Titre : Analyse spatio-temporelle

Analyse spatio-temporelle : Questions médicales fréquentes

Termes MeSH sélectionnés :

Lymph Node Excision
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"description": "Comment l'analyse spatio-temporelle aide-t-elle au diagnostic ?\nQuels outils sont utilisés pour l'analyse spatio-temporelle ?\nPeut-on détecter des épidémies avec cette méthode ?\nQuels types de données sont analysés ?\nL'analyse spatio-temporelle est-elle utilisée en santé publique ?", "url": "https://questionsmedicales.fr/mesh/D062211?mesh_terms=Lymph+Node+Excision&page=3#section-diagnostic" }, { "@type": "MedicalWebPage", "name": "Symptômes", "headline": "Symptômes sur Analyse spatio-temporelle", "description": "Quels symptômes peuvent être analysés spatio-temporellement ?\nComment les symptômes varient-ils dans le temps ?\nLes symptômes sont-ils influencés par l'environnement ?\nPeut-on prédire des symptômes avec cette analyse ?\nY a-t-il des variations géographiques des symptômes ?", "url": "https://questionsmedicales.fr/mesh/D062211?mesh_terms=Lymph+Node+Excision&page=3#section-symptômes" }, { "@type": "MedicalWebPage", "name": "Prévention", "headline": 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"https://questionsmedicales.fr/mesh/D062211?mesh_terms=Lymph+Node+Excision&page=3#section-facteurs de risque" } ] }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Comment l'analyse spatio-temporelle aide-t-elle au diagnostic ?", "position": 1, "acceptedAnswer": { "@type": "Answer", "text": "Elle permet d'identifier des tendances et des clusters de maladies dans le temps et l'espace." } }, { "@type": "Question", "name": "Quels outils sont utilisés pour l'analyse spatio-temporelle ?", "position": 2, "acceptedAnswer": { "@type": "Answer", "text": "Des systèmes d'information géographique (SIG) et des modèles statistiques sont couramment utilisés." } }, { "@type": "Question", "name": "Peut-on détecter des épidémies avec cette méthode ?", "position": 3, "acceptedAnswer": { "@type": "Answer", "text": "Oui, elle permet de détecter des épidémies en analysant les données géographiques et temporelles." } }, { "@type": "Question", "name": "Quels types de données sont analysés ?", "position": 4, "acceptedAnswer": { "@type": "Answer", "text": "Des données de santé, environnementales et démographiques sont souvent analysées." } }, { "@type": "Question", "name": "L'analyse spatio-temporelle est-elle utilisée en santé publique ?", "position": 5, "acceptedAnswer": { "@type": "Answer", "text": "Oui, elle est essentielle pour planifier des interventions de santé publique efficaces." } }, { "@type": "Question", "name": "Quels symptômes peuvent être analysés spatio-temporellement ?", "position": 6, "acceptedAnswer": { "@type": "Answer", "text": "Des symptômes liés à des maladies infectieuses, chroniques ou environnementales peuvent être analysés." } }, { "@type": "Question", "name": "Comment les symptômes varient-ils dans le temps ?", "position": 7, "acceptedAnswer": { "@type": "Answer", "text": "Les symptômes peuvent fluctuer selon les saisons, les épidémies ou les interventions sanitaires." } }, { "@type": "Question", "name": "Les symptômes sont-ils influencés par l'environnement ?", "position": 8, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des facteurs environnementaux comme la pollution peuvent exacerber certains symptômes." } }, { "@type": "Question", "name": "Peut-on prédire des symptômes avec cette analyse ?", "position": 9, "acceptedAnswer": { "@type": "Answer", "text": "Oui, l'analyse peut aider à prédire l'apparition de symptômes en fonction de données historiques." } }, { "@type": "Question", "name": "Y a-t-il des variations géographiques des symptômes ?", "position": 10, "acceptedAnswer": { "@type": "Answer", "text": "Oui, certaines maladies présentent des symptômes différents selon les régions géographiques." } }, { "@type": "Question", "name": "Comment l'analyse spatio-temporelle aide-t-elle à la prévention ?", "position": 11, "acceptedAnswer": { "@type": "Answer", "text": "Elle identifie les zones à risque et permet de cibler les interventions préventives." } }, { "@type": "Question", "name": "Peut-on évaluer l'impact des campagnes de prévention ?", "position": 12, "acceptedAnswer": { "@type": "Answer", "text": "Oui, l'analyse permet d'évaluer l'impact spatial et temporel des campagnes de prévention." } }, { "@type": "Question", "name": "Quels facteurs de risque sont analysés pour la prévention ?", "position": 