Technetium (99mTc) tilmanocept

Technetium (99mTc) tilmanocept, trade name Lymphoseek, is a radiopharmaceutical diagnostic imaging agent approved by the U.S. Food and Drug Administration (FDA) for the imaging of lymph nodes. It is used to locate those lymph nodes which may be draining from tumors, and assist doctors in locating those lymph nodes for removal during surgery.