Oncoplastic surgery is to treat breast tumors with the help of plastic surgery. Efficiency of breast-conserving treatments (BCT) compared to mastectomies is equivalent. BCT is better accepted but can cause breast deformity, thus further operations. Oncoplastic surgery aims at conserving an acceptable shape to the breast. It ranges from simple remodeling to more complex techniques modifying the width of the breast. According to the quadrant to treat (inner upper, outer upper, inner lower, outer lower, union of quadrants, tumors of the nipple-areola complex, tumors of the inframammary fold), according to the proximity of the tumor to the nipple, and to the size of the breast and tumor, various techniques are displayed. Few touch ups are necessary. Symmetry is managed during the initial operation or after.