13, "acceptedAnswer": { "@type": "Answer", "text": "Des facteurs comme l'environnement, le comportement et la démographie sont analysés." } }, { "@type": "Question", "name": "Les stratégies de prévention varient-elles selon les régions ?", "position": 14, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les stratégies doivent être adaptées aux spécificités locales et aux besoins de la population." } }, { "@type": "Question", "name": "Comment les données historiques aident-elles à la prévention ?", "position": 15, "acceptedAnswer": { "@type": "Answer", "text": "Elles permettent d'identifier des tendances et de prévoir des risques futurs pour mieux prévenir." } }, { "@type": "Question", "name": "Comment l'analyse spatio-temporelle influence-t-elle les traitements ?", "position": 16, "acceptedAnswer": { "@type": "Answer", "text": "Elle aide à adapter les traitements en fonction des tendances épidémiologiques locales." } }, { "@type": "Question", "name": "Les traitements sont-ils évalués spatialement ?", "position": 17, "acceptedAnswer": { "@type": "Answer", "text": "Oui, l'efficacité des traitements peut être évaluée en fonction de leur application géographique." } }, { "@type": "Question", "name": "Peut-on optimiser les ressources de traitement ?", "position": 18, "acceptedAnswer": { "@type": "Answer", "text": "Oui, l'analyse permet d'optimiser la distribution des ressources de santé en fonction des besoins." } }, { "@type": "Question", "name": "Les traitements varient-ils selon les régions ?", "position": 19, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les traitements peuvent varier en fonction des pratiques médicales et des ressources locales." } }, { "@type": "Question", "name": "Comment les traitements sont-ils suivis dans le temps ?", "position": 20, "acceptedAnswer": { "@type": "Answer", "text": "Les traitements sont suivis par des études longitudinales qui analysent leur efficacité au fil du temps." } }, { "@type": "Question", "name": "Quelles complications peuvent être identifiées par l'analyse ?", "position": 21, "acceptedAnswer": { "@type": "Answer", "text": "Des complications liées à des maladies chroniques ou infectieuses peuvent être identifiées." } }, { "@type": "Question", "name": "Comment les complications varient-elles dans le temps ?", "position": 22, "acceptedAnswer": { "@type": "Answer", "text": "Elles peuvent augmenter ou diminuer en fonction des interventions et des changements environnementaux." } }, { "@type": "Question", "name": "Les complications sont-elles influencées par des facteurs géographiques ?", "position": 23, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des facteurs comme l'accès aux soins et l'environnement peuvent influencer les complications." } }, { "@type": "Question", "name": "Peut-on prédire des complications avec cette méthode ?", "position": 24, "acceptedAnswer": { "@type": "Answer", "text": "Oui, l'analyse permet de prédire des complications en fonction de données antérieures et de modèles." } }, { "@type": "Question", "name": "Comment les complications sont-elles suivies ?", "position": 25, "acceptedAnswer": { "@type": "Answer", "text": "Elles sont suivies par des études épidémiologiques qui analysent leur fréquence et leur gravité." } }, { "@type": "Question", "name": "Quels facteurs de risque sont analysés ?", "position": 26, "acceptedAnswer": { "@type": "Answer", "text": "Des facteurs environnementaux, comportementaux et génétiques sont souvent analysés." } }, { "@type": "Question", "name": "Comment les facteurs de risque varient-ils dans le temps ?", "position": 27, "acceptedAnswer": { "@type": "Answer", "text": "Ils peuvent évoluer avec les changements de mode de vie, de politique de santé ou d'environnement." } }, { "@type": "Question", "name": "Les facteurs de risque sont-ils différents selon les régions ?", "position": 28, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les facteurs de risque peuvent varier considérablement d'une région à l'autre." } }, { "@type": "Question", "name": "Peut-on identifier des facteurs de risque spécifiques ?", "position": 29, "acceptedAnswer": { "@type": "Answer", "text": "Oui, l'analyse permet d'identifier des facteurs de risque spécifiques à certaines populations." } }, { "@type": "Question", "name": "Comment les données spatio-temporelles aident-elles à comprendre les risques ?", "position": 30, "acceptedAnswer": { "@type": "Answer", "text": "Elles fournissent un contexte pour comprendre comment et pourquoi les risques varient dans le temps et l'espace." } } ] } ] }

