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Sentinel lymph node biopsy in head and neck squamous cell carcinoma
Karen T Pitman1, Jonas T Johnson, Manuel L Brown
1Department of Otolaryngology, University of Mississipi Medical Center, Jackson 39216-4508, USA. Kpitman@ent.umsmed.edu
The Laryngoscope
|December 4, 2002
Summary
Sentinel lymph node biopsy is a feasible and accurate method for staging head and neck squamous cell carcinoma (HNSCC). This minimally invasive technique helps determine regional lymphatic involvement in N0 HNSCC patients.
Area of Science:
- Head and Neck Surgery
- Oncology
- Surgical Pathology
Background:
- Sentinel lymph node biopsy (SLNB) has transformed melanoma management.
- Surgeons are exploring SLNB for head and neck squamous cell carcinoma (HNSCC).
Purpose of the Study:
- To assess the feasibility and accuracy of SLNB for staging HNSCC regional lymphatics.
- To identify differences in mucosal versus cutaneous lymphatic drainage affecting SLNB technique.
Main Methods:
- A prospective feline model study evaluated technetium-labeled sulfa colloid (Tc-SC) and isosulfan blue dye kinetics in mucosal lymphatics.
- A retrospective review of 33 HNSCC patients included lymphoscintigraphy and intraoperative sentinel lymph node identification.
Main Results:
- In felines, Tc-SC and dye reached sentinel nodes within 5 minutes; injection techniques required modification for base-of-tongue tumors.
- In 20 N0 HNSCC patients, SLNB accuracy was 95% (19/20), identifying an average of 2.9 nodes.
- SLNB correctly predicted nodal status; lymphoscintigraphy identified drainage patterns in patients with prior neck dissection.
Conclusions:
- SLNB is a technically feasible and promising minimally invasive staging method for N0 HNSCC.
- Lymphoscintigraphy can guide treatment levels in patients with altered lymphatic drainage due to prior surgery.