Sentinel lymph node biopsy in breast cancer aims to determine what?

Sentinel lymph node biopsy in breast cancer aims to determine what?

• A. Primary tumor receptor status
• B. Axillary lymph node status
• C. Distant metastases
• D. Tumor size

Answer: (B)

The goal of sentinel lymph node biopsy in breast cancer is to determine axillary lymph node status. By tracing the breast’s drainage with a tracer or dye and removing the first draining (sentinel) node, we learn whether cancer has begun to spread to the axillary nodes. If the sentinel node is cancer-free, the likelihood of other axillary nodes being involved is low, and a full axillary dissection can often be avoided, reducing risks like lymphedema and nerve injury. If cancer is present in the sentinel node, it indicates axillary metastasis and guides further treatment, such as completing axillary dissection or tailoring systemic therapy based on nodal burden. This testing informs staging and subsequent management, while receptor status, distant metastases, and tumor size are determined by other evaluations.

The goal of sentinel lymph node biopsy in breast cancer is to determine axillary lymph node status. By tracing the breast’s drainage with a tracer or dye and removing the first draining (sentinel) node, we learn whether cancer has begun to spread to the axillary nodes. If the sentinel node is cancer-free, the likelihood of other axillary nodes being involved is low, and a full axillary dissection can often be avoided, reducing risks like lymphedema and nerve injury. If cancer is present in the sentinel node, it indicates axillary metastasis and guides further treatment, such as completing axillary dissection or tailoring systemic therapy based on nodal burden. This testing informs staging and subsequent management, while receptor status, distant metastases, and tumor size are determined by other evaluations.