Sources (8031 au total)

N1 lymph node detection in lymph node harvesting in non-small cell lung cancer: Formaldehyde exposure is a drawback?

This study aimed to evaluate the effect of lymph node dissection method on staging results, diagnosis of tumor metastasis in single or multiple N1 lymph nodes and survival rates in patients with non-s... Patients with NSCLC who underwent anatomic resection between September 2014 and October 2019 were examined prospectively. All patients with similar clinico-demographic characteristics were randomly as... There were no significant differences in N1 lymph node positivity between the two groups (p = 0.482). On average 9.08 lymph node sampling was performed in the surgical group and 2.39 in the pathology ... It is easier to detect lymph node involvement without introducing formaldehyde into the sample. We recommend that N1 lymph node dissection be performed on fresh specimens to detect more lymph node inv...

Single-cell profile of tumor and immune cells in primary breast cancer, sentinel lymph node, and metastatic lymph node.

Little is known about the host-tumor interaction in the lymph-node basin at a single cell level. This study examines single cell sequences in breast cancer nodal metastases of a patient with triple-ne... The primary breast tumor, sentinel lymph node, an adjacent lymph node with metastatic involvement and a clinically normal-appearing lymph node were collected during surgery. Single-cell sequencing was... 14,016 cells were clustered into 6 cell subpopulations. Cancer cells demonstrated the molecular characteristics of TNBC basal B subtype and highly expressed genes in the MAPK signaling cascade. Tumor-... Single-cell sequencing analysis suggested that the sentinel lymph node was the initial meeting site of tumor infiltration and immune response, where partial T lymphocytes perform anti-tumor activity, ...

National Practice Patterns in the Management of the Regional Lymph Node Basin After Positive Sentinel Lymph Node Biopsy for Cutaneous Melanoma.

Immediate completion lymph node dissection (CLND) for patients with sentinel lymph node (SLN) metastasis from cutaneous melanoma has been replaced largely by ultrasound nodal surveillance since the pu... Patients with a diagnosis of cutaneous melanoma in 2016 and 2018 without clinical nodal disease who underwent sentinel lymph node biopsy (SLNB) were identified from the National Cancer Database (NCDB)... Of the 3517 patients included in the study, 1405 had disease diagnosed in 2016. The patients with cutaneous melanoma diagnosed in 2016 had a median age of 60 years and a tumor thickness of 2.3 mm comp... The rates of CLND have decreased nationally. However, patients with head/neck primary tumors who live in rural locations are more likely to undergo CLND, highlighting populations for which treatment m...

[Radiologic evaluation of lymph nodes in cancer patients].

