II. Epidemiology

  1. Typical onset in children

III. Pathophysiology

  1. Dermal Nevus whose brown pigment reflects blue light and absorbs other light wavelengths

IV. Signs

  1. Round, regular, slightly elevated blue appearing nevus with size <5mm
  2. Distribution
    1. Extremities
    2. Dorsal hands

V. Signs: Cellular Blue Nevus (variant)

  1. Uncommon variant that is 1 cm and typically located on the buttock

VI. Management

  1. Transformation into Melanoma is rare but can occur
  2. Lesions are dark and may be difficult to distinguish from Melanoma
  3. Biopsy suspicious lesions

VII. Reference

  1. Habif (2003) Clinical Dermatology, 4th ed.. Mosby, p. 773-813

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