This study aims to evaluate the predictive value of preoperative indocyanine green (ICG) lymphography and high-frequency ultrasound in determining the outcomes of lymphaticovenous anastomosis (LVA) in patients with post-mastectomy upper limb lymphedema. Patients undergoing LVA surgery will undergo preoperative assessment using ICG lymphography and ultrasound mapping of lymphatic vessels and recipient veins. Surgical outcomes will be assessed clinically and functionally through limb circumference measurements, symptom improvement, and postoperative imaging findings. The study seeks to identify imaging predictors associated with successful LVA outcomes and improved postoperative recovery.