What do systematic reviews say?

SLNB vs observation

SLNB may leads to lower disease‐free Survival First pathologically confirmed recurrence compared with observation (low certainty).

• Sentinel lymph node biopsy followed by lymph node dissection for localised primary cutaneous melanoma 2015 · Cochrane Headline outcomes only
  HR 0.75 [0.63, 0.89]
  1 study · 1661 participants
  Low