RT Book, Section A1 Solin, Lawrence J. A2 Kuerer, Henry M. SR Print(0) ID 6413496 T1 Chapter 49. The Eastern Cooperative Oncology Group (ECOG) Experience 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=6413496 RD 2024/04/24 AB The Eastern Cooperative Oncology Group (ECOG) has contributed a number of important research findings to the literature that are worthy of study by surgical oncologists. Large randomized trials have been performed by ECOG in conjunction with other cooperative groups, and pilot studies have been conducted within the confines of ECOG member institutions. Although many of the ECOG studies have focused on systemic treatment, a number of studies have generated information that is directly related to and of great significance for the local regional management of breast cancer. The current chapter reviews selected ECOG studies and discusses their implications for current surgical oncology practice.