamine B12, de l'homocystéine et de la méthylmalonyl-CoA." } }, { "@type": "Question", "name": "Quels signes cliniques indiquent une carence ?", "position": 3, "acceptedAnswer": { "@type": "Answer", "text": "Des signes comme l'anémie, la fatigue, et des troubles neurologiques peuvent indiquer une carence." } }, { "@type": "Question", "name": "La carence en B12 peut-elle être asymptomatique ?", "position": 4, "acceptedAnswer": { "@type": "Answer", "text": "Oui, certaines personnes peuvent avoir une carence sans présenter de symptômes visibles." } }, { "@type": "Question", "name": "Quel rôle joue l'historique médical dans le diagnostic ?", "position": 5, "acceptedAnswer": { "@type": "Answer", "text": "L'historique médical aide à identifier des facteurs de risque comme des troubles d'absorption." } }, { "@type": "Question", "name": "Quels sont les symptômes courants de la carence en B12 ?", "position": 6, "acceptedAnswer": { "@type": "Answer", "text": "Les symptômes incluent fatigue, faiblesse, engourdissements et troubles de l'humeur." } }, { "@type": "Question", "name": "La carence en B12 peut-elle causer des problèmes neurologiques ?", "position": 7, "acceptedAnswer": { "@type": "Answer", "text": "Oui, elle peut entraîner des troubles neurologiques comme des démences ou des neuropathies." } }, { "@type": "Question", "name": "Comment la carence affecte-t-elle la peau ?", "position": 8, "acceptedAnswer": { "@type": "Answer", "text": "Elle peut provoquer des changements cutanés comme une pâleur ou des lésions cutanées." } }, { "@type": "Question", "name": "Y a-t-il des symptômes digestifs associés ?", "position": 9, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des symptômes comme des nausées, des diarrhées ou des troubles digestifs peuvent survenir." } }, { "@type": "Question", "name": "Les symptômes varient-ils selon l'âge ?", "position": 10, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les symptômes peuvent être plus prononcés chez les personnes âgées en raison de l'absorption réduite." } }, { "@type": "Question", "name": "Comment prévenir la carence en vitamine B12 ?", "position": 11, "acceptedAnswer": { "@type": "Answer", "text": "Une alimentation équilibrée incluant des sources de B12 et des suppléments si nécessaire aide." } }, { "@type": "Question", "name": "Les personnes âgées doivent-elles prendre des suppléments ?", "position": 12, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les personnes âgées peuvent avoir besoin de suppléments en raison d'une absorption réduite." } }, { "@type": "Question", "name": "Les végétaliens peuvent-ils éviter la carence ?", "position": 13, "acceptedAnswer": { "@type": "Answer", "text": "Ils doivent prendre des suppléments de B12 ou consommer des aliments enrichis pour éviter la carence." } }, { "@type": "Question", "name": "Les tests réguliers sont-ils recommandés ?", "position": 14, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des tests réguliers sont conseillés pour les personnes à risque de carence." } }, { "@type": "Question", "name": "Les maladies digestives augmentent-elles le risque ?", "position": 15, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des maladies comme la maladie de Crohn peuvent affecter l'absorption de la vitamine B12." } }, { "@type": "Question", "name": "Comment traiter une carence en vitamine B12 ?", "position": 16, "acceptedAnswer": { "@type": "Answer", "text": "Le traitement inclut des suppléments oraux ou des injections de vitamine B12 selon la gravité." } }, { "@type": "Question", "name": "Quelle est la durée du traitement ?", "position": 17, "acceptedAnswer": { "@type": "Answer", "text": "La durée dépend de la gravité, mais peut durer de quelques mois à plusieurs années." } }, { "@type": "Question", "name": "Les aliments peuvent-ils aider à corriger la carence ?", "position": 18, "acceptedAnswer": { "@type": "Answer", "text": "Oui, consommer des aliments riches en B12 comme la viande, le poisson et les produits laitiers aide." } }, { "@type": "Question", "name": "Les personnes végétariennes sont-elles à risque ?", "position": 19, "acceptedAnswer": { "@type": "Answer", "text": "Oui, elles peuvent être à risque en raison d'un apport alimentaire limité en vitamine B12." } }, { "@type": "Question", "name": "Les traitements sont-ils différents pour les enfants ?", "position": 20, "acceptedAnswer": { "@type": "Answer", "text": "Les traitements sont similaires, mais les doses peuvent varier selon l'âge et le poids." } }, { "@type": "Question", "name": "Quelles complications peuvent survenir ?", "position": 21, "acceptedAnswer": { "@type": "Answer", "text": "Des complications incluent l'anémie mégaloblastique, des troubles neurologiques et des problèmes cardiaques." } }, { "@type": "Question", "name": "La carence peut-elle entraîner des problèmes cognitifs ?", "position": 22, "acceptedAnswer": { "@type": "Answer", "text": "Oui, une carence prolongée peut causer des troubles cognitifs et des pertes de mémoire." } }, { "@type": "Question", "name": "Y a-t-il un risque accru de maladies cardiovasculaires ?", "position": 23, "acceptedAnswer": { "@type": "Answer", "text": "Oui, une carence en B12 peut augmenter le risque de maladies cardiovasculaires en élevant l'homocystéine." } }, { "@type": "Question", "name": "Les complications sont-elles réversibles ?", "position": 24, "acceptedAnswer": { "@type": "Answer", "text": "Certaines complications peuvent être réversibles avec un traitement approprié, d'autres non." } }, { "@type": "Question", "name": "La carence en B12 peut-elle affecter la grossesse ?", "position": 25, "acceptedAnswer": { "@type": "Answer", "text": "Oui, elle peut entraîner des complications pendant la grossesse, comme des malformations congénitales." } }, { "@type": "Question", "name": "Qui est le plus à risque de carence en B12 ?", "position": 26, "acceptedAnswer": { "@type": "Answer", "text": "Les personnes âgées, les végétariens, et ceux ayant des troubles d'absorption sont à risque." } }, { "@type": "Question", "name": "Les maladies auto-immunes augmentent-elles le risque ?", "position": 27, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des maladies comme la gastrite atrophique peuvent affecter l'absorption de la B12." } }, { "@type": "Question", "name": "Les médicaments peuvent-ils influencer le risque ?", "position": 28, "acceptedAnswer": { "@type": "Answer", "text": "Oui, certains médicaments comme les inhibiteurs de la pompe à protons peuvent réduire l'absorption." } }, { "@type": "Question", "name": "Les troubles digestifs sont-ils un facteur de risque ?", "position": 29, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des troubles comme la maladie cœliaque peuvent nuire à l'absorption de la vitamine B12." } }, { "@type": "Question", "name": "Les antécédents familiaux jouent-ils un rôle ?", "position": 30, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des antécédents familiaux de carence peuvent augmenter le risque chez certains individus." } } ] } ] }

