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Information

  1. Superficial spreading melanoma: Most common; begins with initial radial growth phase before invasion.
  2. Lentigo maligna melanoma: Very long radial growth phase before invasion, lentigo maligna (Hutchinson's melanotic freckle) is precursor lesion, most common in elderly and in sun-exposed areas (esp. face).
  3. Acral lentiginous: Most common form in darkly pigmented pts; occurs on palms and soles, mucosal surfaces, in nail beds and mucocutaneous junctions; similar to lentigo maligna melanoma but with more aggressive biologic behavior.
  4. Nodular: Generally poor prognosis because of invasive growth from onset.

Outline

Section 6. Hematology and Oncology