In solid tumors, the detection of locoregional lymph node metastases is of decisive importance not only for the prognosis but also for selecting the correct treatment. Various noninvasive imaging meth... This article presents the general principles of noninvasive lymph node diagnostics and discusses the value of the clinically available imaging modalities, ultrasound (US), computed tomography (CT), ma... Literature search and summary of the clinical and scientific experience of the authors.... The available imaging procedures are divided into (1) morphological (US, CT, MRI) and (2) functional modalities (PET, special MRI). The former capture structural lymph node parameters, such as size an... Currently, none of the available modalities have sufficient accuracy to replace lymph node dissection in all oncological scenarios. One of the major challenges for interdisciplinary oncological resear...

Histology of metastatic colorectal cancer in a lymph node.

A primary colorectal cancer (CRC) tumor can contain heterogeneous cancer cells. As clones of cells with different properties metastasize to lymph nodes (LNs), they could show different morphologies. C... Our study enrolled 318 consecutive patients with CRC who underwent primary tumor resection with lymph node dissection between January 2011 and June 2016. 119 (37.4%) patients who had metastatic LNs (m... The histologies of the cancer cells in the mLNs were classified into four types: tubular, cribriform, poorly differentiated, and mucinous. Same degree of pathologically diagnosed differentiation in th... Histology in LNM from CRC might indicate the heterogeneity and malignant phenotype of the disease....

A CT-based radiomics model for predicting lymph node metastasis in hepatic alveolar echinococcosis patients to support lymph node dissection.

Hepatic alveolar echinococcosis (AE) is a severe zoonotic parasitic disease, and accurate preoperative prediction of lymph node (LN) metastasis in AE patients is crucial for disease management, but it... A total of 100 hepatic AE patients who underwent hepatectomy and hepatoduodenal ligament LN dissection at Qinghai Provincial People's Hospital between January 2016 and August 2023 were included in the... A total of 7 radiomics features associated with LN status were selected using LASSO regression. The classification performances of the training set and validation set were consistent, with area under ... In this study, we established and evaluated a radiomics-based prediction model for LN metastasis in patients with hepatic AE using CT imaging. Our findings may provide a valuable reference for clinici...

Bilateral inguinal lymph-node dissection vs. unilateral inguinal lymph-node dissection and dynamic sentinel node biopsy in clinical N1 squamous cell carcinoma of the penis.

To evaluate the role of unilateral inguinal lymph-node dissection (ILND) plus contralateral dynamic sentinel node biopsy (DSNB) vs. bilateral ILND in clinical N1 (cN1) penile squamous cell carcinoma (... Within our institutional database (1980-2020, included), we identified 61 consecutive cT1-4 cN1 cM0 patients with histological confirmed peSCC who underwent either unilateral ILND plus DSNB (26) or bi... Median age was 54 years (Interquartile range [IQR]: 48-60 years). Median follow-up was 68 months (IQR 21-105 months). Most patients had pT1 (23 %) or pT2 (54.1%), as well as G2 (47.5%) or G3 (23%) tum... In patients with cN1 peSCC the risk of occult contralateral nodal disease is comparable to cN0 high risk peSCC and the gold standard, namely bilateral ILND, may be replaced by unilateral ILND and cont...

Prediction of the number of positive axillary lymph nodes according to sentinel lymph node involvement and biological subtypes in patients receiving neoadjuvant chemotherapy.

Sentinel lymph node biopsy (SLNB) has replaced axillary lymph node dissection (ALND) for assessing axillary lymph node status in clinically node-negative breast cancer patients. However, the approach ... After NAC, 150 clinically node-negative patients were included. The relationships between clinicopathologic parameters and the number of positive lymph nodes in SLNBs and ALNDs were assessed through b... Among 150 patients, 78 patients had negative SLNBs, and 72 patients had positive SLNBs. According to the ALND data of 21 patients with SLNB1+, there was no additional node involvement (80.8%), 1-2 lym... The number of SLNB-positive nodes, tumor-related parameters, and response to treatment may predict no additional nodes to be positive at ALND....