Skin Biopsy Interpretation · Pathology

Which biopsy feature is most suggestive of malignant melanoma?

  1. Uniform melanocytes confined to basal layer
  2. Atypical melanocytes with pagetoid spread
  3. Hyperkeratosis without atypia
  4. Subepidermal blistering
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Correct answer: Atypical melanocytes with pagetoid spread

Malignant melanoma often shows atypical melanocytes spreading upward through the epidermis (pagetoid spread). Cellular atypia and mitotic figures are common.

Difficulty: Medium Question 8 of 20

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