A 55-year-old woman has a mole that has changed in color and size. Biopsy shows atypical melanocytes invading the dermis. Which feature best predicts prognosis?

Answer and explanation

Correct answer: B. Breslow depth

  1. Step 1: Tumor thickness is the strongest predictor. Answer: Breslow depth. Why not the others: Diameter and asymmetry are clinical warning signs, not prognostic measures.

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