Application of the Lalonde (Horizontal-Only Scar) Technique Reduction Mammoplasty in Oncoplastic Breast-Conserving Surgery for Asian Patients: A Case Report

Abstract Oncoplastic breast-conserving surgery combines oncological resection with plastic surgery techniques, including reduction mammoplasty, to achieve effective cancer control and superior cosmetic outcomes. Traditional approaches, such as vertical scar mammoplasty and inverted-T mammoplasty, have enabled extensive tumor resection but are often associated with the drawback of vertical scars. The Lalonde technique has been reported in Western patients to allow extensive partial mastectomy without leaving vertical scars. Here, we present the case of a 60-year-old Asian woman with macromastia and breast cancer who underwent reduction mammoplasty using the Lalonde technique. The postoperative outcomes revealed complete tumor resection alongside excellent cosmetic results. This case highlights the potential and possibilities of applying the Lalonde technique to Asian patients with ptotic breasts, and offers a promising and aesthetically superior option as one of the new oncoplastic surgery techniques.