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Related Experiment Videos

Interval sentinel lymph nodes in melanoma.

Kelly M McMasters1, Celia Chao, Sandra L Wong

  • 1Division of Surgical Oncology, Department of Surgery, James Graham Brown Cancer Center, University of Louisvill, 529 S Jackson St, Louisville, KY 40202, USA. kelly.mcmasters@nortonhealthcare.org

Archives of Surgery (Chicago, Ill. : 1960)
|May 2, 2002
PubMed
Summary

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Interval sentinel lymph nodes (SLNs) in melanoma patients show a metastasis risk similar to traditional SLNs. Positive interval SLNs are often the sole site of nodal metastasis, necessitating thorough lymphoscintigraphy and intraoperative searches.

Area of Science:

  • Oncology
  • Surgical Pathology

Background:

  • Sentinel lymph node biopsy (SLNB) is crucial for melanoma staging.
  • Identifying all sites of nodal metastasis is vital for accurate prognosis and treatment planning.

Purpose of the Study:

  • To evaluate the metastatic potential of interval sentinel lymph nodes (SLNs) in melanoma patients.
  • To determine if interval SLNs harbor metastatic disease at a similar rate to traditional nodal basins.

Main Methods:

  • Prospective, multicenter clinical trial involving 2000 patients with melanoma.
  • Preoperative lymphoscintigraphy guided the identification of all SLNs, including interval sites.
  • Interval nodal sites (epitrochlear, popliteal, subcutaneous/intramuscular) were assessed for metastases.

Main Results:

Related Experiment Videos

  • Interval SLNs were identified in 3.1% of patients.
  • Metastases were found in 21.0% of interval SLNs, comparable to traditional nodal basins (19.5%).
  • In 84.6% of positive interval SLN cases, it was the only site of nodal metastasis.

Conclusions:

  • Interval SLNs, though infrequently identified, have a significant risk of harboring melanoma metastases.
  • Positive interval SLNs are frequently the only site of nodal spread.
  • Detailed preoperative lymphoscintigraphy and meticulous intraoperative examination for interval nodes are recommended.