Sources (9927 au total)

Self-expanding metal stents for the treatment of malignant colon obstruction from extra-colonic malignancy versus intra-colonic malignancy: a systematic review and meta-analysis.

The relative utility of self-expanding metal stent (SEMS) insertion for malignant colon obstruction (MCO) due to extra-colonic malignancy (ECM) versus intra-colonic malignancy (ICM) is understudied.... A systematic search was done from inception-April 2021 to identify reports of safety and efficacy of SEMS insertion for the treatment of MCO-ECM versus MCO-ICM. A meta-analysis of proportions, compara... Eight non-randomized studies were identified; 46% (39-53%) and 63% (59-67%) of patients in the ECM and ICM groups were male. Most obstructions were in the rectosigmoid colon in both ECM and ICM groups... SEMS for MCO-ECM may have a technical success rate comparable to or questionably worse than MCO-ICM, with low certainty in estimate of effects. SEMS deployment in MCO-ECM carries a higher risk of clin...

Colon Targeted Eudragit Coated Beads Loaded with Optimized Fluvastatin-Scorpion Venom Conjugate as a Potential Approach for Colon Cancer Therapy: In Vitro Anticancer Activity and In Vivo Colon Imaging.

Preclinical studies suggest that most of statins or 3‑hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase inhibitors possess pleiotropic anticancer activity. The aim of the present work was to inv...

Novel approach toward minimally invasive surgery for mid-transverse colon cancer: 'moving the left colon' technique.

During surgery for mid-transverse colon cancer (MTC), surgeons often face the dilemma of whether to mobilize the hepatic or splenic flexure. There is no established optimal minimally invasive surgical... We present our novel minimally invasive surgical technique, called the 'moving the left colon' technique for MTC, along with a video demonstration. The procedure involves four main steps: (i) mobiliza... Between April 2021 and January 2023, a single-skilled colorectal surgeon performed laparoscopic transverse colectomies using our new approach on three consecutive patients with MTC. The patients had a... We introduced a novel approach for laparoscopic surgery for MTC. This technique can be performed safely and may help standardize minimally invasive surgery for MTC....

Co-cultures of colon cancer cells and cancer-associated fibroblasts recapitulate the aggressive features of mesenchymal-like colon cancer.

Poor prognosis in colon cancer is associated with a high content of cancer-associated fibroblasts (CAFs) and an immunosuppressive tumor microenvironment. The relationship between these two features is... CAFs were isolated from colon cancer liver metastases and were immortalized to prolong lifespan and improve robustness and reproducibility. Established medium and matrix compositions that support the ... We developed a co-culture system in which colon cancer organoids and CAFs spontaneously organize into superstructures with a high capacity to contract and stiffen the extracellular matrix (ECM). CAF-p... Co-cultures of organoids and immortalized CAFs recapitulate the histological, biophysical, and immunosuppressive features of aggressive mesenchymal-like human CRC. The model can be used to study the m...

Robotic colectomy with CME versus laparoscopic colon resection with or without CME for colon cancer: a systematic review and meta-analysis.

This systematic review with meta-analysis aimed to compare the robotic complete mesocolon excision (RCME) to laparoscopic colectomy (LC) with (LCME) or without CME (LC non-CME) in postoperative outcom... We performed a systematic review with meta-analysis according to PRISMA 2020 and AMSTAR 2 guidelines.... The literature search yielded seven comparative studies including 677 patients: 269 patients in the RCME group and 408 in the LC group. The pooled analysis concluded to a lower conversion rate in the ... The robotic approach for CME ensures a lower conversion rate than the LC. RCME had a longer operative time than the LCME subgroup and a higher number of harvested lymph nodes than the LC non-CME group...