SentiMag® and Sienna+® system for sentinel lymph node biopsy in breast cancer
The SentiMag® and Sienna+® system is intended to be used in breast cancer surgery to help a surgeon to identify the lymph nodes most likely to be affected if the cancer has spread. It consists of a hand-held probe, which detects magnetism, the SentiMag®, and a magnetic tracer, Sienna+®. The lymph nodes it identifies can be removed and examined to help assess the stage of the disease and how best to treat it. Sienna+® is injected into the affected breast then flows through the lymphatic system and becomes trapped in nearby lymph nodes. During surgery the SentiMag® probe is used to find these nodes. The system may offer an alternative to using a radioactive tracer to help find the nodes, which is the current practice. More research is needed before it is known how this new system compares to this current technique for identifying the nodes.