RT Book, Section A1 Meric-Bernstam, Funda A2 Kuerer, Henry M. SR Print(0) ID 6416942 T1 Chapter 85. Neoadjuvant Chemotherapy T2 Kuerer's Breast Surgical Oncology YR 2010 FD 2010 PB The McGraw-Hill Companies PP New York, NY SN 978-0-07-160178-8 LK accesssurgery.mhmedical.com/content.aspx?aid=6416942 RD 2024/04/25 AB Neoadjuvant (or preoperative) chemotherapy is being increasingly used for the treatment of breast cancer. Response to neoadjuvant chemotherapy may convert an inoperable breast cancer to an operable tumor. By downsizing the tumor, neoadjuvant chemotherapy also increases the possibility of breast-conserving surgery in a larger number of patients1,2 (Fig. 85-1A). In addition, in patients who have operable breast cancer at the onset, the delivery of neoadjuvant chemotherapy allows for excisions of smaller volumes of breast tissue. Indeed, this was shown in a study by Boughey et al3 in which patients treated with neoadjuvant therapy were compared with patients who underwent adjuvant chemotherapy. For patients who had an initial tumor size greater than 2 cm, neoadjuvant chemotherapy was found to allow for significantly smaller volumes of breast tissue to be excised (113 cm3 vs 213 cm3, p = 0.004). In this study, the delivery of neoadjuvant chemotherapy did not alter the reexcision rate or the number of operations performed in the 2 groups.