Breast-conserving surgery (BCS) has been increasingly performed as a standard operative strategy for patients with breast cancer. The primary purpose of BCS is to acquire both local control and good cosmetic results. An insignifi cant difference in cancer treatment results has been shown between BCS and total mastectomy. However, achieving suffi ciently cosmetic results can be diffi cult, particularly in patients with tumors that are large or localized to the lower quadrant. To avoid breast deformities and asymmetries after BCS, immediate reconstruction using autologous tissue has been accepted as the standard option. Rhomboid skin and adipose fl ap repair is a simple, less invasive procedure than the myocutaneous fl ap, which has primarily been performed in patients with upper quadrant lesions. We herein report the cases of two patients with lower quadrant breast cancer with skin invasion, who underwent BCS with immediate breast repair using a rhomboid fl ap. This procedure is therefore worth considering as one of the fi rst options for immediate repair after BCS.