the diffusion of SLNB for treatment of early-stage breast cancer among women aged 65
years and older diagnosed between 2000 and 2002, shortly after Medicare approved and
began reimbursing for the procedure. Results: In this population, patients treated at an
organization affiliated with a research network—-the American College of Surgeons
Oncology Group (ACOSOG) or other National Cancer Institute (NCI) cooperative groups …