[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100637051":3},{"organization":4,"armGroups":7,"interventions":7,"overallOfficials":7,"centralContacts":8,"locations":7,"responsibleParty":14,"collaborators":17,"id":25,"slug":26,"hasResults":27,"nctId":28,"briefTitle":29,"officialTitle":30,"acronym":7,"eligibilityCriteria":31,"healthyVolunteers":27,"sex":32,"minAge":33,"maxAge":34,"enrollmentInfo":35,"targetDuration":38,"studyType":39,"phases":7,"briefSummary":40,"conditions":41,"keywords":7,"overallStatus":44,"whyStopped":7,"lastUpdateSubmitDate":45,"lastUpdatePostDateStruct":46,"startDateStruct":49,"completionDateStruct":51,"leadSponsor":53,"locationsCount":7},{"fullName":5,"class":6},"The First Hospital of Jilin University","OTHER",null,[9],{"name":10,"role":11,"phone":12,"phoneExt":7,"email":13},"Dezhi Zhang","CONTACT","18186876068","dezhi@jlu.edu.cn",{"type":15,"investigatorFullName":10,"investigatorTitle":16,"investigatorAffiliation":5,"oldNameTitle":7,"oldOrganization":7},"PRINCIPAL_INVESTIGATOR","Principal Investigator (PI)",[18,20,23],{"name":19,"class":6},"Siping Central People's Hospital",{"name":21,"class":22},"Baicheng Central Hospital","UNKNOWN",{"name":24,"class":22},"Jilin Central General Hospital","100637051","ultrasound-guided-core-needle-biopsy-to-assess-sensitivity-and-specificity-of-axillary-lymph-node-metastasis-in-breast-cancer-100637051",false,"NCT07573657","Ultrasound-Guided Core Needle Biopsy to Assess Sensitivity and Specificity of Axillary Lymph Node Metastasis in Breast Cancer","Sensitivity and Specificity of Ultrasound-Guided Core Needle Biopsy in Evaluating Axillary Lymph Node Metastasis in Breast Cancer","Inclusion Criteria:\n\n1. Age ≥18 years and \\\u003C70 years;\n2. Histologically confirmed primary breast cancer;\n3. Underwent ultrasound examination to assess axillary lymph node metastasis status.\n\nExclusion Criteria:\n\n1. Presence of other malignancies (e.g., lymphoma, lung cancer, thyroid cancer, etc., with axillary metastasis);\n2. Pregnant or lactating women;\n3. Previous receipt of neoadjuvant radiotherapy or chemotherapy;\n4. Lymph node metastasis status not confirmed by pathology, or time interval between ultrasound examination and pathological confirmation exceeding 6 weeks.","FEMALE","18 Years","70 Years",{"count":36,"type":37},200,"ESTIMATED","10 Days","OBSERVATIONAL","This study plans to find the most suitable lymph node cortex thickness and abnormal lymph node features to define suspicious lymph nodes. Then, ultrasound-guided core needle biopsy of axillary lymph nodes will be done, aiming to provide some guidance for the biopsy.",[42,43],"Lymphatic Metastasis","Breast Neoplasms","NOT_YET_RECRUITING","2026-05-01",{"date":47,"type":48},"2026-05-07","ACTUAL",{"date":50,"type":37},"2026-10-01",{"date":52,"type":37},"2028-10-01",{"name":5,"class":6}]