Clinical Research Directory

Inclusion Criteria: * Women aged 20-80 * Candidates for breast-conserving surgery and axillary sentinel lymph node biopsy * BMI over 25 or those who have received preoperative chemotherapy * Overall performance status of Eastern Cooperative Oncology Group (ECOG) 0-2 * Participants who understand the study contents and can provide written consent * Participants without evidence of distant metastasis Exclusion Criteria: * Those with suspected axillary lymph node enlargement or metastasis on preoperative imaging (breast MRI, chest CT, breast ultrasound) * Among patients who had confirmed lymph node metastasis before neoadjuvant chemotherapy, whose preopreative image showed residual disease at axillary lymph node * Those planning for mastectomy * Those planning for axillary lymph node dissection without SLNBx * Male breast cancer patients * Patients with bilateral breast cancer * Illiterate individuals, foreigners, or others who cannot read or understand the consent form * Individuals who voluntarily decide not to participate in the study or do not sign the consent form * Those judged by the researcher to be inappropriate for participation in this study * Study participants who did not have a drain inserted in the surgical area * If the randomized device is not used due to surgical room conditions (e.g., unavailability due to other emergency surgeries, device malfunction) and another device is substituted