U.S., April 16 -- ClinicalTrials.gov registry received information related to the study (NCT07532096) titled 'Extended Sentinel Lymph Node Biopsy With Methylene Blue Single Tracer Post-Neoadjuvant Therapy for Node-Positive Breast Cancer' on April 08.

Brief Summary: The goal of this clinical trial is to evaluate the safety and feasibility of methylene blue single tracer-based extensive sentinel lymph node biopsy (ESLNB) and provide evidence for simplifying surgical procedures on the basis of ensuring axillary safety, as well as clarify the incidence of postoperative upper limb lymphedema in female patients with axillary node-positive breast cancer who achieve clinical axillary node negativity after neoadjuvant therapy. The main questions it...