Comment diagnostiquer une lésion du cortex visuel ?

Un examen neurologique et des imageries cérébrales comme l'IRM sont utilisés.

Quels tests évaluent la fonction visuelle ?

Des tests de champ visuel et d'acuité visuelle sont couramment utilisés.

Quels signes indiquent une dysfonction du cortex visuel ?

Des troubles de la perception visuelle, comme l'agnosie, peuvent indiquer une dysfonction.

Quel rôle joue l'électroencéphalogramme (EEG) ?

L'EEG peut aider à détecter des anomalies électriques liées à des troubles visuels.

Comment évaluer la vision des couleurs ?

Des tests spécifiques comme le test de Ishihara sont utilisés pour évaluer la vision des couleurs.

Quels sont les symptômes d'une lésion du cortex visuel ?

Les symptômes incluent des troubles de la vision, des hallucinations visuelles et des difficultés de reconnaissance.

Comment se manifeste l'agnosie visuelle ?

L'agnosie visuelle se manifeste par l'incapacité de reconnaître des objets malgré une vision intacte.

Qu'est-ce que l'hémianopsie ?

L'hémianopsie est une perte de vision dans une moitié du champ visuel, souvent due à des lésions cérébrales.

Quels troubles peuvent affecter la perception des mouvements ?

Des troubles comme la simultagnosie peuvent affecter la perception des mouvements et des objets.

Quels symptômes indiquent une migraine occulaire ?

Les symptômes incluent des troubles visuels temporaires, comme des éclairs lumineux ou des taches.

Comment prévenir les lésions cérébrales ?

Éviter les traumatismes crâniens, adopter un mode de vie sain et contrôler les maladies vasculaires.

Quels examens réguliers sont recommandés ?

Des examens ophtalmologiques réguliers peuvent aider à détecter précocement des troubles visuels.

Comment réduire le risque de migraines ?

Éviter les déclencheurs connus, gérer le stress et maintenir une bonne hydratation peuvent aider.

Quels conseils pour protéger la santé oculaire ?

Porter des lunettes de soleil, éviter les écrans excessifs et avoir une alimentation équilibrée.

Comment gérer le stress pour prévenir les troubles visuels ?

Des techniques de relaxation comme le yoga et la méditation peuvent aider à réduire le stress.

Quels traitements existent pour les troubles visuels ?

Les traitements incluent la rééducation visuelle, la thérapie occupationnelle et parfois des médicaments.

Comment traiter l'agnosie visuelle ?

La thérapie cognitive et des exercices de reconnaissance peuvent aider à traiter l'agnosie.

Quels médicaments peuvent aider les migraines visuelles ?

Des médicaments comme les triptans et les anti-inflammatoires peuvent soulager les migraines.

Comment la rééducation visuelle fonctionne-t-elle ?

La rééducation visuelle utilise des exercices pour améliorer la perception et la reconnaissance visuelle.

Quels sont les traitements pour l'hémianopsie ?

Des stratégies de compensation et des exercices de champ visuel peuvent aider à gérer l'hémianopsie.

Quelles complications peuvent survenir après une lésion du cortex visuel ?

Des complications incluent des troubles cognitifs, des problèmes de coordination et des difficultés d'apprentissage.

Comment l'hémianopsie affecte-t-elle la vie quotidienne ?

L'hémianopsie peut compliquer la conduite, la lecture et d'autres activités nécessitant une vision complète.

Quels risques sont associés à l'agnosie visuelle ?

L'agnosie peut entraîner des difficultés dans les interactions sociales et des problèmes d'autonomie.

Quelles sont les conséquences des migraines fréquentes ?

Des migraines fréquentes peuvent entraîner des troubles de l'humeur, de l'anxiété et des absences au travail.

Comment les troubles visuels peuvent-ils affecter l'éducation ?

Les troubles visuels peuvent nuire à l'apprentissage, nécessitant des adaptations scolaires spécifiques.

Quels facteurs augmentent le risque de lésions cérébrales ?

Les traumatismes crâniens, les AVC et les maladies neurodégénératives augmentent le risque.

Comment l'âge influence-t-il les troubles visuels ?

Le vieillissement peut entraîner une dégénérescence des cellules nerveuses et des troubles visuels.

Quels rôles jouent les antécédents familiaux ?

Les antécédents familiaux de troubles neurologiques peuvent augmenter le risque de dysfonction visuelle.

Comment le diabète affecte-t-il la vision ?

Le diabète peut entraîner des complications oculaires comme la rétinopathie diabétique, affectant la vision.

Quels comportements augmentent le risque de migraines ?

Le stress, le manque de sommeil et une mauvaise alimentation peuvent déclencher des migraines.

Cortex visuel - Informations médicales vérifiées

Targeted lateral pelvic lymph node excision in the setting of total neoadjuvant therapy for rectal cancer.

03 2023

DOI: 10.1111/ans.18149 PMID: 36398435

Targeted lateral pelvic node dissection in the era of total neoadjuvant therapy....

