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Sentinel node metastasectomy in thin <or=1-mm melanoma
Ilkka Koskivuo1, Erkki Suominen, Juha Niinikoski
1Department of Surgery, Turku University Hospital, P.O. Box 52, 20521, Turku, Finland. ilkka.koskivuo@tyks.fi
Langenbeck'S Archives of Surgery
|July 30, 2005
Summary
Sentinel lymph node biopsy (SLNB) accurately detects hidden nodal metastases in thin melanomas. This precise staging method is crucial for early-stage melanoma patients, even with low metastasis risk.
Area of Science:
- Oncology
- Dermatology
- Surgical Pathology
Background:
- Sentinel lymph node biopsy (SLNB) is standard for melanoma staging.
- SLNB indication in thin T1 melanomas (<1 mm) is debated due to low metastasis risk.
Purpose of the Study:
- To evaluate SLNB's effectiveness in detecting occult nodal metastases in thin melanomas.
Main Methods:
- Prospective SLNB performed on 135 melanoma patients.
- Study included 56 patients with thin T1 melanomas.
Main Results:
- SLNB identified nodal metastases in 18% of all patients.
- Three sentinel-positive thin melanomas (5% of T1 cases) were found.
- No primary tumor factors predicted these metastases.
Conclusions:
- SLNB precisely detects occult nodal metastases in thin invasive melanoma.
- Predictive histopathologic features for sentinel node status remain unidentified.
- Accurate staging is vital for T1 melanoma, with metastasectomy potentially curative for Stage III disease.