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Sentinel Lymph Node Risk (Melanoma)
mm
years
Clinical Context & Background
Sentinel Lymph Node Biopsy (SLNB) is an important staging procedure for melanoma. This calculator estimates the probability of finding a positive sentinel node based on tumor thickness (Breslow depth), age, and ulceration, aligning with NCCN guidelines for T1a/T1b/T2 decision making.
Formula Logic
Risk stratified by T-stage (Thickness/Ulceration) and Age.Reference Data
| Risk Probability | NCCN Guideline Recommendation |
|---|---|
| < 5% | SLNB generally NOT recommended (T1a). |
| 5% - 10% | Consider SLNB (T1b). Discuss with patient. |
| > 10% | SLNB Recommended (T2 or greater). |
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