Clinical Research Directory

Inclusion Criteria: * Female patient who underwent mastectomy for invasive breast cancer * Patients who have undergone breast reconstruction after mastectomy or who have inserted a tissue expander * (y)p patients with stage IIIA or lower (excluding T4 and N3 patients) who need adjuvant radiation therapy * Eastern Cooperative Oncology Group Performance ≤ 2 * Age ≥ 19 years * Patients who agreed to participate in the study Exclusion Criteria: * Patients who already had implants at the time of diagnosis of breast cancer or who have already undergone reconstructive surgery * Patients who underwent reconstruction after partial resection or breast conserving surgery rather than mastectomy * Patients who are using or planning to use an air expander * Patients receiving radiation therapy for salvage or palliative purposes * Patients with distant metastases at the time of diagnosis * Patients who are scheduled to undergo concurrent chemoradiation therapy * Patients with bilateral breast cancer * Male breast cancer patients * Patients who have previously received radiation therapy for the ipsilateral breast or supraclavicular area * Patients with history of cancers other than thyroid cancer, intraepithelial cancer of the cervix, or skin cancer * Patients diagnosed with ductal breast carcinoma in situ, lobular carcinoma in situ, phyllodes, metaplastic cancer, or other benign tumors based on histological diagnosis