Smeele HP, et al. - Since oncoplastic breast conserving surgery (BCS) frequently induces asymmetry, researchers examined the factors involved in patient decision-making about contralateral reduction mammoplasty (CRM) in this qualitative interview study. From the prospective hospital database of patients who have had oncoplastic BCS for stage I-III breast cancer since 2010, 25 patients have been sampled using stratified purpose sampling on age, preoperative cup size, and time elapsed since adjuvant therapy was completed. Nine had been subjected to CRM. Patients were motivated to choose CRM by the following factors: perceivable asymmetry, satisfaction with the outcome of oncoplastic BCS, and the wish for breast reduction before cancer diagnosis. Following oncoplastic BCS, breast asymmetry is often tolerated due to concerns about surgery risks and recovery time and reluctance to have non-essential surgery to the healthy breast.