A sentinel node is the first to receive lymph fluid that drains from tissue surrounding a tumor. The new procedure involves injecting a radioactive dye near the tumor site. The dye flows into the sentinel-nodes so that doctors can trace where cancer cells have most likely spread. Once those nodes are identified and removed, they are immediately examined. For patients whose sentinel nodes are cancerous, doctors can proceed with complete node dissection in the same operation.
Every case is different.
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