NCIt definition : A synthetic visual lymphatic imaging agent. Injected into the periphery of the tumor
site, isosulfan blue localizes to the lymphatic system and aids in the surgical identification
of tumor sentinel nodes which stain blue. (NCI04);
Alternative definition : NCI-GLOSS: A dye made in the laboratory that helps identify the sentinel lymph node
(the first lymph node that cancer spreads to from a primary tumor). Isosulfan blue
is injected at the edge of a tumor and travels through the lymph fluid to lymph nodes
near the tumor. The sentinel lymph node is identified by removing lymph nodes that
are stained with the blue dye and looking for cancer cells under a microscope.;