This report presents the results of oncoplastic surgery in three Japanese patients with breast cancer lesions involving the lower pole of the breast. Their breasts were ptotic, and their lesions were considered to be suitable for breast conservation surgery. There were treated with partial mastectomy resection using vertical-scar mammaplasty, with reduction surgery and recentralization of the nipple-areola complex. Two patients underwent a mirror-image biopsy on the contralateral breasts to determine the symmetry. The remaining patient had periareolar incision mastopexy without reduction added for the contralateral breast. A large surgical margin was used to remove excessive skin and parenchymal tissue. Ideal symmetry was achieved by performing reduction and/or mastopexy on the contralateral breast.