We have developed a breast-conserving surgery consisting of quadrantectomy and regional lymph node dissection and immediate volume replacement using lateral tissue flap (LTF). The quadrantectomy was employed on the basis of segmental anatomy of the duct-lobular system in which breast carcinoma originates. Lateral skin incision was performed from the apex of mid-axillary line to the inframammary fold, without removing the skin overlying the tumor. In the early period of breast reconstruction embraced latissmus dorsi flap (LDF) for 10 patients (reconstruction was not performed on 35 patients), but in the late period we employed LTF for 56 patients. Four of the 101 patients developed ipsilateral breast cancer during a mean follow-up period of 48 months, but none died of breast cancer. Among the 56 patients with LTF replacement no patient developed ipsilateral breast cancer. Fairly good cosmetic outcome was obtained in the patients who underwent the immediate volume replacement. Breast-conserving surgeries are reviewed, and the surgical procedure using LTF for immediate volume replacement is described.
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