Efficacy of Kinesio Taping Versus Compression Therapy on Breast Lymphedema Induced by Radiotherapy After Breast-Conserving Surgery

Inclusion Criteria: * Diagnosis of unilateral breast cancer confirmed according to the Chinese Anti-Cancer Association Breast Cancer Diagnosis and Treatment Guidelines and Standards (2024 edition). * Underwent breast-conserving surgery and completed breast radiotherapy for at least 2 months prior to enrollment; skin toxicity ≤ Grade 1 according to the Radiation Therapy Oncology Group (RTOG) acute radiation morbidity scoring criteria. * Age ≥ 18 years. * Ultrasound-diagnosed breast lymphedema in at least one quadrant of the affected breast exceeding the following thresholds: upper outer quadrant thickness ≥ 2.5 mm, upper inner quadrant ≥ 3.0 mm, lower outer quadrant ≥ 2.3 mm, lower inner quadrant ≥ 2.6 mm. * Presence of breast lymphedema symptoms (breast swelling, peau d'orange appearance, redness, positive Stemmer's sign) confirmed by clinical diagnosis. * Ability to understand and communicate effectively, capable of completing questionnaires. * Willing to provide written informed consent to participate in the study. Exclusion Criteria: * Cognitive impairment or communication dysfunction. * Severe psychological disorders or psychiatric illness. * Postoperative cancer recurrence or metastasis with serious complications. * Other causes of breast swelling unrelated to breast cancer. * Severe liver or kidney disease, cardiovascular disease, deep vein thrombosis, heart failure, lymphangitis, or current antibiotic treatment for cellulitis that would preclude participation. * Allergy to Kinesio Tape.