Fluorescent Dyes for Lymph Node Mapping

The goal of this clinical research study is to find lymph nodes before surgery using a dye called indocyanine green (IC-Green). Objectives: 1. To determine the feasibility of using nonradioactive optical imaging techniques with indocyanine green (ICG) as a fluorescent contrast agent to identify all axillary lymph nodes. 2. To determine the feasibility of using nonradioactive optical imaging techniques with ICG as a fluorescent contrast agent to characterize lymphatic architecture and function in women with breast cancer who are scheduled for axillary node dissection.