ELectrosurgical Bipolar Devices VS Conventional Electro-cauterization in Breast Surgery

Inclusion Criteria: * 20 years old and over * Patients planned to undergo total mastectomy and axillary lymph node dissection * Patients planned to undergo total mastectomy and sentinel lymph node biopsy and/or reconstruction * Patients planned to undergo partial mastectomy and axillary lymph node dissection Exclusion Criteria: * Bilateral breast cancer patients * Male breast cancer patients * Patients who underwent ipsilateral axillar surgery or axillar radiation therapy * Recurrent breast cancer patients * Patients who cannot give informed consents such as non-Korean speakers and patients with intellectual disabilities * Vulnerable patients such as pregnant women for enrollment * Patients without drain catheter * Patients with Ductal carcinoma in situ who have not undergone ipsilateral sentinel lymph node biopsy or axillar lymph node dissection