Prospective Pilot Study of Robot-assisted Nipple Sparing Mastectomy (RNSM)

Inclusion Criteria: * Surgical candidates, per standard of care for: * Nipple sparing resection and reconstruction OR * Prophylactic mastectomy for risk reduction mastectomy OR * Treatment of ductal carcinoma in-situ or clinically node negative cT1-T3 breast cancer * Surgical candidates for open NSM, per standard of care, with regards to patient anatomic factors and tumor location * Patient has an Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 Exclusion Criteria: * Pregnant or nursing women * Patients with: * Inflammatory breast cancer * Skin involvement with tumor * Pre-operative diagnosis (radiological or pathologic) of nipple-areola complex involvement with tumor * Grade 3 ptosis of nipple * Smokers with heavy current use of nicotine (defined as \> 20 cigarettes/day) * Patients that are high risk for anesthesia, as documented in medical record * Patients that do not have the ability to give informed consent * Prisoner status at surgical clinic visit * Bra cup size greater than C cup * Previous thoracic radiation history (for any reason)