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Related Experiment Videos

Lymphatic Mapping and Sentinel Lymph Node Biopsy.

Siddharth S. Bass1, Gary H. Lyman, Christa R. McCann

  • 1H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida.

The Breast Journal
|May 12, 2001
PubMed
Summary
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Sentinel lymph node (SLN) biopsy is a promising technique for breast cancer staging. This method accurately identifies metastatic axillary nodes, potentially improving patient outcomes and surgical care.

Area of Science:

  • Oncology
  • Surgical Oncology
  • Pathology

Background:

  • The status of regional lymph nodes is critical for breast cancer prognosis.
  • Complete axillary lymph node dissection (CLND) is the standard surgical approach for invasive breast cancer.
  • Emerging techniques like lymphatic mapping and sentinel lymph node (SLN) biopsy are challenging the traditional paradigm.

Purpose of the Study:

  • To report the institutional experience with lymphatic mapping and SLN biopsy at H. Lee Moffitt Cancer Center.
  • To evaluate the feasibility and accuracy of SLN biopsy in breast cancer staging.

Main Methods:

  • A prospective study of 1,147 consecutive breast cancer patients from April 1994 to January 1999.
  • Lymphatic mapping utilized Tc99m-labeled sulfur colloid and isosulfan blue dye.

Related Experiment Videos

  • SLN identification criteria included blue or "hot" nodes with specific radioactivity counts.

    • Main Results:

    • Successful SLN identification in 95.7% (1,098/1,147) of cases.
    • A low false-negative rate of 0.83% was observed in the initial 186 patients who underwent CLND post-SLN biopsy.
    • Tumor size was directly correlated with the likelihood of axillary lymph node metastasis.

    Conclusions:

    • Lymphatic mapping and SLN biopsy are effective in identifying the highest-risk axillary nodes for metastasis.
    • This technique offers a more focused pathological examination, potentially improving diagnostic accuracy.
    • SLN biopsy is a valuable tool that can be readily implemented in breast cancer surgical treatment with adequate training.