Humans Neoadjuvant Therapy Lymph Node Excision Lymph Nodes Pelvis +3 autres

Prone position thoracoscopic-assisted total mesoesophageal excision: initial experiences and benefits of lymph node dissection.

03 2023

DOI: 10.1007/s00464-022-09704-x PMID: 36289085

Total mesoesophageal excision (TME) is a promising procedure. Prone position thoracoscopic-assisted TME might be a good choice, even without robust evidence yet. Therefore, it is necessary to explore ... We retrospectively analyzed the short-term outcomes regarding intraoperative unplanned events, postoperative complications, and lymphadenectomy in 61 patients who underwent prone position thoracoscopi... Of these sixty-one patients, there were 10, 24 and 27 cases of tumor in the upper, middle, and lower thoracic, respectively. Although there were five cases of unplanned events during surgery, no conve... The prone position thoracoscopic-assisted TME is a safe procedure that is more conducive to thoracic lymph node dissection, especially for middle and lower mediastinum....

Humans Prone Position Retrospective Studies Esophageal Neoplasms Lymph Node Excision +4 autres

Efficacy of octreotide to reduce lymphorrhea and prevent lymphocele after pelvic lymph node excision in gynecological malignancies.

Aug 2023

DOI: 10.1111/jog.15702 PMID: 37254619

To study the efficacy of octreotide to reduce lymphorrhea and prevent lymphocele after pelvic lymph node excision in gynecological malignancies.... Patients with more than 200 mL of lymph drained per day until postoperative day 3 after pelvic lymph node excision were enrolled. Of the 75 patients, 36 were managed by conservative methods without th... The total and mean daily amount of lymph produced per patient was significantly lower in the octreotide-treated group than in the untreated group. The duration of drain placement was shorter in the oc... The injection of octreotide is effective to reduce lymphorrhea and prevent lymphocele after pelvic lymph node excision in gynecological malignancies....

Female Humans Lymphocele Octreotide Genital Neoplasms, Female +2 autres

Subcostal lymph nodes: An unusual sentinel lymph node basin in cutaneous melanoma.

Dec 2022

DOI: 10.1002/jso.27022 PMID: 35870116

Lymphatic drainage from subcostal nodes, along the costal groove, have not previously been characterized as sites for melanoma drainage and metastasis. This study reports a series of patients with sub... Patients who presented to our institution between 2005 and 2020 with documented cutaneous melanoma and sentinel lymph node biopsy of a subcostal node (sentinel = S), or metastases to subcostal nodes l... Six patients had subcostal sentinel nodes (SNs). Primary sites included the posterior trunk and lateral chest wall. Subcostal nodes were found under ribs 10-12. Subcostal SNs had at least one dimensio... Melanoma can metastasize to subcostal lymph nodes and be found at the time of SN biopsy or identified at recurrence. These small nodes are fed by lymphatic channels that run in the neurovascular bundl...

Humans Melanoma Skin Neoplasms Sentinel Lymph Node Lymphatic Metastasis +5 autres

Lymph Node Positivity of Axillary Reverse Mapping Lymph Nodes at the Time of Axillary Lymph Node Dissection: Two-Site Prospective Trial.

Oct 2023

DOI: 10.1245/s10434-023-13883-9 PMID: 37466868

Axillary reverse mapping (ARM) was introduced in 2007 to identify and selectively preserve upper-extremity lymphatics during axillary lymph node surgery to decrease the risk of lymphedema. The patient... Patients undergoing ALND with or without immediate lymphatic reconstruction (ILR) were enrolled in a prospective trial at two institutional sites between April 2018 and Decemeber 2022. This report ana... The inclusion criteria were met by 139 patients, who made up the study population (133 with breast cancer and 6 with other disease). Of the breast cancer patients, 99.2% were female, 35.3% (47/133) we... In the contemporary patient population undergoing ALND, the positivity rate of the ARM LN was relatively high, suggesting that leaving ARM LNs in patients undergoing ALND may not be oncologically safe...

Female Humans Male Axilla Breast Neoplasms +5 autres

Sentinel Lymph Node Identification in Post Neoadjuvant Chemotherapy Breast Cancer Patients Undergoing Surgical Excision Using Lymphosonography.

Jul 2023

DOI: 10.1002/jum.16164 PMID: 36591785

This study evaluated the efficacy of lymphosonography in the identification of sentinel lymph nodes (SLNs) in post neoadjuvant chemotherapy patients with breast cancer scheduled to undergo surgical ex... Seventy-nine subjects scheduled for breast cancer surgery with SLN excision completed this IRB-approved study, out of which 18 (23%) underwent neoadjuvant chemotherapy before surgery. Subjects underwe... Seventy-two SLNs were surgically excised from 18 subjects, 29 were positive for blue dye, 63 were positive for radioactive tracer and 57 were positive for Sonazoid. Comparison with blue dye showed tha... Lymphosonography achieved similar accuracy as radioactive tracer and higher accuracy than blue dye for identifying SLNs. The 15 SLNs positive for malignancy were all identified by lymphosonography....

