What does a sentinel node biopsy entail?

• A. Removing all axillary lymph nodes
• B. Only removing the sentinel lymph node
• C. Biopsying the breast tissue
• D. Excisional biopsy of local lymph nodes

Answer: (B)

A sentinel node biopsy specifically involves the removal and examination of only the sentinel lymph node, which is the first lymph node to which cancer cells are most likely to spread from a primary tumor. This procedure is crucial in the staging of cancer, particularly breast cancer, as it helps determine whether the cancer has metastasized to the lymphatic system without the need for a more extensive lymph node dissection.

By focusing on just the sentinel lymph node, this technique minimizes patient morbidity compared to procedures that involve removing all axillary lymph nodes or performing excisional biopsies of multiple lymph nodes. It allows healthcare providers to assess the presence of cancer cells in the lymphatic system while preserving more healthy tissue and reducing potential complications. This method is aimed at providing an accurate diagnosis and guide treatment decisions based on the cancer's spread.