This document discusses oncoplastic surgery level 2 techniques. Level 2 techniques involve the resection of 20-50% of breast volume and require skin excision and mammoplasty techniques for reshaping. It presents a classification system for level 2 oncoplastic surgery techniques based on the quadrant of the breast involved, and provides examples of specific techniques for each quadrant, such as the batwing technique for the upper inner quadrant and the racquet technique for the upper outer quadrant. The goal of these techniques is to increase breast conservation rates by redistributing volume loss through therapeutic mammoplasty procedures.