Humans Female Sentinel Lymph Node Breast Neoplasms Sentinel Lymph Node Biopsy +6 autres

Prediction of nonsentinel lymph node metastasis in acral melanoma with positive sentinel lymph nodes.

Dec 2023

DOI: 10.1002/jso.27438 PMID: 37689989

Metastasis in a nonsentinel lymph node (non-SLN) is an unfavorable independent prognostic factor in cutaneous melanoma (CM). Recent data did suggest potential value of completion lymph node dissection... This retrospective study enrolled 656 cases of melanoma who underwent sentinel lymph node biopsy at Fudan University Shanghai Cancer Center from 2009 to 2017. We identified 81 SLN + AM patients who un... Ulceration, Clark level, number of deposits in the SLN (NumDep) and maximum size of deposits (MaxSize) are independent risk factors associated with non-SLN metastases. We developed a scoring system th... A scoring system that included ulceration, Clark level, MaxSize, and NumDep is reliable and effective for predicting non-SLN metastasis in SLN-positive AM....

Humans Melanoma Skin Neoplasms Lymphatic Metastasis Sentinel Lymph Node +7 autres

Prognostic Value of Lymph Node Yield, Lymph Node Density, and pN in Oral Cancer.

08 2023

DOI: 10.1177/01945998221123927 PMID: 36066971

To investigate thresholds for lymph node yield (LNY), lymph node density (LND), and pN in patients with oral squamous cell carcinoma in relation to previous findings in the literature.... Retrospective register-based study.... Copenhagen Oral Cavity Squamous Cell Carcinoma database.... Appropriate thresholds for LNY, LND, and pN were determined by areas under the curve and subsequently subjected to multivariate analysis. Five-year overall survival and 3-year recurrence-free survival... In total, 413 patients diagnosed with oral squamous cell carcinoma were included. In the pN0 cohort, no superior/prognostic LNY cutoff values were detected. In the pN+ cohort, areas under the curve de... Increased nodal yield, decreased LND, and decreasing number of pN were associated with significantly improved survival outcomes. LNY might serve as a prognosticator of survival as well as a surgical q...

Humans Prognosis Carcinoma, Squamous Cell Retrospective Studies Mouth Neoplasms +5 autres

Effect of inguinal lymph node dissection in lymph node negative patients with squamous cell carcinoma of the penis.

Jan 2023

DOI: 10.1007/s00345-022-04184-z PMID: 36239810

The survival benefit of inguinal lymph node dissection (ILND) vs no ILND in patients with squamous cell carcinoma of the penis (SCCP) and the absence of lymph node invasion is unclear. We addressed th... We identified lymph node negative SCCP patients who either underwent ILND (pN0) or clinical examination only (cN0). We tested for the effect of ILND vs no ILND on cancer-specific mortality (CSM) in Ka... Of 2520 SCCP patients, 369 (15%) underwent ILND (pN0) vs 2151 (85%) did not (cN0). The pN0 vs cN0 distribution according to pT stages was as follows: 80 (7%) vs 1092 (93%) in pT1b, and 289 (21%) vs 10... In pT2-3 stage SCCP, a significantly lower CSM was recorded in lymph node negative patients treated with ILND than in their clinical lymph node negative counterparts who did not undergo ILND....

Male Humans Lymph Node Excision Lymph Nodes Proportional Hazards Models +3 autres

Predictive Value of Jugulo-omohyoid Lymph Nodes in Lateral Lymph Node Metastasis of Papillary Thyroid Cancer.

21 May 2024

DOI: 10.1186/s12902-024-01576-7 PMID: 38773428

Jugulo-omohyoid lymph nodes (JOHLN) metastasis has proven to be associated with lateral lymph node metastasis (LLNM). This study aimed to reveal the clinical features and evaluate the predictive value... A total of 550 patients pathologically diagnosed with PTC between October 2015 and January 2020, all of whom underwent thyroidectomy and lateral lymph node dissection, were included in this study.... Thyroiditis, tumor location, tumor size, extra-thyroidal extension, extra-nodal extension, central lymph node metastasis (CLNM), and LLMM were associated with JOHLN. Male, upper lobe tumor, multifocal... JOLHN metastasis could be a clinically sensitive predictor of further LLM. A high-performance nomogram was established, which can provide an individual risk assessment of LNM and guide treatment decis...

Humans Male Lymphatic Metastasis Female Thyroid Cancer, Papillary +12 autres

Cortex visuel : Questions médicales fréquentes

Termes MeSH sélectionnés :

Questions fréquentes et termes MeSH associés

Diagnostic 5

Symptômes 5

Prévention 5

Traitements 5

Complications 5

Facteurs de risque 5

Contenu validé par Dr Olivier Menir

Sous-catégories

Cortex visuel primaire

Auteurs principaux

Sources (7946 au total)