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Sentinel node biopsy is a less invasive procedure and carries a lower risk of complications than axillary node dissection. The sentinel node is the first lymph node that filters fluid from the breast. Many cancer experts believe that malignant cells reach the sentinel node first and that this lymph node is more likely to contain cancer cells.

Based on this assumption, the node most likely to contain malignant cells should be removed and analyzed. If the sentinel is free of cancer cells, the...Read the full article