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Oncoplastic breast-conserving surgery describes a set of techniques that allow for generous oncological resection with immediate tumor-specific reconstruction. These techniques are classically divided into either volume displacement (local breast flaps and or reduction mammaplasty/mastopexy strategies) versus volume replacement strategies (transfer of autologous nonbreast tissue from a local or distant site and, less commonly, implant placement). There have been few descriptions of merging these 2 classical approaches to facilitate breast-conserving surgery. The purpose of this report was to evaluate the efficacy of combining the most common oncoplastic volume displacement strategy (Wise pattern mammaplasty) with simultaneous autologous volume replacement from the lateral intercostal artery perforator (LICAP) flap to reconstruct the extensive partial mastectomy defect in patients with ptosis.A retrospective analysis of 25 consecutive patients with multifocal or multicentric breast cancers who underwent simultaneous volume replacement from the LICAP flap and volume displacement (Wise pattern mammaplasty) to achieve breast conservation was performed between January 2016 and January 2018. Clinical outcomes and postoperative complications were examined.Twenty-five consecutive patients with a mean age of 56 years (range, 37–74 years) and mean body mass index of 28 kg/m2 (range, 22–37 kg/m2) all successfully underwent breast conservation by simultaneously employing the LICAP flap and Wise pattern mammaplasty to reconstruct the partial mastectomy defect. The average resection specimen weight was 220 g (range, 130–310 g) and average size of the malignancy resected was 6.5 cm (range, 3.7–9.2 cm). Three patients (12%) required re-excision for close or positive margins but were ultimately cleared. There were no complications related to the donor site. There were 4 patients (16%) with delayed wound healing related to the Wise pattern closure but no instances of LICAP necrosis or failure.The merger of Wise pattern volume displacement and autologous volume replacement techniques represents a novel strategy that is useful in the most challenging breast conservation patients with some degree of ptosis.